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<a href="#func-members">函数</a> </div>
<div class="headertitle">
<div class="title">scrollw.c 文件参考</div> </div>
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<div class="contents">
<div class="textblock"><code>#include "<a class="el" href="a03629_source.html">precomp.h</a>"</code><br />
</div>
<p><a href="a00836_source.html">浏览源代码.</a></p>
<table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="func-members"></a>
函数</h2></td></tr>
<tr class="memitem:a7ecb77bf56d80ccba86e9cba46924271"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="a00836.html#a7ecb77bf56d80ccba86e9cba46924271">GetTrueClipRgn</a> (HDC hdc, HRGN hrgnClip)</td></tr>
<tr class="separator:a7ecb77bf56d80ccba86e9cba46924271"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a9c15f7cde7f639a841e61fa332a07992"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="a00836.html#a9c15f7cde7f639a841e61fa332a07992">InternalScrollDC</a> (HDC hdc, int dx, int dy, RECT *prcSrc, RECT *prcClip, HRGN <a class="el" href="a03266.html#a22582da0c3535d7a4fc98d7a7b03cc18">hrgnInvalid</a>, HRGN hrgnUpdate, LPRECT prcUpdate, BOOL fLogUnits)</td></tr>
<tr class="separator:a9c15f7cde7f639a841e61fa332a07992"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a9e4e39922fbfbba0375010e4863cd749"><td class="memItemLeft" align="right" valign="top">BOOL </td><td class="memItemRight" valign="bottom"><a class="el" href="a00836.html#a9e4e39922fbfbba0375010e4863cd749">_ScrollDC</a> (HDC hdc, int dx, int dy, LPRECT prcSrc, LPRECT prcClip, HRGN hrgnUpdate, LPRECT prcUpdate)</td></tr>
<tr class="separator:a9e4e39922fbfbba0375010e4863cd749"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a1cef636c724052493ab55c00c4ca21f3"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="a00836.html#a1cef636c724052493ab55c00c4ca21f3">xxxScrollWindowEx</a> (<a class="el" href="a00365.html#a1a2ef1c363aa0787a8f8a7dde2a34aaf">PWND</a> pwnd, int dx, int dy, RECT *prcScroll, RECT *prcClip, HRGN hrgnUpdate, LPRECT prcUpdate, <a class="el" href="a00563.html#a074685e97e89d6aa2accdfcb82328699">DWORD</a> flags)</td></tr>
<tr class="separator:a1cef636c724052493ab55c00c4ca21f3"><td class="memSeparator" colspan="2"> </td></tr>
</table>
<h2 class="groupheader">函数说明</h2>
<a id="a9e4e39922fbfbba0375010e4863cd749"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a9e4e39922fbfbba0375010e4863cd749">◆ </a></span>_ScrollDC()</h2>
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">BOOL _ScrollDC </td>
<td>(</td>
<td class="paramtype">HDC </td>
<td class="paramname"><em>hdc</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">int </td>
<td class="paramname"><em>dx</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">int </td>
<td class="paramname"><em>dy</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">LPRECT </td>
<td class="paramname"><em>prcSrc</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">LPRECT </td>
<td class="paramname"><em>prcClip</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">HRGN </td>
<td class="paramname"><em>hrgnUpdate</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">LPRECT </td>
<td class="paramname"><em>prcUpdate</em> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
</table>
</div><div class="memdoc">
<p class="definition">在文件 <a class="el" href="a00836_source.html">scrollw.c</a> 第 <a class="el" href="a00836_source.html#l00642">642</a> 行定义.</p>
<div class="fragment"><div class="line"><a name="l00650"></a><span class="lineno"> 650</span> {</div>
<div class="line"><a name="l00651"></a><span class="lineno"> 651</span>  RECT rcSrc;</div>
<div class="line"><a name="l00652"></a><span class="lineno"> 652</span>  RECT rcSpb;</div>
<div class="line"><a name="l00653"></a><span class="lineno"> 653</span>  <a class="code" href="a02581.html">PWND</a> pwnd;</div>
<div class="line"><a name="l00654"></a><span class="lineno"> 654</span>  HRGN <a class="code" href="a03257.html#a22582da0c3535d7a4fc98d7a7b03cc18">hrgnInvalid</a>;</div>
<div class="line"><a name="l00655"></a><span class="lineno"> 655</span>  BOOL fRet;</div>
<div class="line"><a name="l00656"></a><span class="lineno"> 656</span>  </div>
<div class="line"><a name="l00657"></a><span class="lineno"> 657</span>  <span class="comment">/*</span></div>
<div class="line"><a name="l00658"></a><span class="lineno"> 658</span> <span class="comment"> * ScrollDC does not scroll update region. Under WinNT, an app calling</span></div>
<div class="line"><a name="l00659"></a><span class="lineno"> 659</span> <span class="comment"> * GetUpdateRgn() then ScrollDC() then InvalidateRgn() will not get</span></div>
<div class="line"><a name="l00660"></a><span class="lineno"> 660</span> <span class="comment"> * any new update region that happened between the Get and Scroll. Under</span></div>
<div class="line"><a name="l00661"></a><span class="lineno"> 661</span> <span class="comment"> * Win3.1, that was not a problem because no other app ran during this</span></div>
<div class="line"><a name="l00662"></a><span class="lineno"> 662</span> <span class="comment"> * time. So pass hrgnInvalid - this will affect the hrgnUpdate and</span></div>
<div class="line"><a name="l00663"></a><span class="lineno"> 663</span> <span class="comment"> * prcUpdate values being returned from ScrollDC with the update region.</span></div>
<div class="line"><a name="l00664"></a><span class="lineno"> 664</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00665"></a><span class="lineno"> 665</span>  <a class="code" href="a03257.html#a22582da0c3535d7a4fc98d7a7b03cc18">hrgnInvalid</a> = NULL;</div>
<div class="line"><a name="l00666"></a><span class="lineno"> 666</span>  <span class="keywordflow">if</span> ((pwnd = <a class="code" href="a00644.html#a6abd9613dcf1227e044eb29b61b1b4ae">FastWindowFromDC</a>(hdc)) != NULL) {</div>
<div class="line"><a name="l00667"></a><span class="lineno"> 667</span>  </div>
<div class="line"><a name="l00668"></a><span class="lineno"> 668</span>  <a class="code" href="a03257.html#a22582da0c3535d7a4fc98d7a7b03cc18">hrgnInvalid</a> = pwnd-><a class="code" href="a02581.html#a79d8579e0cf1a8fb985bc709e08f61ac">hrgnUpdate</a>;</div>
<div class="line"><a name="l00669"></a><span class="lineno"> 669</span>  </div>
<div class="line"><a name="l00670"></a><span class="lineno"> 670</span>  <span class="keywordflow">if</span> (<a class="code" href="a03257.html#a22582da0c3535d7a4fc98d7a7b03cc18">hrgnInvalid</a> == MAXREGION) {</div>
<div class="line"><a name="l00671"></a><span class="lineno"> 671</span>  </div>
<div class="line"><a name="l00672"></a><span class="lineno"> 672</span>  <span class="comment">/*</span></div>
<div class="line"><a name="l00673"></a><span class="lineno"> 673</span> <span class="comment"> * This is a fix for winhell, a performance testing app</span></div>
<div class="line"><a name="l00674"></a><span class="lineno"> 674</span> <span class="comment"> * written by some guy working for a windows magazine.</span></div>
<div class="line"><a name="l00675"></a><span class="lineno"> 675</span> <span class="comment"> * this app scrolls it's window while it is completely</span></div>
<div class="line"><a name="l00676"></a><span class="lineno"> 676</span> <span class="comment"> * invalid. We normaly won't scroll invalid bits but</span></div>
<div class="line"><a name="l00677"></a><span class="lineno"> 677</span> <span class="comment"> * but we make the exception here</span></div>
<div class="line"><a name="l00678"></a><span class="lineno"> 678</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00679"></a><span class="lineno"> 679</span>  <a class="code" href="a03257.html#a22582da0c3535d7a4fc98d7a7b03cc18">hrgnInvalid</a> = NULL;</div>
<div class="line"><a name="l00680"></a><span class="lineno"> 680</span>  }</div>
<div class="line"><a name="l00681"></a><span class="lineno"> 681</span>  }</div>
<div class="line"><a name="l00682"></a><span class="lineno"> 682</span>  </div>
<div class="line"><a name="l00683"></a><span class="lineno"> 683</span>  fRet = <a class="code" href="a00836.html#a9c15f7cde7f639a841e61fa332a07992">InternalScrollDC</a>(hdc,</div>
<div class="line"><a name="l00684"></a><span class="lineno"> 684</span>  dx,</div>
<div class="line"><a name="l00685"></a><span class="lineno"> 685</span>  dy,</div>
<div class="line"><a name="l00686"></a><span class="lineno"> 686</span>  prcSrc,</div>
<div class="line"><a name="l00687"></a><span class="lineno"> 687</span>  prcClip,</div>
<div class="line"><a name="l00688"></a><span class="lineno"> 688</span>  <a class="code" href="a03257.html#a22582da0c3535d7a4fc98d7a7b03cc18">hrgnInvalid</a>,</div>
<div class="line"><a name="l00689"></a><span class="lineno"> 689</span>  hrgnUpdate,</div>
<div class="line"><a name="l00690"></a><span class="lineno"> 690</span>  prcUpdate,</div>
<div class="line"><a name="l00691"></a><span class="lineno"> 691</span>  TRUE) != ERROR;</div>
<div class="line"><a name="l00692"></a><span class="lineno"> 692</span>  </div>
<div class="line"><a name="l00693"></a><span class="lineno"> 693</span>  <span class="comment">/*</span></div>
<div class="line"><a name="l00694"></a><span class="lineno"> 694</span> <span class="comment"> * InternalScrollDC() only scrolls those areas inside the visible region.</span></div>
<div class="line"><a name="l00695"></a><span class="lineno"> 695</span> <span class="comment"> * This means it does no operations on parts of the window if the window</span></div>
<div class="line"><a name="l00696"></a><span class="lineno"> 696</span> <span class="comment"> * isn't visible. This means SPBs don't get properly invalidated. This</span></div>
<div class="line"><a name="l00697"></a><span class="lineno"> 697</span> <span class="comment"> * could be seen by starting a dir, then moving another window with the</span></div>
<div class="line"><a name="l00698"></a><span class="lineno"> 698</span> <span class="comment"> * mouse (and keeping the mouse down until the dir finished). The</span></div>
<div class="line"><a name="l00699"></a><span class="lineno"> 699</span> <span class="comment"> * screen is remembered with an SPB, and the dir window doesn't get</span></div>
<div class="line"><a name="l00700"></a><span class="lineno"> 700</span> <span class="comment"> * properly invalidated because of this.</span></div>
<div class="line"><a name="l00701"></a><span class="lineno"> 701</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00702"></a><span class="lineno"> 702</span>  <span class="keywordflow">if</span> (pwnd != NULL && AnySpbs()) {</div>
<div class="line"><a name="l00703"></a><span class="lineno"> 703</span>  </div>
<div class="line"><a name="l00704"></a><span class="lineno"> 704</span>  <span class="keywordflow">if</span> (HIWORD(prcSrc) != 0) {</div>
<div class="line"><a name="l00705"></a><span class="lineno"> 705</span>  </div>
<div class="line"><a name="l00706"></a><span class="lineno"> 706</span>  rcSrc = *prcSrc;</div>
<div class="line"><a name="l00707"></a><span class="lineno"> 707</span>  <a class="code" href="a00935.html#a59a3cfdacf3d0e5d10c20abee032cfc6">OffsetRect</a>(&rcSrc, pwnd-><a class="code" href="a02581.html#a17d59d04094aef8b577c0aa781cdf2c6">rcClient</a>.left, pwnd-><a class="code" href="a02581.html#a17d59d04094aef8b577c0aa781cdf2c6">rcClient</a>.top);</div>
<div class="line"><a name="l00708"></a><span class="lineno"> 708</span>  </div>
<div class="line"><a name="l00709"></a><span class="lineno"> 709</span>  rcSpb = rcSrc;</div>
<div class="line"><a name="l00710"></a><span class="lineno"> 710</span>  <a class="code" href="a00935.html#a59a3cfdacf3d0e5d10c20abee032cfc6">OffsetRect</a>(&rcSpb, dx, dy);</div>
<div class="line"><a name="l00711"></a><span class="lineno"> 711</span>  <a class="code" href="a00935.html#ae447c29296398f6e6ae0f28d192e606d">UnionRect</a>(&rcSpb, &rcSpb, &rcSrc);</div>
<div class="line"><a name="l00712"></a><span class="lineno"> 712</span>  </div>
<div class="line"><a name="l00713"></a><span class="lineno"> 713</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00714"></a><span class="lineno"> 714</span>  rcSpb = pwnd-><a class="code" href="a02581.html#a17d59d04094aef8b577c0aa781cdf2c6">rcClient</a>;</div>
<div class="line"><a name="l00715"></a><span class="lineno"> 715</span>  }</div>
<div class="line"><a name="l00716"></a><span class="lineno"> 716</span>  </div>
<div class="line"><a name="l00717"></a><span class="lineno"> 717</span>  <a class="code" href="a00860.html#a682e7a615d4877278df80629d78c3081">SpbCheckRect</a>(pwnd, &rcSpb, 0);</div>
<div class="line"><a name="l00718"></a><span class="lineno"> 718</span>  }</div>
<div class="line"><a name="l00719"></a><span class="lineno"> 719</span>  </div>
<div class="line"><a name="l00720"></a><span class="lineno"> 720</span>  <span class="keywordflow">return</span> fRet;</div>
<div class="line"><a name="l00721"></a><span class="lineno"> 721</span> }</div>
</div><!-- fragment -->
<p class="reference">引用了 <a class="el" href="a00644_source.html#l01832">FastWindowFromDC()</a>, <a class="el" href="a03257_source.html#l00439">hrgnInvalid</a>, <a class="el" href="a00365_source.html#l01406">tagWND::hrgnUpdate</a>, <a class="el" href="a00836_source.html#l00067">InternalScrollDC()</a>, <a class="el" href="a00935_source.html#l00132">OffsetRect()</a>, <a class="el" href="a00365_source.html#l01399">tagWND::rcClient</a>, <a class="el" href="a00860_source.html#l01031">SpbCheckRect()</a> , 以及 <a class="el" href="a00935_source.html#l00233">UnionRect()</a>.</p>
<p class="reference">被这些函数引用 <a class="el" href="a03614_source.html#l05408">NtUserScrollDC()</a> , 以及 <a class="el" href="a00890_source.html#l00780">xxxPaintIconsInSwitchWindow()</a>.</p>
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</div>
<a id="a7ecb77bf56d80ccba86e9cba46924271"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a7ecb77bf56d80ccba86e9cba46924271">◆ </a></span>GetTrueClipRgn()</h2>
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">int GetTrueClipRgn </td>
<td>(</td>
<td class="paramtype">HDC </td>
<td class="paramname"><em>hdc</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">HRGN </td>
<td class="paramname"><em>hrgnClip</em> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
</table>
</div><div class="memdoc">
<p class="definition">在文件 <a class="el" href="a00836_source.html">scrollw.c</a> 第 <a class="el" href="a00836_source.html#l00030">30</a> 行定义.</p>
<div class="fragment"><div class="line"><a name="l00033"></a><span class="lineno"> 33</span> {</div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>  POINT pt;</div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>  <span class="keywordtype">int</span> code;</div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>  </div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>  code = GreCopyVisRgn(hdc, hrgnClip);</div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  </div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  <span class="comment">/*</span></div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span> <span class="comment"> * NOTE!!! The global hrgnScrl2 is used in this routine!</span></div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  GreGetDCOrg(hdc, &pt);</div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  </div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  <span class="keywordflow">if</span> (GreGetRandomRgn(hdc, <a class="code" href="a03257.html#a0c32ef18f0038af530970be1400ae8a1">hrgnScrl2</a>, 1)) {</div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  GreOffsetRgn(<a class="code" href="a03257.html#a0c32ef18f0038af530970be1400ae8a1">hrgnScrl2</a>, pt.x, pt.y);</div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  code = IntersectRgn(hrgnClip, hrgnClip, <a class="code" href="a03257.html#a0c32ef18f0038af530970be1400ae8a1">hrgnScrl2</a>);</div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  }</div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  </div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  <span class="comment">/*</span></div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span> <span class="comment"> * Finally convert the result to DC coordinates</span></div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  GreOffsetRgn(hrgnClip, -pt.x, -pt.y);</div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  </div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  <span class="keywordflow">return</span> code;</div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span> }</div>
</div><!-- fragment -->
<p class="reference">引用了 <a class="el" href="a03257_source.html#l00462">hrgnScrl2</a>.</p>
<p class="reference">被这些函数引用 <a class="el" href="a00836_source.html#l00067">InternalScrollDC()</a>.</p>
</div>
</div>
<a id="a9c15f7cde7f639a841e61fa332a07992"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a9c15f7cde7f639a841e61fa332a07992">◆ </a></span>InternalScrollDC()</h2>
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">int InternalScrollDC </td>
<td>(</td>
<td class="paramtype">HDC </td>
<td class="paramname"><em>hdc</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">int </td>
<td class="paramname"><em>dx</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">int </td>
<td class="paramname"><em>dy</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">RECT * </td>
<td class="paramname"><em>prcSrc</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">RECT * </td>
<td class="paramname"><em>prcClip</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">HRGN </td>
<td class="paramname"><em>hrgnInvalid</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">HRGN </td>
<td class="paramname"><em>hrgnUpdate</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">LPRECT </td>
<td class="paramname"><em>prcUpdate</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">BOOL </td>
<td class="paramname"><em>fLogUnits</em> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
</table>
</div><div class="memdoc">
<p class="definition">在文件 <a class="el" href="a00836_source.html">scrollw.c</a> 第 <a class="el" href="a00836_source.html#l00067">67</a> 行定义.</p>
<div class="fragment"><div class="line"><a name="l00077"></a><span class="lineno"> 77</span> {</div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  RECT rcVis;</div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  RECT rcSrc;</div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  RECT rcClip;</div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  RECT rcUnclippedSrc;</div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  RECT rcDst;</div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  RECT rcUpdate;</div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  RECT rcValid;</div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  BOOL fSrcNotEmpty;</div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  BOOL fHaveVisRgn;</div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  POINT rgpt[2];</div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  POINT pt;</div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  <span class="keywordtype">int</span> dxLog;</div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  <span class="keywordtype">int</span> dyLog;</div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  <span class="keywordtype">int</span> wClip;</div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  <span class="keywordtype">int</span> wClipValid;</div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  </div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  fHaveVisRgn = FALSE;</div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  </div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  <span class="comment">/*</span></div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span> <span class="comment"> * Enter a critical region to ensure that no one changes visrgns</span></div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span> <span class="comment"> * or update regions while we scroll bits around.</span></div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  GreLockDisplay(<a class="code" href="a03257.html#ab597263bdbb3441715804712fcf29e6d">gpDispInfo</a>-><a class="code" href="a02605.html#a5e0929a8ef013061be966961b2eddbff">pDevLock</a>);</div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  </div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  <span class="keywordflow">if</span> ((wClip = GreGetClipBox(hdc, &rcVis, TRUE)) == ERROR) {</div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  </div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span> ErrorExit:</div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  </div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  GreUnlockDisplay(<a class="code" href="a03257.html#ab597263bdbb3441715804712fcf29e6d">gpDispInfo</a>-><a class="code" href="a02605.html#a5e0929a8ef013061be966961b2eddbff">pDevLock</a>);</div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  <span class="keywordflow">return</span> ERROR;</div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  }</div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  </div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  <a class="code" href="a00935.html#a31ccccdb469eefbb55d18b71a26af0da">CopyRect</a>(&rcSrc, (HIWORD(prcSrc) ? prcSrc : &rcVis));</div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  </div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  <span class="keywordflow">if</span> (HIWORD(prcClip))</div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  <a class="code" href="a00935.html#a31ccccdb469eefbb55d18b71a26af0da">CopyRect</a>(&rcClip, prcClip);</div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  </div>
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  dxLog = dx;</div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  dyLog = dy;</div>
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  </div>
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  <span class="keywordflow">if</span> (fLogUnits) {</div>
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  </div>
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  <span class="comment">/*</span></div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span> <span class="comment"> * Convert input parameters to device coordinates</span></div>
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  GreLPtoDP(hdc, (LPPOINT)&rcVis, 2);</div>
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  GreLPtoDP(hdc, (LPPOINT)&rcSrc, 2);</div>
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  </div>
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  <span class="keywordflow">if</span> (HIWORD(prcClip))</div>
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  GreLPtoDP(hdc, (LPPOINT)&rcClip, 2);</div>
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  </div>
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  <span class="comment">/*</span></div>
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span> <span class="comment"> * The delta values must be treated as a vector from</span></div>
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span> <span class="comment"> * the point (0, 0) to (dx, dy). Scale it as such, then</span></div>
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span> <span class="comment"> * compute the difference. This handles flipped coordinate systems.</span></div>
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  rgpt[0].x = rgpt[0].y = 0;</div>
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  rgpt[1].x = dx;</div>
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  rgpt[1].y = dy;</div>
<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  </div>
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  GreLPtoDP(hdc, rgpt, 2);</div>
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  </div>
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  dx = rgpt[1].x - rgpt[0].x;</div>
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  dy = rgpt[1].y - rgpt[0].y;</div>
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  }</div>
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  </div>
<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  <span class="keywordflow">switch</span> (wClip) {</div>
<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  <span class="keywordflow">case</span> NULLREGION:</div>
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  </div>
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span> NullExit:</div>
<div class="line"><a name="l00148"></a><span class="lineno"> 148</span>  </div>
<div class="line"><a name="l00149"></a><span class="lineno"> 149</span>  <span class="keywordflow">if</span> (hrgnUpdate && !GreSetRectRgn(hrgnUpdate, 0, 0, 0, 0))</div>
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  <span class="keywordflow">goto</span> ErrorExit;</div>
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  </div>
<div class="line"><a name="l00152"></a><span class="lineno"> 152</span>  <span class="keywordflow">if</span> (HIWORD(prcUpdate))</div>
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  <a class="code" href="a00935.html#a6f9d1e9b327899127c080496900d48d9">SetRectEmpty</a>(prcUpdate);</div>
<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  </div>
<div class="line"><a name="l00155"></a><span class="lineno"> 155</span>  GreUnlockDisplay(<a class="code" href="a03257.html#ab597263bdbb3441715804712fcf29e6d">gpDispInfo</a>-><a class="code" href="a02605.html#a5e0929a8ef013061be966961b2eddbff">pDevLock</a>);</div>
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  <span class="keywordflow">return</span> NULLREGION;</div>
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  </div>
<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  <span class="keywordflow">case</span> COMPLEXREGION:</div>
<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  <a class="code" href="a00836.html#a7ecb77bf56d80ccba86e9cba46924271">GetTrueClipRgn</a>(hdc, <a class="code" href="a03257.html#a31a801a6f7836cef5d45ab70aa8aadc2">hrgnScrlVis</a>);</div>
<div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  fHaveVisRgn = TRUE;</div>
<div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00162"></a><span class="lineno"> 162</span>  }</div>
<div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  </div>
<div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  <span class="comment">/*</span></div>
<div class="line"><a name="l00165"></a><span class="lineno"> 165</span> <span class="comment"> * First compute the source and destination rectangles.</span></div>
<div class="line"><a name="l00166"></a><span class="lineno"> 166</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00167"></a><span class="lineno"> 167</span> <span class="comment"> * rcDst = Offset(rcSrc, dx, dy)</span></div>
<div class="line"><a name="l00168"></a><span class="lineno"> 168</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  rcDst.left = rcSrc.left + dx;</div>
<div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  rcDst.right = rcSrc.right + dx;</div>
<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  rcDst.top = rcSrc.top + dy;</div>
<div class="line"><a name="l00172"></a><span class="lineno"> 172</span>  rcDst.bottom = rcSrc.bottom + dy;</div>
<div class="line"><a name="l00173"></a><span class="lineno"> 173</span>  </div>
<div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  <span class="comment">/*</span></div>
<div class="line"><a name="l00175"></a><span class="lineno"> 175</span> <span class="comment"> * If necessary, intersect with caller-supplied clip rect.</span></div>
<div class="line"><a name="l00176"></a><span class="lineno"> 176</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00177"></a><span class="lineno"> 177</span>  <span class="keywordflow">if</span> (HIWORD(prcClip)) {</div>
<div class="line"><a name="l00178"></a><span class="lineno"> 178</span>  </div>
<div class="line"><a name="l00179"></a><span class="lineno"> 179</span>  <span class="keywordflow">if</span> ((wClip == SIMPLEREGION) &&</div>
<div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  ((<a class="code" href="a03257.html#a22582da0c3535d7a4fc98d7a7b03cc18">hrgnInvalid</a> == NULL) || (<a class="code" href="a03257.html#a22582da0c3535d7a4fc98d7a7b03cc18">hrgnInvalid</a> == MAXREGION))) {</div>
<div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  </div>
<div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  <span class="comment">/*</span></div>
<div class="line"><a name="l00183"></a><span class="lineno"> 183</span> <span class="comment"> * Simple clip region: just a rect intersection</span></div>
<div class="line"><a name="l00184"></a><span class="lineno"> 184</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00185"></a><span class="lineno"> 185</span>  <span class="keywordflow">if</span> (!<a class="code" href="a00935.html#a1c87c29903dd37145cd93b64140a5d3a">IntersectRect</a>(&rcVis, &rcVis, &rcClip))</div>
<div class="line"><a name="l00186"></a><span class="lineno"> 186</span>  <span class="keywordflow">goto</span> NullExit;</div>
<div class="line"><a name="l00187"></a><span class="lineno"> 187</span>  </div>
<div class="line"><a name="l00188"></a><span class="lineno"> 188</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00189"></a><span class="lineno"> 189</span>  </div>
<div class="line"><a name="l00190"></a><span class="lineno"> 190</span>  <span class="keywordflow">if</span> (!fHaveVisRgn) {</div>
<div class="line"><a name="l00191"></a><span class="lineno"> 191</span>  </div>
<div class="line"><a name="l00192"></a><span class="lineno"> 192</span>  <span class="keywordflow">if</span> (<a class="code" href="a00836.html#a7ecb77bf56d80ccba86e9cba46924271">GetTrueClipRgn</a>(hdc, <a class="code" href="a03257.html#a31a801a6f7836cef5d45ab70aa8aadc2">hrgnScrlVis</a>) == ERROR)</div>
<div class="line"><a name="l00193"></a><span class="lineno"> 193</span>  <span class="keywordflow">goto</span> ErrorExit;</div>
<div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  </div>
<div class="line"><a name="l00195"></a><span class="lineno"> 195</span>  fHaveVisRgn = TRUE;</div>
<div class="line"><a name="l00196"></a><span class="lineno"> 196</span>  }</div>
<div class="line"><a name="l00197"></a><span class="lineno"> 197</span>  </div>
<div class="line"><a name="l00198"></a><span class="lineno"> 198</span>  GreSetRectRgn(<a class="code" href="a03257.html#a370e6d8fd1b15a3b96e8916cde9a7f09">hrgnScrl1</a>,</div>
<div class="line"><a name="l00199"></a><span class="lineno"> 199</span>  rcClip.left,</div>
<div class="line"><a name="l00200"></a><span class="lineno"> 200</span>  rcClip.top,</div>
<div class="line"><a name="l00201"></a><span class="lineno"> 201</span>  rcClip.right,</div>
<div class="line"><a name="l00202"></a><span class="lineno"> 202</span>  rcClip.bottom);</div>
<div class="line"><a name="l00203"></a><span class="lineno"> 203</span>  </div>
<div class="line"><a name="l00204"></a><span class="lineno"> 204</span>  wClip = IntersectRgn(<a class="code" href="a03257.html#a31a801a6f7836cef5d45ab70aa8aadc2">hrgnScrlVis</a>, <a class="code" href="a03257.html#a370e6d8fd1b15a3b96e8916cde9a7f09">hrgnScrl1</a>, <a class="code" href="a03257.html#a31a801a6f7836cef5d45ab70aa8aadc2">hrgnScrlVis</a>);</div>
<div class="line"><a name="l00205"></a><span class="lineno"> 205</span>  <span class="keywordflow">switch</span> (wClip) {</div>
<div class="line"><a name="l00206"></a><span class="lineno"> 206</span>  <span class="keywordflow">case</span> ERROR:</div>
<div class="line"><a name="l00207"></a><span class="lineno"> 207</span>  <span class="keywordflow">goto</span> ErrorExit;</div>
<div class="line"><a name="l00208"></a><span class="lineno"> 208</span>  </div>
<div class="line"><a name="l00209"></a><span class="lineno"> 209</span>  <span class="keywordflow">case</span> NULLREGION:</div>
<div class="line"><a name="l00210"></a><span class="lineno"> 210</span>  <span class="keywordflow">goto</span> NullExit;</div>
<div class="line"><a name="l00211"></a><span class="lineno"> 211</span>  </div>
<div class="line"><a name="l00212"></a><span class="lineno"> 212</span>  <span class="keywordflow">case</span> SIMPLEREGION:</div>
<div class="line"><a name="l00213"></a><span class="lineno"> 213</span>  </div>
<div class="line"><a name="l00214"></a><span class="lineno"> 214</span>  <span class="comment">/*</span></div>
<div class="line"><a name="l00215"></a><span class="lineno"> 215</span> <span class="comment"> * If the clipped region is simple, we're back in fat</span></div>
<div class="line"><a name="l00216"></a><span class="lineno"> 216</span> <span class="comment"> * rect city.</span></div>
<div class="line"><a name="l00217"></a><span class="lineno"> 217</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00218"></a><span class="lineno"> 218</span>  GreGetRgnBox(<a class="code" href="a03257.html#a31a801a6f7836cef5d45ab70aa8aadc2">hrgnScrlVis</a>, &rcVis);</div>
<div class="line"><a name="l00219"></a><span class="lineno"> 219</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00220"></a><span class="lineno"> 220</span>  </div>
<div class="line"><a name="l00221"></a><span class="lineno"> 221</span>  <span class="keywordflow">case</span> COMPLEXREGION:</div>
<div class="line"><a name="l00222"></a><span class="lineno"> 222</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00223"></a><span class="lineno"> 223</span>  }</div>
<div class="line"><a name="l00224"></a><span class="lineno"> 224</span>  }</div>
<div class="line"><a name="l00225"></a><span class="lineno"> 225</span>  }</div>
<div class="line"><a name="l00226"></a><span class="lineno"> 226</span>  </div>
<div class="line"><a name="l00227"></a><span class="lineno"> 227</span>  <span class="comment">/*</span></div>
<div class="line"><a name="l00228"></a><span class="lineno"> 228</span> <span class="comment"> * Time for basic scrolling area calculations:</span></div>
<div class="line"><a name="l00229"></a><span class="lineno"> 229</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00230"></a><span class="lineno"> 230</span> <span class="comment"> * Dst = Offset(Src, dx, dy) & Vis</span></div>
<div class="line"><a name="l00231"></a><span class="lineno"> 231</span> <span class="comment"> * Src = Src & Vis</span></div>
<div class="line"><a name="l00232"></a><span class="lineno"> 232</span> <span class="comment"> * Valid = Offset(Src, dx, dy) & Dst</span></div>
<div class="line"><a name="l00233"></a><span class="lineno"> 233</span> <span class="comment"> * Valid = Valid & Invalid & Offset(Invalid, dx, dy)</span></div>
<div class="line"><a name="l00234"></a><span class="lineno"> 234</span> <span class="comment"> * Update = (Src | Dst) - Valid</span></div>
<div class="line"><a name="l00235"></a><span class="lineno"> 235</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00236"></a><span class="lineno"> 236</span> <span class="comment"> * If the vis region is simple, then we know that the valid region</span></div>
<div class="line"><a name="l00237"></a><span class="lineno"> 237</span> <span class="comment"> * will be rectangular.</span></div>
<div class="line"><a name="l00238"></a><span class="lineno"> 238</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00239"></a><span class="lineno"> 239</span> <span class="comment"> * The rectangular calculation case can only deal with</span></div>
<div class="line"><a name="l00240"></a><span class="lineno"> 240</span> <span class="comment"> * hrgnInvalid == NULL or (HRGN)1: the region case is handled the hard way.</span></div>
<div class="line"><a name="l00241"></a><span class="lineno"> 241</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00242"></a><span class="lineno"> 242</span>  <span class="keywordflow">if</span> ((wClip == SIMPLEREGION) &&</div>
<div class="line"><a name="l00243"></a><span class="lineno"> 243</span>  ((<a class="code" href="a03257.html#a22582da0c3535d7a4fc98d7a7b03cc18">hrgnInvalid</a> == NULL) || (<a class="code" href="a03257.html#a22582da0c3535d7a4fc98d7a7b03cc18">hrgnInvalid</a> == MAXREGION))) {</div>
<div class="line"><a name="l00244"></a><span class="lineno"> 244</span>  </div>
<div class="line"><a name="l00245"></a><span class="lineno"> 245</span>  <span class="comment">/*</span></div>
<div class="line"><a name="l00246"></a><span class="lineno"> 246</span> <span class="comment"> * Save a copy of this for update rect calc optimization.</span></div>
<div class="line"><a name="l00247"></a><span class="lineno"> 247</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00248"></a><span class="lineno"> 248</span>  <a class="code" href="a00935.html#a31ccccdb469eefbb55d18b71a26af0da">CopyRect</a>(&rcUnclippedSrc, &rcSrc);</div>
<div class="line"><a name="l00249"></a><span class="lineno"> 249</span>  </div>
<div class="line"><a name="l00250"></a><span class="lineno"> 250</span>  <span class="comment">/*</span></div>
<div class="line"><a name="l00251"></a><span class="lineno"> 251</span> <span class="comment"> * Dst = Offset(Src, dx, dy) & Vis.</span></div>
<div class="line"><a name="l00252"></a><span class="lineno"> 252</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00253"></a><span class="lineno"> 253</span>  <a class="code" href="a00935.html#a1c87c29903dd37145cd93b64140a5d3a">IntersectRect</a>(&rcDst, &rcDst, &rcVis);</div>
<div class="line"><a name="l00254"></a><span class="lineno"> 254</span>  </div>
<div class="line"><a name="l00255"></a><span class="lineno"> 255</span>  <span class="comment">/*</span></div>
<div class="line"><a name="l00256"></a><span class="lineno"> 256</span> <span class="comment"> * Src = Src & Vis.</span></div>
<div class="line"><a name="l00257"></a><span class="lineno"> 257</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00258"></a><span class="lineno"> 258</span>  fSrcNotEmpty = <a class="code" href="a00935.html#a1c87c29903dd37145cd93b64140a5d3a">IntersectRect</a>(&rcSrc, &rcSrc, &rcVis);</div>
<div class="line"><a name="l00259"></a><span class="lineno"> 259</span>  </div>
<div class="line"><a name="l00260"></a><span class="lineno"> 260</span>  <span class="comment">/*</span></div>
<div class="line"><a name="l00261"></a><span class="lineno"> 261</span> <span class="comment"> * Valid = Offset(Src, dx, dy) & Dst.</span></div>
<div class="line"><a name="l00262"></a><span class="lineno"> 262</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00263"></a><span class="lineno"> 263</span>  <span class="keywordflow">if</span> (<a class="code" href="a03257.html#a22582da0c3535d7a4fc98d7a7b03cc18">hrgnInvalid</a> == MAXREGION) {</div>
<div class="line"><a name="l00264"></a><span class="lineno"> 264</span>  <a class="code" href="a00935.html#a6f9d1e9b327899127c080496900d48d9">SetRectEmpty</a>(&rcValid);</div>
<div class="line"><a name="l00265"></a><span class="lineno"> 265</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00266"></a><span class="lineno"> 266</span>  </div>
<div class="line"><a name="l00267"></a><span class="lineno"> 267</span>  rcValid.left = rcSrc.left + dx;</div>
<div class="line"><a name="l00268"></a><span class="lineno"> 268</span>  rcValid.right = rcSrc.right + dx;</div>
<div class="line"><a name="l00269"></a><span class="lineno"> 269</span>  rcValid.top = rcSrc.top + dy;</div>
<div class="line"><a name="l00270"></a><span class="lineno"> 270</span>  rcValid.bottom = rcSrc.bottom + dy;</div>
<div class="line"><a name="l00271"></a><span class="lineno"> 271</span>  </div>
<div class="line"><a name="l00272"></a><span class="lineno"> 272</span>  <a class="code" href="a00935.html#a1c87c29903dd37145cd93b64140a5d3a">IntersectRect</a>(&rcValid, &rcValid, &rcDst);</div>
<div class="line"><a name="l00273"></a><span class="lineno"> 273</span>  }</div>
<div class="line"><a name="l00274"></a><span class="lineno"> 274</span>  </div>
<div class="line"><a name="l00275"></a><span class="lineno"> 275</span>  <span class="comment">/*</span></div>
<div class="line"><a name="l00276"></a><span class="lineno"> 276</span> <span class="comment"> * Now calculate the update area.</span></div>
<div class="line"><a name="l00277"></a><span class="lineno"> 277</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00278"></a><span class="lineno"> 278</span> <span class="comment"> * There are two cases where the result will be a rectangle:</span></div>
<div class="line"><a name="l00279"></a><span class="lineno"> 279</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00280"></a><span class="lineno"> 280</span> <span class="comment"> * 1) The source rectangle lies completely within the visrgn,</span></div>
<div class="line"><a name="l00281"></a><span class="lineno"> 281</span> <span class="comment"> * and the source and destination don't overlap. In this</span></div>
<div class="line"><a name="l00282"></a><span class="lineno"> 282</span> <span class="comment"> * case the update region is equal to the source rect.</span></div>
<div class="line"><a name="l00283"></a><span class="lineno"> 283</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00284"></a><span class="lineno"> 284</span> <span class="comment"> * 2) The clipped source rectangle is empty, in which case</span></div>
<div class="line"><a name="l00285"></a><span class="lineno"> 285</span> <span class="comment"> * the update region is equal to the clipped dest rect.</span></div>
<div class="line"><a name="l00286"></a><span class="lineno"> 286</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00287"></a><span class="lineno"> 287</span> <span class="comment"> * 3) We're scrolling in one dimension only, and the source</span></div>
<div class="line"><a name="l00288"></a><span class="lineno"> 288</span> <span class="comment"> * and destination DO overlap. In this case we can use</span></div>
<div class="line"><a name="l00289"></a><span class="lineno"> 289</span> <span class="comment"> * UnionRect() and SubtractRect() to do the area arithmetic.</span></div>
<div class="line"><a name="l00290"></a><span class="lineno"> 290</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00291"></a><span class="lineno"> 291</span>  <span class="keywordflow">if</span> (!fSrcNotEmpty) {</div>
<div class="line"><a name="l00292"></a><span class="lineno"> 292</span>  </div>
<div class="line"><a name="l00293"></a><span class="lineno"> 293</span>  <span class="comment">/*</span></div>
<div class="line"><a name="l00294"></a><span class="lineno"> 294</span> <span class="comment"> * Clipped source is empty. Update area is the clipped dest.</span></div>
<div class="line"><a name="l00295"></a><span class="lineno"> 295</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00296"></a><span class="lineno"> 296</span>  <a class="code" href="a00935.html#a31ccccdb469eefbb55d18b71a26af0da">CopyRect</a>(&rcUpdate, &rcDst);</div>
<div class="line"><a name="l00297"></a><span class="lineno"> 297</span>  <span class="keywordflow">goto</span> RectUpdate;</div>
<div class="line"><a name="l00298"></a><span class="lineno"> 298</span>  </div>
<div class="line"><a name="l00299"></a><span class="lineno"> 299</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (<a class="code" href="a00935.html#a1c87c29903dd37145cd93b64140a5d3a">IntersectRect</a>(&rcUpdate, &rcSrc, &rcDst)) {</div>
<div class="line"><a name="l00300"></a><span class="lineno"> 300</span>  </div>
<div class="line"><a name="l00301"></a><span class="lineno"> 301</span>  <span class="comment">/*</span></div>
<div class="line"><a name="l00302"></a><span class="lineno"> 302</span> <span class="comment"> * They overlap. If we're scrolling in one dimension only</span></div>
<div class="line"><a name="l00303"></a><span class="lineno"> 303</span> <span class="comment"> * then we can use rect arithmetic...</span></div>
<div class="line"><a name="l00304"></a><span class="lineno"> 304</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00305"></a><span class="lineno"> 305</span>  <span class="keywordflow">if</span> (dx == 0 || dy == 0) {</div>
<div class="line"><a name="l00306"></a><span class="lineno"> 306</span>  </div>
<div class="line"><a name="l00307"></a><span class="lineno"> 307</span>  <a class="code" href="a00935.html#ae447c29296398f6e6ae0f28d192e606d">UnionRect</a>(&rcUpdate, &rcSrc, &rcDst);</div>
<div class="line"><a name="l00308"></a><span class="lineno"> 308</span>  <a class="code" href="a00935.html#afa9133f9221aadfcbf10c70a168f3a5f">SubtractRect</a>(&rcUpdate, &rcUpdate, &rcValid);</div>
<div class="line"><a name="l00309"></a><span class="lineno"> 309</span>  <span class="keywordflow">goto</span> RectUpdate;</div>
<div class="line"><a name="l00310"></a><span class="lineno"> 310</span>  }</div>
<div class="line"><a name="l00311"></a><span class="lineno"> 311</span>  </div>
<div class="line"><a name="l00312"></a><span class="lineno"> 312</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (<a class="code" href="a00935.html#a0cbc8750cb300c339ef3d2c0ca689f1a">EqualRect</a>(&rcSrc, &rcUnclippedSrc)) {</div>
<div class="line"><a name="l00313"></a><span class="lineno"> 313</span>  </div>
<div class="line"><a name="l00314"></a><span class="lineno"> 314</span>  <span class="comment">/*</span></div>
<div class="line"><a name="l00315"></a><span class="lineno"> 315</span> <span class="comment"> * They don't overlap, and the source lies completely</span></div>
<div class="line"><a name="l00316"></a><span class="lineno"> 316</span> <span class="comment"> * within the visible region. Update region is the source.</span></div>
<div class="line"><a name="l00317"></a><span class="lineno"> 317</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00318"></a><span class="lineno"> 318</span>  <a class="code" href="a00935.html#a31ccccdb469eefbb55d18b71a26af0da">CopyRect</a>(&rcUpdate, &rcSrc);</div>
<div class="line"><a name="l00319"></a><span class="lineno"> 319</span> RectUpdate:</div>
<div class="line"><a name="l00320"></a><span class="lineno"> 320</span>  <span class="keywordflow">if</span> (HIWORD(prcUpdate))</div>
<div class="line"><a name="l00321"></a><span class="lineno"> 321</span>  <a class="code" href="a00935.html#a31ccccdb469eefbb55d18b71a26af0da">CopyRect</a>(prcUpdate, &rcUpdate);</div>
<div class="line"><a name="l00322"></a><span class="lineno"> 322</span>  </div>
<div class="line"><a name="l00323"></a><span class="lineno"> 323</span>  <span class="keywordflow">if</span> (hrgnUpdate &&</div>
<div class="line"><a name="l00324"></a><span class="lineno"> 324</span>  !GreSetRectRgn(hrgnUpdate,</div>
<div class="line"><a name="l00325"></a><span class="lineno"> 325</span>  rcUpdate.left,</div>
<div class="line"><a name="l00326"></a><span class="lineno"> 326</span>  rcUpdate.top,</div>
<div class="line"><a name="l00327"></a><span class="lineno"> 327</span>  rcUpdate.right,</div>
<div class="line"><a name="l00328"></a><span class="lineno"> 328</span>  rcUpdate.bottom)) {</div>
<div class="line"><a name="l00329"></a><span class="lineno"> 329</span>  </div>
<div class="line"><a name="l00330"></a><span class="lineno"> 330</span>  <span class="keywordflow">goto</span> ErrorExit;</div>
<div class="line"><a name="l00331"></a><span class="lineno"> 331</span>  }</div>
<div class="line"><a name="l00332"></a><span class="lineno"> 332</span>  </div>
<div class="line"><a name="l00333"></a><span class="lineno"> 333</span>  wClip = SIMPLEREGION;</div>
<div class="line"><a name="l00334"></a><span class="lineno"> 334</span>  <span class="keywordflow">if</span> (rcUpdate.left >= rcUpdate.right ||</div>
<div class="line"><a name="l00335"></a><span class="lineno"> 335</span>  rcUpdate.top >= rcUpdate.bottom)</div>
<div class="line"><a name="l00336"></a><span class="lineno"> 336</span>  </div>
<div class="line"><a name="l00337"></a><span class="lineno"> 337</span>  wClip = NULLREGION;</div>
<div class="line"><a name="l00338"></a><span class="lineno"> 338</span>  </div>
<div class="line"><a name="l00339"></a><span class="lineno"> 339</span>  <span class="keywordflow">goto</span> DoRectBlt;</div>
<div class="line"><a name="l00340"></a><span class="lineno"> 340</span>  }</div>
<div class="line"><a name="l00341"></a><span class="lineno"> 341</span>  </div>
<div class="line"><a name="l00342"></a><span class="lineno"> 342</span>  <span class="comment">/*</span></div>
<div class="line"><a name="l00343"></a><span class="lineno"> 343</span> <span class="comment"> * The update region isn't rectangular. Need to do our</span></div>
<div class="line"><a name="l00344"></a><span class="lineno"> 344</span> <span class="comment"> * area calculations with region calls. Skip all this</span></div>
<div class="line"><a name="l00345"></a><span class="lineno"> 345</span> <span class="comment"> * if the caller doesn't care about the update region.</span></div>
<div class="line"><a name="l00346"></a><span class="lineno"> 346</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00347"></a><span class="lineno"> 347</span> <span class="comment"> * If he wants a rectangle but no region, use hrgnScrl2 as a temp.</span></div>
<div class="line"><a name="l00348"></a><span class="lineno"> 348</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00349"></a><span class="lineno"> 349</span>  <span class="keywordflow">if</span> (hrgnUpdate == NULL && HIWORD(prcUpdate))</div>
<div class="line"><a name="l00350"></a><span class="lineno"> 350</span>  hrgnUpdate = <a class="code" href="a03257.html#a0c32ef18f0038af530970be1400ae8a1">hrgnScrl2</a>;</div>
<div class="line"><a name="l00351"></a><span class="lineno"> 351</span>  </div>
<div class="line"><a name="l00352"></a><span class="lineno"> 352</span>  <span class="keywordflow">if</span> (hrgnUpdate != NULL) {</div>
<div class="line"><a name="l00353"></a><span class="lineno"> 353</span>  </div>
<div class="line"><a name="l00354"></a><span class="lineno"> 354</span>  <span class="comment">/*</span></div>
<div class="line"><a name="l00355"></a><span class="lineno"> 355</span> <span class="comment"> * hrgnUpdateCalc = (rcSrc | rcDst) - rcBltDst</span></div>
<div class="line"><a name="l00356"></a><span class="lineno"> 356</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00357"></a><span class="lineno"> 357</span>  GreSetRectRgn(<a class="code" href="a03257.html#a370e6d8fd1b15a3b96e8916cde9a7f09">hrgnScrl1</a>,</div>
<div class="line"><a name="l00358"></a><span class="lineno"> 358</span>  rcSrc.left,</div>
<div class="line"><a name="l00359"></a><span class="lineno"> 359</span>  rcSrc.top,</div>
<div class="line"><a name="l00360"></a><span class="lineno"> 360</span>  rcSrc.right,</div>
<div class="line"><a name="l00361"></a><span class="lineno"> 361</span>  rcSrc.bottom);</div>
<div class="line"><a name="l00362"></a><span class="lineno"> 362</span>  </div>
<div class="line"><a name="l00363"></a><span class="lineno"> 363</span>  GreSetRectRgn(hrgnUpdate,</div>
<div class="line"><a name="l00364"></a><span class="lineno"> 364</span>  rcDst.left,</div>
<div class="line"><a name="l00365"></a><span class="lineno"> 365</span>  rcDst.top,</div>
<div class="line"><a name="l00366"></a><span class="lineno"> 366</span>  rcDst.right,</div>
<div class="line"><a name="l00367"></a><span class="lineno"> 367</span>  rcDst.bottom);</div>
<div class="line"><a name="l00368"></a><span class="lineno"> 368</span>  </div>
<div class="line"><a name="l00369"></a><span class="lineno"> 369</span>  <span class="keywordflow">if</span> (UnionRgn(hrgnUpdate, hrgnUpdate, <a class="code" href="a03257.html#a370e6d8fd1b15a3b96e8916cde9a7f09">hrgnScrl1</a>) == ERROR)</div>
<div class="line"><a name="l00370"></a><span class="lineno"> 370</span>  <span class="keywordflow">goto</span> ErrorExit;</div>
<div class="line"><a name="l00371"></a><span class="lineno"> 371</span>  </div>
<div class="line"><a name="l00372"></a><span class="lineno"> 372</span>  GreSetRectRgn(<a class="code" href="a03257.html#a370e6d8fd1b15a3b96e8916cde9a7f09">hrgnScrl1</a>,</div>
<div class="line"><a name="l00373"></a><span class="lineno"> 373</span>  rcValid.left,</div>
<div class="line"><a name="l00374"></a><span class="lineno"> 374</span>  rcValid.top,</div>
<div class="line"><a name="l00375"></a><span class="lineno"> 375</span>  rcValid.right,</div>
<div class="line"><a name="l00376"></a><span class="lineno"> 376</span>  rcValid.bottom);</div>
<div class="line"><a name="l00377"></a><span class="lineno"> 377</span>  </div>
<div class="line"><a name="l00378"></a><span class="lineno"> 378</span>  wClip = SubtractRgn(hrgnUpdate, hrgnUpdate, <a class="code" href="a03257.html#a370e6d8fd1b15a3b96e8916cde9a7f09">hrgnScrl1</a>);</div>
<div class="line"><a name="l00379"></a><span class="lineno"> 379</span>  </div>
<div class="line"><a name="l00380"></a><span class="lineno"> 380</span>  <span class="keywordflow">if</span> (wClip == ERROR)</div>
<div class="line"><a name="l00381"></a><span class="lineno"> 381</span>  <span class="keywordflow">goto</span> ErrorExit;</div>
<div class="line"><a name="l00382"></a><span class="lineno"> 382</span>  </div>
<div class="line"><a name="l00383"></a><span class="lineno"> 383</span>  <span class="keywordflow">if</span> (HIWORD(prcUpdate))</div>
<div class="line"><a name="l00384"></a><span class="lineno"> 384</span>  GreGetRgnBox(hrgnUpdate, prcUpdate);</div>
<div class="line"><a name="l00385"></a><span class="lineno"> 385</span>  }</div>
<div class="line"><a name="l00386"></a><span class="lineno"> 386</span>  </div>
<div class="line"><a name="l00387"></a><span class="lineno"> 387</span> DoRectBlt:</div>
<div class="line"><a name="l00388"></a><span class="lineno"> 388</span>  </div>
<div class="line"><a name="l00389"></a><span class="lineno"> 389</span>  <span class="comment">/*</span></div>
<div class="line"><a name="l00390"></a><span class="lineno"> 390</span> <span class="comment"> * If the valid rectangle's not empty, then copy those bits...</span></div>
<div class="line"><a name="l00391"></a><span class="lineno"> 391</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00392"></a><span class="lineno"> 392</span>  <span class="keywordflow">if</span> (rcValid.left < rcValid.right && rcValid.top < rcValid.bottom) {</div>
<div class="line"><a name="l00393"></a><span class="lineno"> 393</span>  </div>
<div class="line"><a name="l00394"></a><span class="lineno"> 394</span>  <span class="comment">/*</span></div>
<div class="line"><a name="l00395"></a><span class="lineno"> 395</span> <span class="comment"> * If the DC is in a funny map mode, then be sure to map from</span></div>
<div class="line"><a name="l00396"></a><span class="lineno"> 396</span> <span class="comment"> * device to logical coordinates for BLT call...</span></div>
<div class="line"><a name="l00397"></a><span class="lineno"> 397</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00398"></a><span class="lineno"> 398</span>  <span class="keywordflow">if</span> (fLogUnits)</div>
<div class="line"><a name="l00399"></a><span class="lineno"> 399</span>  GreDPtoLP(hdc, (LPPOINT)&rcValid, 2);</div>
<div class="line"><a name="l00400"></a><span class="lineno"> 400</span>  </div>
<div class="line"><a name="l00401"></a><span class="lineno"> 401</span>  GreBitBlt(hdc,</div>
<div class="line"><a name="l00402"></a><span class="lineno"> 402</span>  rcValid.left,</div>
<div class="line"><a name="l00403"></a><span class="lineno"> 403</span>  rcValid.top,</div>
<div class="line"><a name="l00404"></a><span class="lineno"> 404</span>  rcValid.right - rcValid.left,</div>
<div class="line"><a name="l00405"></a><span class="lineno"> 405</span>  rcValid.bottom - rcValid.top,</div>
<div class="line"><a name="l00406"></a><span class="lineno"> 406</span>  hdc,</div>
<div class="line"><a name="l00407"></a><span class="lineno"> 407</span>  rcValid.left - dxLog,</div>
<div class="line"><a name="l00408"></a><span class="lineno"> 408</span>  rcValid.top - dyLog,</div>
<div class="line"><a name="l00409"></a><span class="lineno"> 409</span>  SRCCOPY,</div>
<div class="line"><a name="l00410"></a><span class="lineno"> 410</span>  0);</div>
<div class="line"><a name="l00411"></a><span class="lineno"> 411</span>  }</div>
<div class="line"><a name="l00412"></a><span class="lineno"> 412</span>  </div>
<div class="line"><a name="l00413"></a><span class="lineno"> 413</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00414"></a><span class="lineno"> 414</span>  </div>
<div class="line"><a name="l00415"></a><span class="lineno"> 415</span>  GreGetDCOrg(hdc, &pt);</div>
<div class="line"><a name="l00416"></a><span class="lineno"> 416</span>  </div>
<div class="line"><a name="l00417"></a><span class="lineno"> 417</span>  <span class="comment">/*</span></div>
<div class="line"><a name="l00418"></a><span class="lineno"> 418</span> <span class="comment"> * Get the true visrgn if we haven't already.</span></div>
<div class="line"><a name="l00419"></a><span class="lineno"> 419</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00420"></a><span class="lineno"> 420</span>  <span class="keywordflow">if</span> (!fHaveVisRgn) {</div>
<div class="line"><a name="l00421"></a><span class="lineno"> 421</span>  </div>
<div class="line"><a name="l00422"></a><span class="lineno"> 422</span>  <span class="keywordflow">if</span> (<a class="code" href="a00836.html#a7ecb77bf56d80ccba86e9cba46924271">GetTrueClipRgn</a>(hdc, <a class="code" href="a03257.html#a31a801a6f7836cef5d45ab70aa8aadc2">hrgnScrlVis</a>) == ERROR)</div>
<div class="line"><a name="l00423"></a><span class="lineno"> 423</span>  <span class="keywordflow">goto</span> ErrorExit;</div>
<div class="line"><a name="l00424"></a><span class="lineno"> 424</span>  </div>
<div class="line"><a name="l00425"></a><span class="lineno"> 425</span>  fHaveVisRgn = TRUE;</div>
<div class="line"><a name="l00426"></a><span class="lineno"> 426</span>  }</div>
<div class="line"><a name="l00427"></a><span class="lineno"> 427</span>  </div>
<div class="line"><a name="l00428"></a><span class="lineno"> 428</span>  <span class="comment">/*</span></div>
<div class="line"><a name="l00429"></a><span class="lineno"> 429</span> <span class="comment"> * The visrgn is not empty. Need to do all our calculations</span></div>
<div class="line"><a name="l00430"></a><span class="lineno"> 430</span> <span class="comment"> * with regions.</span></div>
<div class="line"><a name="l00431"></a><span class="lineno"> 431</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00432"></a><span class="lineno"> 432</span> <span class="comment"> * hrgnSrc = hrgnSrc & hrgnScrlVis</span></div>
<div class="line"><a name="l00433"></a><span class="lineno"> 433</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00434"></a><span class="lineno"> 434</span>  GreSetRectRgn(<a class="code" href="a03257.html#a0787ffd7a666153b6a60d8eb73917037">hrgnScrlSrc</a>,</div>
<div class="line"><a name="l00435"></a><span class="lineno"> 435</span>  rcSrc.left,</div>
<div class="line"><a name="l00436"></a><span class="lineno"> 436</span>  rcSrc.top,</div>
<div class="line"><a name="l00437"></a><span class="lineno"> 437</span>  rcSrc.right,</div>
<div class="line"><a name="l00438"></a><span class="lineno"> 438</span>  rcSrc.bottom);</div>
<div class="line"><a name="l00439"></a><span class="lineno"> 439</span>  </div>
<div class="line"><a name="l00440"></a><span class="lineno"> 440</span>  <span class="keywordflow">if</span> (IntersectRgn(<a class="code" href="a03257.html#a0787ffd7a666153b6a60d8eb73917037">hrgnScrlSrc</a>, <a class="code" href="a03257.html#a0787ffd7a666153b6a60d8eb73917037">hrgnScrlSrc</a>, <a class="code" href="a03257.html#a31a801a6f7836cef5d45ab70aa8aadc2">hrgnScrlVis</a>) == ERROR)</div>
<div class="line"><a name="l00441"></a><span class="lineno"> 441</span>  <span class="keywordflow">goto</span> ErrorExit;</div>
<div class="line"><a name="l00442"></a><span class="lineno"> 442</span>  </div>
<div class="line"><a name="l00443"></a><span class="lineno"> 443</span>  <span class="comment">/*</span></div>
<div class="line"><a name="l00444"></a><span class="lineno"> 444</span> <span class="comment"> * hrgnDst = hrgnDst & hrgnScrlVis</span></div>
<div class="line"><a name="l00445"></a><span class="lineno"> 445</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00446"></a><span class="lineno"> 446</span>  GreSetRectRgn(<a class="code" href="a03257.html#a0290a2221e753feb7b6a59fcf25f4ffb">hrgnScrlDst</a>,</div>
<div class="line"><a name="l00447"></a><span class="lineno"> 447</span>  rcDst.left,</div>
<div class="line"><a name="l00448"></a><span class="lineno"> 448</span>  rcDst.top,</div>
<div class="line"><a name="l00449"></a><span class="lineno"> 449</span>  rcDst.right,</div>
<div class="line"><a name="l00450"></a><span class="lineno"> 450</span>  rcDst.bottom);</div>
<div class="line"><a name="l00451"></a><span class="lineno"> 451</span>  </div>
<div class="line"><a name="l00452"></a><span class="lineno"> 452</span>  <span class="keywordflow">if</span> (IntersectRgn(<a class="code" href="a03257.html#a0290a2221e753feb7b6a59fcf25f4ffb">hrgnScrlDst</a>, <a class="code" href="a03257.html#a0290a2221e753feb7b6a59fcf25f4ffb">hrgnScrlDst</a>, <a class="code" href="a03257.html#a31a801a6f7836cef5d45ab70aa8aadc2">hrgnScrlVis</a>) == ERROR)</div>
<div class="line"><a name="l00453"></a><span class="lineno"> 453</span>  <span class="keywordflow">goto</span> ErrorExit;</div>
<div class="line"><a name="l00454"></a><span class="lineno"> 454</span>  </div>
<div class="line"><a name="l00455"></a><span class="lineno"> 455</span>  <span class="comment">/*</span></div>
<div class="line"><a name="l00456"></a><span class="lineno"> 456</span> <span class="comment"> * Now compute the valid region:</span></div>
<div class="line"><a name="l00457"></a><span class="lineno"> 457</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00458"></a><span class="lineno"> 458</span> <span class="comment"> * Valid = Offset(Src, dx, dy) & Dst.</span></div>
<div class="line"><a name="l00459"></a><span class="lineno"> 459</span> <span class="comment"> * Valid = Valid & Invalid & Offset(Invalid, dx, dy)</span></div>
<div class="line"><a name="l00460"></a><span class="lineno"> 460</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00461"></a><span class="lineno"> 461</span> <span class="comment"> * If hrgnInvalid is (HRGN)1, then the valid area is empty.</span></div>
<div class="line"><a name="l00462"></a><span class="lineno"> 462</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00463"></a><span class="lineno"> 463</span>  wClipValid = NULLREGION;</div>
<div class="line"><a name="l00464"></a><span class="lineno"> 464</span>  <span class="keywordflow">if</span> (<a class="code" href="a03257.html#a22582da0c3535d7a4fc98d7a7b03cc18">hrgnInvalid</a> != MAXREGION) {</div>
<div class="line"><a name="l00465"></a><span class="lineno"> 465</span>  </div>
<div class="line"><a name="l00466"></a><span class="lineno"> 466</span>  <span class="comment">/*</span></div>
<div class="line"><a name="l00467"></a><span class="lineno"> 467</span> <span class="comment"> * Valid = Offset(Src, dx, dy) & Dst</span></div>
<div class="line"><a name="l00468"></a><span class="lineno"> 468</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00469"></a><span class="lineno"> 469</span>  <span class="keywordflow">if</span> (CopyRgn(<a class="code" href="a03257.html#aed1964e1e99dd24b6c0b6f5396afc7b7">hrgnScrlValid</a>, <a class="code" href="a03257.html#a0787ffd7a666153b6a60d8eb73917037">hrgnScrlSrc</a>) == ERROR)</div>
<div class="line"><a name="l00470"></a><span class="lineno"> 470</span>  <span class="keywordflow">goto</span> ErrorExit;</div>
<div class="line"><a name="l00471"></a><span class="lineno"> 471</span>  </div>
<div class="line"><a name="l00472"></a><span class="lineno"> 472</span>  GreOffsetRgn(<a class="code" href="a03257.html#aed1964e1e99dd24b6c0b6f5396afc7b7">hrgnScrlValid</a>, dx, dy);</div>
<div class="line"><a name="l00473"></a><span class="lineno"> 473</span>  wClipValid = IntersectRgn(<a class="code" href="a03257.html#aed1964e1e99dd24b6c0b6f5396afc7b7">hrgnScrlValid</a>,</div>
<div class="line"><a name="l00474"></a><span class="lineno"> 474</span>  <a class="code" href="a03257.html#aed1964e1e99dd24b6c0b6f5396afc7b7">hrgnScrlValid</a>,</div>
<div class="line"><a name="l00475"></a><span class="lineno"> 475</span>  <a class="code" href="a03257.html#a0290a2221e753feb7b6a59fcf25f4ffb">hrgnScrlDst</a>);</div>
<div class="line"><a name="l00476"></a><span class="lineno"> 476</span>  </div>
<div class="line"><a name="l00477"></a><span class="lineno"> 477</span>  <span class="comment">/*</span></div>
<div class="line"><a name="l00478"></a><span class="lineno"> 478</span> <span class="comment"> * Valid = Valid - Invalid - Offset(Invalid, dx, dy)</span></div>
<div class="line"><a name="l00479"></a><span class="lineno"> 479</span> <span class="comment"> * We need bother only if hrgnInvalid is a real region.</span></div>
<div class="line"><a name="l00480"></a><span class="lineno"> 480</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00481"></a><span class="lineno"> 481</span>  <span class="keywordflow">if</span> (<a class="code" href="a03257.html#a22582da0c3535d7a4fc98d7a7b03cc18">hrgnInvalid</a> > MAXREGION) {</div>
<div class="line"><a name="l00482"></a><span class="lineno"> 482</span>  </div>
<div class="line"><a name="l00483"></a><span class="lineno"> 483</span>  <span class="keywordflow">if</span> (wClipValid != ERROR && wClipValid != NULLREGION) {</div>
<div class="line"><a name="l00484"></a><span class="lineno"> 484</span>  </div>
<div class="line"><a name="l00485"></a><span class="lineno"> 485</span>  <span class="comment">/*</span></div>
<div class="line"><a name="l00486"></a><span class="lineno"> 486</span> <span class="comment"> * hrgnInvalid is in screen coordinates: map to dc coords</span></div>
<div class="line"><a name="l00487"></a><span class="lineno"> 487</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00488"></a><span class="lineno"> 488</span>  CopyRgn(<a class="code" href="a03257.html#a0c32ef18f0038af530970be1400ae8a1">hrgnScrl2</a>, <a class="code" href="a03257.html#a22582da0c3535d7a4fc98d7a7b03cc18">hrgnInvalid</a>);</div>
<div class="line"><a name="l00489"></a><span class="lineno"> 489</span>  GreOffsetRgn(<a class="code" href="a03257.html#a0c32ef18f0038af530970be1400ae8a1">hrgnScrl2</a>, -pt.x, -pt.y);</div>
<div class="line"><a name="l00490"></a><span class="lineno"> 490</span>  </div>
<div class="line"><a name="l00491"></a><span class="lineno"> 491</span>  wClipValid = SubtractRgn(<a class="code" href="a03257.html#aed1964e1e99dd24b6c0b6f5396afc7b7">hrgnScrlValid</a>,</div>
<div class="line"><a name="l00492"></a><span class="lineno"> 492</span>  <a class="code" href="a03257.html#aed1964e1e99dd24b6c0b6f5396afc7b7">hrgnScrlValid</a>,</div>
<div class="line"><a name="l00493"></a><span class="lineno"> 493</span>  <a class="code" href="a03257.html#a0c32ef18f0038af530970be1400ae8a1">hrgnScrl2</a>);</div>
<div class="line"><a name="l00494"></a><span class="lineno"> 494</span>  }</div>
<div class="line"><a name="l00495"></a><span class="lineno"> 495</span>  </div>
<div class="line"><a name="l00496"></a><span class="lineno"> 496</span>  <span class="keywordflow">if</span> (wClipValid != ERROR && wClipValid != NULLREGION) {</div>
<div class="line"><a name="l00497"></a><span class="lineno"> 497</span>  GreOffsetRgn(<a class="code" href="a03257.html#a0c32ef18f0038af530970be1400ae8a1">hrgnScrl2</a>, dx, dy);</div>
<div class="line"><a name="l00498"></a><span class="lineno"> 498</span>  </div>
<div class="line"><a name="l00499"></a><span class="lineno"> 499</span>  wClipValid = SubtractRgn(<a class="code" href="a03257.html#aed1964e1e99dd24b6c0b6f5396afc7b7">hrgnScrlValid</a>,</div>
<div class="line"><a name="l00500"></a><span class="lineno"> 500</span>  <a class="code" href="a03257.html#aed1964e1e99dd24b6c0b6f5396afc7b7">hrgnScrlValid</a>,</div>
<div class="line"><a name="l00501"></a><span class="lineno"> 501</span>  <a class="code" href="a03257.html#a0c32ef18f0038af530970be1400ae8a1">hrgnScrl2</a>);</div>
<div class="line"><a name="l00502"></a><span class="lineno"> 502</span>  }</div>
<div class="line"><a name="l00503"></a><span class="lineno"> 503</span>  }</div>
<div class="line"><a name="l00504"></a><span class="lineno"> 504</span>  </div>
<div class="line"><a name="l00505"></a><span class="lineno"> 505</span>  <span class="keywordflow">if</span> (wClipValid == ERROR)</div>
<div class="line"><a name="l00506"></a><span class="lineno"> 506</span>  <span class="keywordflow">goto</span> ErrorExit;</div>
<div class="line"><a name="l00507"></a><span class="lineno"> 507</span>  }</div>
<div class="line"><a name="l00508"></a><span class="lineno"> 508</span>  </div>
<div class="line"><a name="l00509"></a><span class="lineno"> 509</span>  <span class="comment">/*</span></div>
<div class="line"><a name="l00510"></a><span class="lineno"> 510</span> <span class="comment"> * If he wants a rectangle but no region, use hrgnScrl2 as a temp.</span></div>
<div class="line"><a name="l00511"></a><span class="lineno"> 511</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00512"></a><span class="lineno"> 512</span>  <span class="keywordflow">if</span> (hrgnUpdate == NULL && HIWORD(prcUpdate))</div>
<div class="line"><a name="l00513"></a><span class="lineno"> 513</span>  hrgnUpdate = <a class="code" href="a03257.html#a0c32ef18f0038af530970be1400ae8a1">hrgnScrl2</a>;</div>
<div class="line"><a name="l00514"></a><span class="lineno"> 514</span>  </div>
<div class="line"><a name="l00515"></a><span class="lineno"> 515</span>  <span class="keywordflow">if</span> (hrgnUpdate != NULL) {</div>
<div class="line"><a name="l00516"></a><span class="lineno"> 516</span>  </div>
<div class="line"><a name="l00517"></a><span class="lineno"> 517</span>  <span class="comment">/*</span></div>
<div class="line"><a name="l00518"></a><span class="lineno"> 518</span> <span class="comment"> * Update = (Src | Dst) - Valid.</span></div>
<div class="line"><a name="l00519"></a><span class="lineno"> 519</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00520"></a><span class="lineno"> 520</span>  wClip = UnionRgn(hrgnUpdate, <a class="code" href="a03257.html#a0290a2221e753feb7b6a59fcf25f4ffb">hrgnScrlDst</a>, <a class="code" href="a03257.html#a0787ffd7a666153b6a60d8eb73917037">hrgnScrlSrc</a>);</div>
<div class="line"><a name="l00521"></a><span class="lineno"> 521</span>  <span class="keywordflow">if</span> (wClip == ERROR)</div>
<div class="line"><a name="l00522"></a><span class="lineno"> 522</span>  <span class="keywordflow">goto</span> ErrorExit;</div>
<div class="line"><a name="l00523"></a><span class="lineno"> 523</span>  </div>
<div class="line"><a name="l00524"></a><span class="lineno"> 524</span>  <span class="keywordflow">if</span> (wClipValid != NULLREGION)</div>
<div class="line"><a name="l00525"></a><span class="lineno"> 525</span>  wClip = SubtractRgn(hrgnUpdate, hrgnUpdate, <a class="code" href="a03257.html#aed1964e1e99dd24b6c0b6f5396afc7b7">hrgnScrlValid</a>);</div>
<div class="line"><a name="l00526"></a><span class="lineno"> 526</span>  </div>
<div class="line"><a name="l00527"></a><span class="lineno"> 527</span>  <span class="keywordflow">if</span> (HIWORD(prcUpdate))</div>
<div class="line"><a name="l00528"></a><span class="lineno"> 528</span>  GreGetRgnBox(hrgnUpdate, prcUpdate);</div>
<div class="line"><a name="l00529"></a><span class="lineno"> 529</span>  }</div>
<div class="line"><a name="l00530"></a><span class="lineno"> 530</span>  </div>
<div class="line"><a name="l00531"></a><span class="lineno"> 531</span>  <span class="keywordflow">if</span> (wClipValid != NULLREGION) {</div>
<div class="line"><a name="l00532"></a><span class="lineno"> 532</span>  </div>
<div class="line"><a name="l00533"></a><span class="lineno"> 533</span> <span class="preprocessor"> #ifdef LATER</span></div>
<div class="line"><a name="l00534"></a><span class="lineno"> 534</span>  </div>
<div class="line"><a name="l00535"></a><span class="lineno"> 535</span>  <span class="comment">/*</span></div>
<div class="line"><a name="l00536"></a><span class="lineno"> 536</span> <span class="comment"> * don't use the visrgn here</span></div>
<div class="line"><a name="l00537"></a><span class="lineno"> 537</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00538"></a><span class="lineno"> 538</span>  HRGN hrgnSaveVis = GreCreateRectRgn(0, 0, 0, 0);</div>
<div class="line"><a name="l00539"></a><span class="lineno"> 539</span>  </div>
<div class="line"><a name="l00540"></a><span class="lineno"> 540</span>  <span class="keywordflow">if</span> (hrgnSaveVis != NULL) {</div>
<div class="line"><a name="l00541"></a><span class="lineno"> 541</span>  </div>
<div class="line"><a name="l00542"></a><span class="lineno"> 542</span>  BOOL fClipped;</div>
<div class="line"><a name="l00543"></a><span class="lineno"> 543</span>  </div>
<div class="line"><a name="l00544"></a><span class="lineno"> 544</span>  fClipped = (GreGetRandomRgn(hdc, hrgnSaveVis, 1) == 1);</div>
<div class="line"><a name="l00545"></a><span class="lineno"> 545</span>  GreExtSelectClipRgn(hdc, <a class="code" href="a03257.html#aed1964e1e99dd24b6c0b6f5396afc7b7">hrgnScrlValid</a>, RGN_COPY);</div>
<div class="line"><a name="l00546"></a><span class="lineno"> 546</span>  </div>
<div class="line"><a name="l00547"></a><span class="lineno"> 547</span>  <span class="comment">/*</span></div>
<div class="line"><a name="l00548"></a><span class="lineno"> 548</span> <span class="comment"> * If the DC is in a funny map mode, then be sure to</span></div>
<div class="line"><a name="l00549"></a><span class="lineno"> 549</span> <span class="comment"> * map from device to logical coordinates for BLT call...</span></div>
<div class="line"><a name="l00550"></a><span class="lineno"> 550</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00551"></a><span class="lineno"> 551</span>  <span class="keywordflow">if</span> (fLogUnits)</div>
<div class="line"><a name="l00552"></a><span class="lineno"> 552</span>  GreDPtoLP(hdc, (LPPOINT)&rcDst, 2);</div>
<div class="line"><a name="l00553"></a><span class="lineno"> 553</span>  </div>
<div class="line"><a name="l00554"></a><span class="lineno"> 554</span>  <span class="comment">/*</span></div>
<div class="line"><a name="l00555"></a><span class="lineno"> 555</span> <span class="comment"> * Gdi can take along time to process this call if</span></div>
<div class="line"><a name="l00556"></a><span class="lineno"> 556</span> <span class="comment"> * it's a printer DC</span></div>
<div class="line"><a name="l00557"></a><span class="lineno"> 557</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00558"></a><span class="lineno"> 558</span>  GreBitBlt(hdc,</div>
<div class="line"><a name="l00559"></a><span class="lineno"> 559</span>  rcDst.left,</div>
<div class="line"><a name="l00560"></a><span class="lineno"> 560</span>  rcDst.top,</div>
<div class="line"><a name="l00561"></a><span class="lineno"> 561</span>  rcDst.right - rcDst.left,</div>
<div class="line"><a name="l00562"></a><span class="lineno"> 562</span>  rcDst.bottom - rcDst.top,</div>
<div class="line"><a name="l00563"></a><span class="lineno"> 563</span>  hdc,</div>
<div class="line"><a name="l00564"></a><span class="lineno"> 564</span>  rcDst.left - dxLog,</div>
<div class="line"><a name="l00565"></a><span class="lineno"> 565</span>  rcDst.top - dyLog,</div>
<div class="line"><a name="l00566"></a><span class="lineno"> 566</span>  SRCCOPY,</div>
<div class="line"><a name="l00567"></a><span class="lineno"> 567</span>  0);</div>
<div class="line"><a name="l00568"></a><span class="lineno"> 568</span>  </div>
<div class="line"><a name="l00569"></a><span class="lineno"> 569</span>  GreExtSelectClipRgn(hdc,</div>
<div class="line"><a name="l00570"></a><span class="lineno"> 570</span>  (fClipped ? hrgnSaveVis : NULL),</div>
<div class="line"><a name="l00571"></a><span class="lineno"> 571</span>  RGN_COPY);</div>
<div class="line"><a name="l00572"></a><span class="lineno"> 572</span>  </div>
<div class="line"><a name="l00573"></a><span class="lineno"> 573</span>  GreDeleteObject(hrgnSaveVis);</div>
<div class="line"><a name="l00574"></a><span class="lineno"> 574</span>  }</div>
<div class="line"><a name="l00575"></a><span class="lineno"> 575</span>  </div>
<div class="line"><a name="l00576"></a><span class="lineno"> 576</span> <span class="preprocessor"> #else</span></div>
<div class="line"><a name="l00577"></a><span class="lineno"> 577</span>  </div>
<div class="line"><a name="l00578"></a><span class="lineno"> 578</span>  <span class="comment">/*</span></div>
<div class="line"><a name="l00579"></a><span class="lineno"> 579</span> <span class="comment"> * Visrgn is expected in screen coordinates: offset</span></div>
<div class="line"><a name="l00580"></a><span class="lineno"> 580</span> <span class="comment"> * as appropriate.</span></div>
<div class="line"><a name="l00581"></a><span class="lineno"> 581</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00582"></a><span class="lineno"> 582</span>  GreOffsetRgn(<a class="code" href="a03257.html#aed1964e1e99dd24b6c0b6f5396afc7b7">hrgnScrlValid</a>, pt.x, pt.y);</div>
<div class="line"><a name="l00583"></a><span class="lineno"> 583</span>  </div>
<div class="line"><a name="l00584"></a><span class="lineno"> 584</span>  <span class="comment">/*</span></div>
<div class="line"><a name="l00585"></a><span class="lineno"> 585</span> <span class="comment"> * Select in the temporary vis rgn, saving the old</span></div>
<div class="line"><a name="l00586"></a><span class="lineno"> 586</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00587"></a><span class="lineno"> 587</span>  </div>
<div class="line"><a name="l00588"></a><span class="lineno"> 588</span>  GreSelectVisRgn(hdc, <a class="code" href="a03257.html#aed1964e1e99dd24b6c0b6f5396afc7b7">hrgnScrlValid</a>, NULL, SVR_SWAP);</div>
<div class="line"><a name="l00589"></a><span class="lineno"> 589</span>  </div>
<div class="line"><a name="l00590"></a><span class="lineno"> 590</span>  <span class="comment">/*</span></div>
<div class="line"><a name="l00591"></a><span class="lineno"> 591</span> <span class="comment"> * If the DC is in a funny map mode, then be sure to map from</span></div>
<div class="line"><a name="l00592"></a><span class="lineno"> 592</span> <span class="comment"> * device to logical coordinates for BLT call...</span></div>
<div class="line"><a name="l00593"></a><span class="lineno"> 593</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00594"></a><span class="lineno"> 594</span>  <span class="keywordflow">if</span> (fLogUnits)</div>
<div class="line"><a name="l00595"></a><span class="lineno"> 595</span>  GreDPtoLP(hdc, (LPPOINT)&rcDst, 2);</div>
<div class="line"><a name="l00596"></a><span class="lineno"> 596</span>  </div>
<div class="line"><a name="l00597"></a><span class="lineno"> 597</span>  <span class="comment">/*</span></div>
<div class="line"><a name="l00598"></a><span class="lineno"> 598</span> <span class="comment"> * Gdi can take along time to process this call if it's</span></div>
<div class="line"><a name="l00599"></a><span class="lineno"> 599</span> <span class="comment"> * a printer DC.</span></div>
<div class="line"><a name="l00600"></a><span class="lineno"> 600</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00601"></a><span class="lineno"> 601</span>  GreBitBlt(hdc,</div>
<div class="line"><a name="l00602"></a><span class="lineno"> 602</span>  rcDst.left,</div>
<div class="line"><a name="l00603"></a><span class="lineno"> 603</span>  rcDst.top,</div>
<div class="line"><a name="l00604"></a><span class="lineno"> 604</span>  rcDst.right - rcDst.left,</div>
<div class="line"><a name="l00605"></a><span class="lineno"> 605</span>  rcDst.bottom - rcDst.top,</div>
<div class="line"><a name="l00606"></a><span class="lineno"> 606</span>  hdc,</div>
<div class="line"><a name="l00607"></a><span class="lineno"> 607</span>  rcDst.left - dxLog,</div>
<div class="line"><a name="l00608"></a><span class="lineno"> 608</span>  rcDst.top - dyLog,</div>
<div class="line"><a name="l00609"></a><span class="lineno"> 609</span>  SRCCOPY,</div>
<div class="line"><a name="l00610"></a><span class="lineno"> 610</span>  0);</div>
<div class="line"><a name="l00611"></a><span class="lineno"> 611</span>  </div>
<div class="line"><a name="l00612"></a><span class="lineno"> 612</span>  <span class="comment">/*</span></div>
<div class="line"><a name="l00613"></a><span class="lineno"> 613</span> <span class="comment"> * Restore the old vis rgn, leaving hrgnScrlValid with</span></div>
<div class="line"><a name="l00614"></a><span class="lineno"> 614</span> <span class="comment"> * a valid rgn</span></div>
<div class="line"><a name="l00615"></a><span class="lineno"> 615</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00616"></a><span class="lineno"> 616</span>  GreSelectVisRgn(hdc, <a class="code" href="a03257.html#aed1964e1e99dd24b6c0b6f5396afc7b7">hrgnScrlValid</a>, NULL, SVR_SWAP);</div>
<div class="line"><a name="l00617"></a><span class="lineno"> 617</span>  </div>
<div class="line"><a name="l00618"></a><span class="lineno"> 618</span> <span class="preprocessor"> #endif</span></div>
<div class="line"><a name="l00619"></a><span class="lineno"> 619</span>  }</div>
<div class="line"><a name="l00620"></a><span class="lineno"> 620</span>  }</div>
<div class="line"><a name="l00621"></a><span class="lineno"> 621</span>  </div>
<div class="line"><a name="l00622"></a><span class="lineno"> 622</span>  <span class="comment">/*</span></div>
<div class="line"><a name="l00623"></a><span class="lineno"> 623</span> <span class="comment"> * If necessary, convert the resultant update rect back</span></div>
<div class="line"><a name="l00624"></a><span class="lineno"> 624</span> <span class="comment"> * to logical coordinates.</span></div>
<div class="line"><a name="l00625"></a><span class="lineno"> 625</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00626"></a><span class="lineno"> 626</span>  <span class="keywordflow">if</span> (fLogUnits && HIWORD(prcUpdate))</div>
<div class="line"><a name="l00627"></a><span class="lineno"> 627</span>  GreDPtoLP(hdc, (LPPOINT)prcUpdate, 2);</div>
<div class="line"><a name="l00628"></a><span class="lineno"> 628</span>  </div>
<div class="line"><a name="l00629"></a><span class="lineno"> 629</span>  GreUnlockDisplay(<a class="code" href="a03257.html#ab597263bdbb3441715804712fcf29e6d">gpDispInfo</a>-><a class="code" href="a02605.html#a5e0929a8ef013061be966961b2eddbff">pDevLock</a>);</div>
<div class="line"><a name="l00630"></a><span class="lineno"> 630</span>  </div>
<div class="line"><a name="l00631"></a><span class="lineno"> 631</span>  <span class="keywordflow">return</span> wClip;</div>
<div class="line"><a name="l00632"></a><span class="lineno"> 632</span> }</div>
</div><!-- fragment -->
<p class="reference">引用了 <a class="el" href="a00935_source.html#l00391">CopyRect()</a>, <a class="el" href="a00935_source.html#l00285">EqualRect()</a>, <a class="el" href="a00836_source.html#l00030">GetTrueClipRgn()</a>, <a class="el" href="a03257_source.html#l00125">gpDispInfo</a>, <a class="el" href="a03257_source.html#l00439">hrgnInvalid</a>, <a class="el" href="a03257_source.html#l00461">hrgnScrl1</a>, <a class="el" href="a03257_source.html#l00462">hrgnScrl2</a>, <a class="el" href="a03257_source.html#l00465">hrgnScrlDst</a>, <a class="el" href="a03257_source.html#l00464">hrgnScrlSrc</a>, <a class="el" href="a03257_source.html#l00466">hrgnScrlValid</a>, <a class="el" href="a03257_source.html#l00463">hrgnScrlVis</a>, <a class="el" href="a00935_source.html#l00184">IntersectRect()</a>, <a class="el" href="a00365_source.html#l01577">tagDISPLAYINFO::pDevLock</a>, <a class="el" href="a00935_source.html#l00414">SetRectEmpty()</a>, <a class="el" href="a00935_source.html#l00316">SubtractRect()</a> , 以及 <a class="el" href="a00935_source.html#l00233">UnionRect()</a>.</p>
<p class="reference">被这些函数引用 <a class="el" href="a00836_source.html#l00642">_ScrollDC()</a> , 以及 <a class="el" href="a00836_source.html#l00731">xxxScrollWindowEx()</a>.</p>
</div>
</div>
<a id="a1cef636c724052493ab55c00c4ca21f3"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a1cef636c724052493ab55c00c4ca21f3">◆ </a></span>xxxScrollWindowEx()</h2>
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">int xxxScrollWindowEx </td>
<td>(</td>
<td class="paramtype"><a class="el" href="a00365.html#a1a2ef1c363aa0787a8f8a7dde2a34aaf">PWND</a> </td>
<td class="paramname"><em>pwnd</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">int </td>
<td class="paramname"><em>dx</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">int </td>
<td class="paramname"><em>dy</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">RECT * </td>
<td class="paramname"><em>prcScroll</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">RECT * </td>
<td class="paramname"><em>prcClip</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">HRGN </td>
<td class="paramname"><em>hrgnUpdate</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">LPRECT </td>
<td class="paramname"><em>prcUpdate</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="a00563.html#a074685e97e89d6aa2accdfcb82328699">DWORD</a> </td>
<td class="paramname"><em>flags</em> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
</table>
</div><div class="memdoc">
<p class="definition">在文件 <a class="el" href="a00836_source.html">scrollw.c</a> 第 <a class="el" href="a00836_source.html#l00731">731</a> 行定义.</p>
<div class="fragment"><div class="line"><a name="l00740"></a><span class="lineno"> 740</span> {</div>
<div class="line"><a name="l00741"></a><span class="lineno"> 741</span>  <a class="code" href="a00953.html#a392e62da233ed3e2f7c3fd4f487a3896">INT</a> code;</div>
<div class="line"><a name="l00742"></a><span class="lineno"> 742</span>  HDC hdc;</div>
<div class="line"><a name="l00743"></a><span class="lineno"> 743</span>  <span class="keywordtype">int</span> dxDev;</div>
<div class="line"><a name="l00744"></a><span class="lineno"> 744</span>  <span class="keywordtype">int</span> dyDev;</div>
<div class="line"><a name="l00745"></a><span class="lineno"> 745</span>  RECT rcSrcDev;</div>
<div class="line"><a name="l00746"></a><span class="lineno"> 746</span>  RECT rcSpb, rcSrc;</div>
<div class="line"><a name="l00747"></a><span class="lineno"> 747</span>  <a class="code" href="a00563.html#a074685e97e89d6aa2accdfcb82328699">DWORD</a> flagsDCX;</div>
<div class="line"><a name="l00748"></a><span class="lineno"> 748</span>  BOOL fHideCaret;</div>
<div class="line"><a name="l00749"></a><span class="lineno"> 749</span>  BOOL fRcScroll = (BOOL)HIWORD(prcScroll);</div>
<div class="line"><a name="l00750"></a><span class="lineno"> 750</span>  BOOL fInvisible = FALSE;</div>
<div class="line"><a name="l00751"></a><span class="lineno"> 751</span>  <a class="code" href="a02653.html">PCARET</a> pcaret;</div>
<div class="line"><a name="l00752"></a><span class="lineno"> 752</span>  POINT pt;</div>
<div class="line"><a name="l00753"></a><span class="lineno"> 753</span>  <a class="code" href="a01881.html">TL</a> tlpwndChild;</div>
<div class="line"><a name="l00754"></a><span class="lineno"> 754</span>  HRGN <a class="code" href="a03257.html#a22582da0c3535d7a4fc98d7a7b03cc18">hrgnInvalid</a>;</div>
<div class="line"><a name="l00755"></a><span class="lineno"> 755</span>  </div>
<div class="line"><a name="l00756"></a><span class="lineno"> 756</span>  <a class="code" href="a00899.html#a70b09c3e2b495630f4205d34be505afb">CheckLock</a>(pwnd);</div>
<div class="line"><a name="l00757"></a><span class="lineno"> 757</span>  </div>
<div class="line"><a name="l00758"></a><span class="lineno"> 758</span>  <span class="keywordflow">if</span> (pwnd == NULL)</div>
<div class="line"><a name="l00759"></a><span class="lineno"> 759</span>  pwnd = <a class="code" href="a00257.html#a8315d2c807ba18ba9e528c40614b6173">PtiCurrent</a>()-><a class="code" href="a02889.html#abb1184e0c5805b5ad89b79dcc2bd17c8">rpdesk</a>-><a class="code" href="a02801.html#a76d4881aa4c15330103e83a80e6b5dc7">pDeskInfo</a>-><a class="code" href="a02609.html#a68937d60a6f49b7a8431db62b38ea721">spwnd</a>; <span class="comment">// pwndDesktop</span></div>
<div class="line"><a name="l00760"></a><span class="lineno"> 760</span>  </div>
<div class="line"><a name="l00761"></a><span class="lineno"> 761</span>  <span class="comment">/*</span></div>
<div class="line"><a name="l00762"></a><span class="lineno"> 762</span> <span class="comment"> * If nothing's moving, nothing to do.</span></div>
<div class="line"><a name="l00763"></a><span class="lineno"> 763</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00764"></a><span class="lineno"> 764</span>  <span class="keywordflow">if</span> ((dx | dy) == 0 ) {</div>
<div class="line"><a name="l00765"></a><span class="lineno"> 765</span>  </div>
<div class="line"><a name="l00766"></a><span class="lineno"> 766</span>  <span class="keywordflow">goto</span> DoNothing;</div>
<div class="line"><a name="l00767"></a><span class="lineno"> 767</span>  </div>
<div class="line"><a name="l00768"></a><span class="lineno"> 768</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (!<a class="code" href="a00365.html#ad3225ce06580cb58802233512f3d9c81">IsVisible</a>(pwnd)) {</div>
<div class="line"><a name="l00769"></a><span class="lineno"> 769</span>  </div>
<div class="line"><a name="l00770"></a><span class="lineno"> 770</span>  <span class="comment">/* We want to offset our children if we're not minimized. IsVisible()</span></div>
<div class="line"><a name="l00771"></a><span class="lineno"> 771</span> <span class="comment"> * will return FALSE if we're minimized, invisible, or the child of</span></div>
<div class="line"><a name="l00772"></a><span class="lineno"> 772</span> <span class="comment"> * a minimized/invisible ancestore.</span></div>
<div class="line"><a name="l00773"></a><span class="lineno"> 773</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00774"></a><span class="lineno"> 774</span>  <span class="keywordflow">if</span> (!TestWF(pwnd, WFMINIMIZED) &&</div>
<div class="line"><a name="l00775"></a><span class="lineno"> 775</span>  (flags & SW_SCROLLCHILDREN) &&</div>
<div class="line"><a name="l00776"></a><span class="lineno"> 776</span>  !fRcScroll) {</div>
<div class="line"><a name="l00777"></a><span class="lineno"> 777</span>  </div>
<div class="line"><a name="l00778"></a><span class="lineno"> 778</span>  fInvisible = TRUE;</div>
<div class="line"><a name="l00779"></a><span class="lineno"> 779</span>  flags &= ~SW_INVALIDATE;</div>
<div class="line"><a name="l00780"></a><span class="lineno"> 780</span>  }</div>
<div class="line"><a name="l00781"></a><span class="lineno"> 781</span>  </div>
<div class="line"><a name="l00782"></a><span class="lineno"> 782</span> DoNothing:</div>
<div class="line"><a name="l00783"></a><span class="lineno"> 783</span>  </div>
<div class="line"><a name="l00784"></a><span class="lineno"> 784</span>  <span class="keywordflow">if</span> (hrgnUpdate != NULL)</div>
<div class="line"><a name="l00785"></a><span class="lineno"> 785</span>  GreSetRectRgn(hrgnUpdate, 0, 0, 0, 0);</div>
<div class="line"><a name="l00786"></a><span class="lineno"> 786</span>  </div>
<div class="line"><a name="l00787"></a><span class="lineno"> 787</span>  <span class="keywordflow">if</span> (HIWORD(prcUpdate) != 0)</div>
<div class="line"><a name="l00788"></a><span class="lineno"> 788</span>  <a class="code" href="a00935.html#a6f9d1e9b327899127c080496900d48d9">SetRectEmpty</a>(prcUpdate);</div>
<div class="line"><a name="l00789"></a><span class="lineno"> 789</span>  </div>
<div class="line"><a name="l00790"></a><span class="lineno"> 790</span>  <span class="keywordflow">if</span> (!fInvisible)</div>
<div class="line"><a name="l00791"></a><span class="lineno"> 791</span>  <span class="keywordflow">return</span> NULLREGION;</div>
<div class="line"><a name="l00792"></a><span class="lineno"> 792</span>  }</div>
<div class="line"><a name="l00793"></a><span class="lineno"> 793</span>  </div>
<div class="line"><a name="l00794"></a><span class="lineno"> 794</span>  <span class="comment">/*</span></div>
<div class="line"><a name="l00795"></a><span class="lineno"> 795</span> <span class="comment"> * Hide the caret.</span></div>
<div class="line"><a name="l00796"></a><span class="lineno"> 796</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00797"></a><span class="lineno"> 797</span>  fHideCaret = FALSE;</div>
<div class="line"><a name="l00798"></a><span class="lineno"> 798</span>  </div>
<div class="line"><a name="l00799"></a><span class="lineno"> 799</span>  <span class="keywordflow">if</span> (!fInvisible) {</div>
<div class="line"><a name="l00800"></a><span class="lineno"> 800</span>  pcaret = &<a class="code" href="a00257.html#a8315d2c807ba18ba9e528c40614b6173">PtiCurrent</a>()-><a class="code" href="a02889.html#aea8fcdf7513cfa8972ff27524296079b">pq</a>-><a class="code" href="a02869.html#ade15a80896abdba1533b909440c29699">caret</a>;</div>
<div class="line"><a name="l00801"></a><span class="lineno"> 801</span>  <span class="keywordflow">if</span> (pcaret-><a class="code" href="a02653.html#a68937d60a6f49b7a8431db62b38ea721">spwnd</a> != NULL && <a class="code" href="a00365.html#abd272d555fe4a691f526815378818677">_IsDescendant</a>(pcaret-><a class="code" href="a02653.html#a68937d60a6f49b7a8431db62b38ea721">spwnd</a>, pwnd)) {</div>
<div class="line"><a name="l00802"></a><span class="lineno"> 802</span>  fHideCaret = TRUE;</div>
<div class="line"><a name="l00803"></a><span class="lineno"> 803</span>  <a class="code" href="a00620.html#a1376ba7ebe3f4b2ab5ebe9fa20b3ed87">InternalHideCaret</a>();</div>
<div class="line"><a name="l00804"></a><span class="lineno"> 804</span>  }</div>
<div class="line"><a name="l00805"></a><span class="lineno"> 805</span>  }</div>
<div class="line"><a name="l00806"></a><span class="lineno"> 806</span>  </div>
<div class="line"><a name="l00807"></a><span class="lineno"> 807</span>  <span class="comment">/*</span></div>
<div class="line"><a name="l00808"></a><span class="lineno"> 808</span> <span class="comment"> * If scrollwindow, and window is clipchildren, use a cache entry.</span></div>
<div class="line"><a name="l00809"></a><span class="lineno"> 809</span> <span class="comment"> * Otherwise, always use a</span></div>
<div class="line"><a name="l00810"></a><span class="lineno"> 810</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00811"></a><span class="lineno"> 811</span> <span class="comment"> * Determine what kind of DC we'll be needing. If the DCX_CACHE bit</span></div>
<div class="line"><a name="l00812"></a><span class="lineno"> 812</span> <span class="comment"> * isn't set, it means that we'll be operating in logical coordinates.</span></div>
<div class="line"><a name="l00813"></a><span class="lineno"> 813</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00814"></a><span class="lineno"> 814</span>  <span class="keywordflow">if</span> (flags & SW_SCROLLWINDOW) {</div>
<div class="line"><a name="l00815"></a><span class="lineno"> 815</span>  </div>
<div class="line"><a name="l00816"></a><span class="lineno"> 816</span>  <span class="comment">/*</span></div>
<div class="line"><a name="l00817"></a><span class="lineno"> 817</span> <span class="comment"> * ScrollWindow() call: use the cache if not OWNDC or CLASSDC.</span></div>
<div class="line"><a name="l00818"></a><span class="lineno"> 818</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00819"></a><span class="lineno"> 819</span>  flagsDCX = DCX_USESTYLE;</div>
<div class="line"><a name="l00820"></a><span class="lineno"> 820</span>  <span class="keywordflow">if</span> (!TestCF(pwnd, CFOWNDC) && !TestCF(pwnd, CFCLASSDC))</div>
<div class="line"><a name="l00821"></a><span class="lineno"> 821</span>  flagsDCX |= DCX_CACHE;</div>
<div class="line"><a name="l00822"></a><span class="lineno"> 822</span>  </div>
<div class="line"><a name="l00823"></a><span class="lineno"> 823</span>  <span class="comment">/*</span></div>
<div class="line"><a name="l00824"></a><span class="lineno"> 824</span> <span class="comment"> * If SW_SCROLLCHILDREN (i.e., lprcScroll == NULL) and CLIPCHILDREN,</span></div>
<div class="line"><a name="l00825"></a><span class="lineno"> 825</span> <span class="comment"> * then use the cache and don't clip children.</span></div>
<div class="line"><a name="l00826"></a><span class="lineno"> 826</span> <span class="comment"> * This is screwy, but 3.0 backward compatible.</span></div>
<div class="line"><a name="l00827"></a><span class="lineno"> 827</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00828"></a><span class="lineno"> 828</span>  <span class="keywordflow">if</span> ((flags & SW_SCROLLCHILDREN) && TestWF(pwnd, WFCLIPCHILDREN))</div>
<div class="line"><a name="l00829"></a><span class="lineno"> 829</span>  flagsDCX |= DCX_NOCLIPCHILDREN | DCX_CACHE;</div>
<div class="line"><a name="l00830"></a><span class="lineno"> 830</span>  </div>
<div class="line"><a name="l00831"></a><span class="lineno"> 831</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00832"></a><span class="lineno"> 832</span>  </div>
<div class="line"><a name="l00833"></a><span class="lineno"> 833</span>  <span class="comment">/*</span></div>
<div class="line"><a name="l00834"></a><span class="lineno"> 834</span> <span class="comment"> * ScrollWindowEx() call: always use the cache</span></div>
<div class="line"><a name="l00835"></a><span class="lineno"> 835</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00836"></a><span class="lineno"> 836</span>  flagsDCX = DCX_USESTYLE | DCX_CACHE;</div>
<div class="line"><a name="l00837"></a><span class="lineno"> 837</span>  </div>
<div class="line"><a name="l00838"></a><span class="lineno"> 838</span>  <span class="comment">/*</span></div>
<div class="line"><a name="l00839"></a><span class="lineno"> 839</span> <span class="comment"> * if SW_SCROLLCHILDREN, always use noclipchildren.</span></div>
<div class="line"><a name="l00840"></a><span class="lineno"> 840</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00841"></a><span class="lineno"> 841</span>  <span class="keywordflow">if</span> (flags & SW_SCROLLCHILDREN)</div>
<div class="line"><a name="l00842"></a><span class="lineno"> 842</span>  flagsDCX |= DCX_NOCLIPCHILDREN;</div>
<div class="line"><a name="l00843"></a><span class="lineno"> 843</span>  }</div>
<div class="line"><a name="l00844"></a><span class="lineno"> 844</span>  </div>
<div class="line"><a name="l00845"></a><span class="lineno"> 845</span>  hdc = <a class="code" href="a00257.html#af4d8743272a8eb22e205078faaed38c5">_GetDCEx</a>(pwnd, NULL, flagsDCX);</div>
<div class="line"><a name="l00846"></a><span class="lineno"> 846</span>  </div>
<div class="line"><a name="l00847"></a><span class="lineno"> 847</span>  <span class="keywordflow">if</span> (flags & SW_INVALIDATE) {</div>
<div class="line"><a name="l00848"></a><span class="lineno"> 848</span>  </div>
<div class="line"><a name="l00849"></a><span class="lineno"> 849</span>  <span class="comment">/*</span></div>
<div class="line"><a name="l00850"></a><span class="lineno"> 850</span> <span class="comment"> * Get device origin while DC is valid, for later offsetting</span></div>
<div class="line"><a name="l00851"></a><span class="lineno"> 851</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00852"></a><span class="lineno"> 852</span>  GreGetDCOrg(hdc, &pt);</div>
<div class="line"><a name="l00853"></a><span class="lineno"> 853</span>  </div>
<div class="line"><a name="l00854"></a><span class="lineno"> 854</span>  <span class="comment">/*</span></div>
<div class="line"><a name="l00855"></a><span class="lineno"> 855</span> <span class="comment"> * If the user didn't give us a region to use, use hrgnSW.</span></div>
<div class="line"><a name="l00856"></a><span class="lineno"> 856</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00857"></a><span class="lineno"> 857</span>  <span class="keywordflow">if</span> (hrgnUpdate == NULL)</div>
<div class="line"><a name="l00858"></a><span class="lineno"> 858</span>  hrgnUpdate = <a class="code" href="a03257.html#a11a75d31dd330968778abca1b9ef9906">hrgnSW</a>;</div>
<div class="line"><a name="l00859"></a><span class="lineno"> 859</span>  }</div>
<div class="line"><a name="l00860"></a><span class="lineno"> 860</span>  </div>
<div class="line"><a name="l00861"></a><span class="lineno"> 861</span>  <span class="comment">/*</span></div>
<div class="line"><a name="l00862"></a><span class="lineno"> 862</span> <span class="comment"> * The DC will be in some logical coordinate system if OWNDC or CLASSDC.</span></div>
<div class="line"><a name="l00863"></a><span class="lineno"> 863</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00864"></a><span class="lineno"> 864</span>  <span class="keywordflow">if</span> (!fRcScroll) {</div>
<div class="line"><a name="l00865"></a><span class="lineno"> 865</span>  prcScroll = &rcSrc;</div>
<div class="line"><a name="l00866"></a><span class="lineno"> 866</span>  </div>
<div class="line"><a name="l00867"></a><span class="lineno"> 867</span>  <span class="comment">/*</span></div>
<div class="line"><a name="l00868"></a><span class="lineno"> 868</span> <span class="comment"> * IMPORTANT:</span></div>
<div class="line"><a name="l00869"></a><span class="lineno"> 869</span> <span class="comment"> * We have to use CopyOffsetRect() here because GetClientRect() gives</span></div>
<div class="line"><a name="l00870"></a><span class="lineno"> 870</span> <span class="comment"> * unreliable results for minimized windows. 3.1 dudes get told that</span></div>
<div class="line"><a name="l00871"></a><span class="lineno"> 871</span> <span class="comment"> * their client is non-empty, for compatibility reasons.</span></div>
<div class="line"><a name="l00872"></a><span class="lineno"> 872</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00873"></a><span class="lineno"> 873</span>  <a class="code" href="a00365.html#ac638a1ce39dd10773c0133549503776e">CopyOffsetRect</a>(prcScroll,</div>
<div class="line"><a name="l00874"></a><span class="lineno"> 874</span>  &pwnd-><a class="code" href="a02581.html#a17d59d04094aef8b577c0aa781cdf2c6">rcClient</a>,</div>
<div class="line"><a name="l00875"></a><span class="lineno"> 875</span>  -pwnd-><a class="code" href="a02581.html#a17d59d04094aef8b577c0aa781cdf2c6">rcClient</a>.left,</div>
<div class="line"><a name="l00876"></a><span class="lineno"> 876</span>  -pwnd-><a class="code" href="a02581.html#a17d59d04094aef8b577c0aa781cdf2c6">rcClient</a>.top);</div>
<div class="line"><a name="l00877"></a><span class="lineno"> 877</span>  </div>
<div class="line"><a name="l00878"></a><span class="lineno"> 878</span>  <span class="comment">/*</span></div>
<div class="line"><a name="l00879"></a><span class="lineno"> 879</span> <span class="comment"> * If the DC might be a screwy one, then map the</span></div>
<div class="line"><a name="l00880"></a><span class="lineno"> 880</span> <span class="comment"> * rect to logical units.</span></div>
<div class="line"><a name="l00881"></a><span class="lineno"> 881</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00882"></a><span class="lineno"> 882</span>  <span class="keywordflow">if</span> (!(flagsDCX & DCX_CACHE))</div>
<div class="line"><a name="l00883"></a><span class="lineno"> 883</span>  GreDPtoLP(hdc, (LPPOINT)&rcSrc, 2);</div>
<div class="line"><a name="l00884"></a><span class="lineno"> 884</span>  }</div>
<div class="line"><a name="l00885"></a><span class="lineno"> 885</span>  </div>
<div class="line"><a name="l00886"></a><span class="lineno"> 886</span>  <span class="comment">/*</span></div>
<div class="line"><a name="l00887"></a><span class="lineno"> 887</span> <span class="comment"> * If the DC is in logical coordinates, map *prcScroll and dx, dy</span></div>
<div class="line"><a name="l00888"></a><span class="lineno"> 888</span> <span class="comment"> * to device units for use later.</span></div>
<div class="line"><a name="l00889"></a><span class="lineno"> 889</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00890"></a><span class="lineno"> 890</span>  dxDev = dx;</div>
<div class="line"><a name="l00891"></a><span class="lineno"> 891</span>  dyDev = dy;</div>
<div class="line"><a name="l00892"></a><span class="lineno"> 892</span>  rcSrcDev = *prcScroll;</div>
<div class="line"><a name="l00893"></a><span class="lineno"> 893</span>  </div>
<div class="line"><a name="l00894"></a><span class="lineno"> 894</span>  <span class="keywordflow">if</span> (!(flagsDCX & DCX_CACHE)) {</div>
<div class="line"><a name="l00895"></a><span class="lineno"> 895</span>  </div>
<div class="line"><a name="l00896"></a><span class="lineno"> 896</span>  POINT rgpt[2];</div>
<div class="line"><a name="l00897"></a><span class="lineno"> 897</span>  </div>
<div class="line"><a name="l00898"></a><span class="lineno"> 898</span>  GreLPtoDP(hdc, (POINT FAR*)&rcSrcDev, 2);</div>
<div class="line"><a name="l00899"></a><span class="lineno"> 899</span>  </div>
<div class="line"><a name="l00900"></a><span class="lineno"> 900</span>  <span class="comment">/*</span></div>
<div class="line"><a name="l00901"></a><span class="lineno"> 901</span> <span class="comment"> * The delta values must be treated as a vector from</span></div>
<div class="line"><a name="l00902"></a><span class="lineno"> 902</span> <span class="comment"> * the point (0, 0) to (dx, dy). Scale it as such, then</span></div>
<div class="line"><a name="l00903"></a><span class="lineno"> 903</span> <span class="comment"> * compute the difference. This handles flipped coordinate systems.</span></div>
<div class="line"><a name="l00904"></a><span class="lineno"> 904</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00905"></a><span class="lineno"> 905</span>  rgpt[0].x = rgpt[0].y = 0;</div>
<div class="line"><a name="l00906"></a><span class="lineno"> 906</span>  rgpt[1].x = dx;</div>
<div class="line"><a name="l00907"></a><span class="lineno"> 907</span>  rgpt[1].y = dy;</div>
<div class="line"><a name="l00908"></a><span class="lineno"> 908</span>  </div>
<div class="line"><a name="l00909"></a><span class="lineno"> 909</span>  GreLPtoDP(hdc, rgpt, 2);</div>
<div class="line"><a name="l00910"></a><span class="lineno"> 910</span>  </div>
<div class="line"><a name="l00911"></a><span class="lineno"> 911</span>  dxDev = rgpt[1].x - rgpt[0].x;</div>
<div class="line"><a name="l00912"></a><span class="lineno"> 912</span>  dyDev = rgpt[1].y - rgpt[0].y;</div>
<div class="line"><a name="l00913"></a><span class="lineno"> 913</span>  }</div>
<div class="line"><a name="l00914"></a><span class="lineno"> 914</span>  </div>
<div class="line"><a name="l00915"></a><span class="lineno"> 915</span>  <span class="keywordflow">if</span> (fInvisible)</div>
<div class="line"><a name="l00916"></a><span class="lineno"> 916</span>  code = NULLREGION;</div>
<div class="line"><a name="l00917"></a><span class="lineno"> 917</span>  <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00918"></a><span class="lineno"> 918</span>  </div>
<div class="line"><a name="l00919"></a><span class="lineno"> 919</span>  <a class="code" href="a03257.html#a22582da0c3535d7a4fc98d7a7b03cc18">hrgnInvalid</a> = pwnd-><a class="code" href="a02581.html#a79d8579e0cf1a8fb985bc709e08f61ac">hrgnUpdate</a>;</div>
<div class="line"><a name="l00920"></a><span class="lineno"> 920</span>  <span class="keywordflow">if</span> ((flags & SW_SCROLLWINDOW) && !TestWF(pwnd, WFWIN31COMPAT)) {</div>
<div class="line"><a name="l00921"></a><span class="lineno"> 921</span>  <span class="comment">/*</span></div>
<div class="line"><a name="l00922"></a><span class="lineno"> 922</span> <span class="comment"> * 3.0 Backward compatibility hack:</span></div>
<div class="line"><a name="l00923"></a><span class="lineno"> 923</span> <span class="comment"> * The following incorrect code is what 3.0 used to do, and</span></div>
<div class="line"><a name="l00924"></a><span class="lineno"> 924</span> <span class="comment"> * there are apps such as Finale and Scrapbook+ that have worked</span></div>
<div class="line"><a name="l00925"></a><span class="lineno"> 925</span> <span class="comment"> * around this bug in ways that don't work with the "correct" code.</span></div>
<div class="line"><a name="l00926"></a><span class="lineno"> 926</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00927"></a><span class="lineno"> 927</span>  <span class="keywordflow">if</span> (pwnd-><a class="code" href="a02581.html#a79d8579e0cf1a8fb985bc709e08f61ac">hrgnUpdate</a> > MAXREGION) {</div>
<div class="line"><a name="l00928"></a><span class="lineno"> 928</span>  RECT rc;</div>
<div class="line"><a name="l00929"></a><span class="lineno"> 929</span>  </div>
<div class="line"><a name="l00930"></a><span class="lineno"> 930</span>  GreGetRgnBox(pwnd-><a class="code" href="a02581.html#a79d8579e0cf1a8fb985bc709e08f61ac">hrgnUpdate</a>, &rc);</div>
<div class="line"><a name="l00931"></a><span class="lineno"> 931</span>  <a class="code" href="a00935.html#a59a3cfdacf3d0e5d10c20abee032cfc6">OffsetRect</a>(&rc,</div>
<div class="line"><a name="l00932"></a><span class="lineno"> 932</span>  dxDev - pwnd-><a class="code" href="a02581.html#a17d59d04094aef8b577c0aa781cdf2c6">rcClient</a>.left,</div>
<div class="line"><a name="l00933"></a><span class="lineno"> 933</span>  dyDev - pwnd-><a class="code" href="a02581.html#a17d59d04094aef8b577c0aa781cdf2c6">rcClient</a>.top);</div>
<div class="line"><a name="l00934"></a><span class="lineno"> 934</span>  </div>
<div class="line"><a name="l00935"></a><span class="lineno"> 935</span>  <a class="code" href="a00896.html#a487301eed51abdcd2b3920954855e848">xxxRedrawWindow</a>(pwnd,</div>
<div class="line"><a name="l00936"></a><span class="lineno"> 936</span>  &rc, NULL,</div>
<div class="line"><a name="l00937"></a><span class="lineno"> 937</span>  RDW_INVALIDATE | RDW_ERASE | RDW_ALLCHILDREN);</div>
<div class="line"><a name="l00938"></a><span class="lineno"> 938</span>  }</div>
<div class="line"><a name="l00939"></a><span class="lineno"> 939</span>  </div>
<div class="line"><a name="l00940"></a><span class="lineno"> 940</span>  <a class="code" href="a03257.html#a22582da0c3535d7a4fc98d7a7b03cc18">hrgnInvalid</a> = NULL;</div>
<div class="line"><a name="l00941"></a><span class="lineno"> 941</span>  }</div>
<div class="line"><a name="l00942"></a><span class="lineno"> 942</span>  </div>
<div class="line"><a name="l00943"></a><span class="lineno"> 943</span>  code = <a class="code" href="a00836.html#a9c15f7cde7f639a841e61fa332a07992">InternalScrollDC</a>(hdc,</div>
<div class="line"><a name="l00944"></a><span class="lineno"> 944</span>  dx,</div>
<div class="line"><a name="l00945"></a><span class="lineno"> 945</span>  dy,</div>
<div class="line"><a name="l00946"></a><span class="lineno"> 946</span>  prcScroll,</div>
<div class="line"><a name="l00947"></a><span class="lineno"> 947</span>  prcClip,</div>
<div class="line"><a name="l00948"></a><span class="lineno"> 948</span>  <a class="code" href="a03257.html#a22582da0c3535d7a4fc98d7a7b03cc18">hrgnInvalid</a>,</div>
<div class="line"><a name="l00949"></a><span class="lineno"> 949</span>  hrgnUpdate,</div>
<div class="line"><a name="l00950"></a><span class="lineno"> 950</span>  prcUpdate,</div>
<div class="line"><a name="l00951"></a><span class="lineno"> 951</span>  !(flagsDCX & DCX_CACHE));</div>
<div class="line"><a name="l00952"></a><span class="lineno"> 952</span>  }</div>
<div class="line"><a name="l00953"></a><span class="lineno"> 953</span>  </div>
<div class="line"><a name="l00954"></a><span class="lineno"> 954</span>  <span class="comment">/*</span></div>
<div class="line"><a name="l00955"></a><span class="lineno"> 955</span> <span class="comment"> * Release the hdc we used.</span></div>
<div class="line"><a name="l00956"></a><span class="lineno"> 956</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00957"></a><span class="lineno"> 957</span>  <a class="code" href="a00644.html#a1ec030500a19f775519fbaf16c15f814">_ReleaseDC</a>(hdc);</div>
<div class="line"><a name="l00958"></a><span class="lineno"> 958</span>  </div>
<div class="line"><a name="l00959"></a><span class="lineno"> 959</span>  <span class="comment">/*</span></div>
<div class="line"><a name="l00960"></a><span class="lineno"> 960</span> <span class="comment"> * Check the union of the src and dst rectangle against any SPBs.</span></div>
<div class="line"><a name="l00961"></a><span class="lineno"> 961</span> <span class="comment"> * We do this because the window</span></div>
<div class="line"><a name="l00962"></a><span class="lineno"> 962</span> <span class="comment"> * might be completely obscured by some window with an SPB, but</span></div>
<div class="line"><a name="l00963"></a><span class="lineno"> 963</span> <span class="comment"> * since we're completely covered no BitBlt call will be made</span></div>
<div class="line"><a name="l00964"></a><span class="lineno"> 964</span> <span class="comment"> * to accumulate bounds in that area.</span></div>
<div class="line"><a name="l00965"></a><span class="lineno"> 965</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00966"></a><span class="lineno"> 966</span>  <span class="keywordflow">if</span> (!fInvisible && AnySpbs()) {</div>
<div class="line"><a name="l00967"></a><span class="lineno"> 967</span>  </div>
<div class="line"><a name="l00968"></a><span class="lineno"> 968</span>  <span class="keywordflow">if</span> (fRcScroll) {</div>
<div class="line"><a name="l00969"></a><span class="lineno"> 969</span>  rcSrc = rcSrcDev;</div>
<div class="line"><a name="l00970"></a><span class="lineno"> 970</span>  <a class="code" href="a00935.html#a59a3cfdacf3d0e5d10c20abee032cfc6">OffsetRect</a>(&rcSrc, pwnd-><a class="code" href="a02581.html#a17d59d04094aef8b577c0aa781cdf2c6">rcClient</a>.left, pwnd-><a class="code" href="a02581.html#a17d59d04094aef8b577c0aa781cdf2c6">rcClient</a>.top);</div>
<div class="line"><a name="l00971"></a><span class="lineno"> 971</span>  </div>
<div class="line"><a name="l00972"></a><span class="lineno"> 972</span>  rcSpb = rcSrc;</div>
<div class="line"><a name="l00973"></a><span class="lineno"> 973</span>  <a class="code" href="a00935.html#a59a3cfdacf3d0e5d10c20abee032cfc6">OffsetRect</a>(&rcSpb, dxDev, dyDev);</div>
<div class="line"><a name="l00974"></a><span class="lineno"> 974</span>  <a class="code" href="a00935.html#ae447c29296398f6e6ae0f28d192e606d">UnionRect</a>(&rcSpb, &rcSpb, &rcSrc);</div>
<div class="line"><a name="l00975"></a><span class="lineno"> 975</span>  </div>
<div class="line"><a name="l00976"></a><span class="lineno"> 976</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00977"></a><span class="lineno"> 977</span>  </div>
<div class="line"><a name="l00978"></a><span class="lineno"> 978</span>  <span class="comment">/*</span></div>
<div class="line"><a name="l00979"></a><span class="lineno"> 979</span> <span class="comment"> * Use the entire client area.</span></div>
<div class="line"><a name="l00980"></a><span class="lineno"> 980</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00981"></a><span class="lineno"> 981</span>  rcSpb = pwnd-><a class="code" href="a02581.html#a17d59d04094aef8b577c0aa781cdf2c6">rcClient</a>;</div>
<div class="line"><a name="l00982"></a><span class="lineno"> 982</span>  }</div>
<div class="line"><a name="l00983"></a><span class="lineno"> 983</span>  </div>
<div class="line"><a name="l00984"></a><span class="lineno"> 984</span>  <a class="code" href="a00860.html#a682e7a615d4877278df80629d78c3081">SpbCheckRect</a>(pwnd, &rcSpb, 0);</div>
<div class="line"><a name="l00985"></a><span class="lineno"> 985</span>  }</div>
<div class="line"><a name="l00986"></a><span class="lineno"> 986</span>  </div>
<div class="line"><a name="l00987"></a><span class="lineno"> 987</span>  <span class="comment">/*</span></div>
<div class="line"><a name="l00988"></a><span class="lineno"> 988</span> <span class="comment"> * If this guy wants to scroll his children, go at it. Only scroll those</span></div>
<div class="line"><a name="l00989"></a><span class="lineno"> 989</span> <span class="comment"> * children intersecting prcScroll. Then invalidate any vis rgns</span></div>
<div class="line"><a name="l00990"></a><span class="lineno"> 990</span> <span class="comment"> * calculated for these child windows.</span></div>
<div class="line"><a name="l00991"></a><span class="lineno"> 991</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00992"></a><span class="lineno"> 992</span>  <span class="keywordflow">if</span> (flags & SW_SCROLLCHILDREN) {</div>
<div class="line"><a name="l00993"></a><span class="lineno"> 993</span>  </div>
<div class="line"><a name="l00994"></a><span class="lineno"> 994</span>  RECT rc;</div>
<div class="line"><a name="l00995"></a><span class="lineno"> 995</span>  </div>
<div class="line"><a name="l00996"></a><span class="lineno"> 996</span>  <span class="comment">/*</span></div>
<div class="line"><a name="l00997"></a><span class="lineno"> 997</span> <span class="comment"> * If this window has the caret then offset it if:</span></div>
<div class="line"><a name="l00998"></a><span class="lineno"> 998</span> <span class="comment"> * a) The whole window is scrolling</span></div>
<div class="line"><a name="l00999"></a><span class="lineno"> 999</span> <span class="comment"> * b) The rectangle scrolled contains the caret rectangle</span></div>
<div class="line"><a name="l01000"></a><span class="lineno"> 1000</span> <span class="comment"> */</span></div>
<div class="line"><a name="l01001"></a><span class="lineno"> 1001</span>  <span class="keywordflow">if</span> (!fInvisible && (pwnd == pcaret-><a class="code" href="a02653.html#a68937d60a6f49b7a8431db62b38ea721">spwnd</a>)) {</div>
<div class="line"><a name="l01002"></a><span class="lineno"> 1002</span>  </div>
<div class="line"><a name="l01003"></a><span class="lineno"> 1003</span>  <span class="keywordflow">if</span> (fRcScroll)</div>
<div class="line"><a name="l01004"></a><span class="lineno"> 1004</span>  <a class="code" href="a00935.html#a479bbe69c871894f6ca23dfa237481ad">SetRect</a>(&rc,</div>
<div class="line"><a name="l01005"></a><span class="lineno"> 1005</span>  pcaret-><a class="code" href="a02653.html#a6150e0515f7202e2fb518f7206ed97dc">x</a>,</div>
<div class="line"><a name="l01006"></a><span class="lineno"> 1006</span>  pcaret-><a class="code" href="a02653.html#a0a2f84ed7838f07779ae24c5a9086d33">y</a>,</div>
<div class="line"><a name="l01007"></a><span class="lineno"> 1007</span>  pcaret-><a class="code" href="a02653.html#a6150e0515f7202e2fb518f7206ed97dc">x</a> + pcaret-><a class="code" href="a02653.html#af905a9989361d094908ad04e08f6429d">cx</a>,</div>
<div class="line"><a name="l01008"></a><span class="lineno"> 1008</span>  pcaret-><a class="code" href="a02653.html#a0a2f84ed7838f07779ae24c5a9086d33">y</a> + pcaret-><a class="code" href="a02653.html#ad36501a70b25e18bcf48dd6e03392305">cy</a>);</div>
<div class="line"><a name="l01009"></a><span class="lineno"> 1009</span>  </div>
<div class="line"><a name="l01010"></a><span class="lineno"> 1010</span>  <span class="keywordflow">if</span> (!fRcScroll || <a class="code" href="a00935.html#a1c87c29903dd37145cd93b64140a5d3a">IntersectRect</a>(&rc, &rc, &rcSrcDev)) {</div>
<div class="line"><a name="l01011"></a><span class="lineno"> 1011</span>  pcaret-><a class="code" href="a02653.html#a6150e0515f7202e2fb518f7206ed97dc">x</a> += dxDev;</div>
<div class="line"><a name="l01012"></a><span class="lineno"> 1012</span>  pcaret-><a class="code" href="a02653.html#a0a2f84ed7838f07779ae24c5a9086d33">y</a> += dyDev;</div>
<div class="line"><a name="l01013"></a><span class="lineno"> 1013</span>  }</div>
<div class="line"><a name="l01014"></a><span class="lineno"> 1014</span>  }</div>
<div class="line"><a name="l01015"></a><span class="lineno"> 1015</span>  </div>
<div class="line"><a name="l01016"></a><span class="lineno"> 1016</span>  <span class="keywordflow">if</span> (fRcScroll) {</div>
<div class="line"><a name="l01017"></a><span class="lineno"> 1017</span>  </div>
<div class="line"><a name="l01018"></a><span class="lineno"> 1018</span>  <span class="comment">/*</span></div>
<div class="line"><a name="l01019"></a><span class="lineno"> 1019</span> <span class="comment"> * Create a copy of prcScroll and map to absolute coordinates...</span></div>
<div class="line"><a name="l01020"></a><span class="lineno"> 1020</span> <span class="comment"> */</span></div>
<div class="line"><a name="l01021"></a><span class="lineno"> 1021</span>  rc = rcSrcDev;</div>
<div class="line"><a name="l01022"></a><span class="lineno"> 1022</span>  <a class="code" href="a00935.html#a59a3cfdacf3d0e5d10c20abee032cfc6">OffsetRect</a>(&rc, pwnd-><a class="code" href="a02581.html#a17d59d04094aef8b577c0aa781cdf2c6">rcClient</a>.left, pwnd-><a class="code" href="a02581.html#a17d59d04094aef8b577c0aa781cdf2c6">rcClient</a>.top);</div>
<div class="line"><a name="l01023"></a><span class="lineno"> 1023</span>  }</div>
<div class="line"><a name="l01024"></a><span class="lineno"> 1024</span>  </div>
<div class="line"><a name="l01025"></a><span class="lineno"> 1025</span>  <span class="keywordflow">if</span> (pwnd-><a class="code" href="a02581.html#a6171c9000ea2060597a9bcf498ee0316">spwndChild</a>) {</div>
<div class="line"><a name="l01026"></a><span class="lineno"> 1026</span>  </div>
<div class="line"><a name="l01027"></a><span class="lineno"> 1027</span>  <a class="code" href="a00872.html#a6790f24888ee57e445fd3eb5b90fae39">OffsetChildren</a>(pwnd,</div>
<div class="line"><a name="l01028"></a><span class="lineno"> 1028</span>  dxDev,</div>
<div class="line"><a name="l01029"></a><span class="lineno"> 1029</span>  dyDev,</div>
<div class="line"><a name="l01030"></a><span class="lineno"> 1030</span>  (fRcScroll ? (LPRECT)&rc : NULL));</div>
<div class="line"><a name="l01031"></a><span class="lineno"> 1031</span>  </div>
<div class="line"><a name="l01032"></a><span class="lineno"> 1032</span>  <span class="comment">/*</span></div>
<div class="line"><a name="l01033"></a><span class="lineno"> 1033</span> <span class="comment"> * If we're clipchildren, then shuffling our children</span></div>
<div class="line"><a name="l01034"></a><span class="lineno"> 1034</span> <span class="comment"> * will affect our client visrgn (but not our window visrgn).</span></div>
<div class="line"><a name="l01035"></a><span class="lineno"> 1035</span> <span class="comment"> * Otherwise, only our children's</span></div>
<div class="line"><a name="l01036"></a><span class="lineno"> 1036</span> <span class="comment"> * visrgns were affected by the scroll.</span></div>
<div class="line"><a name="l01037"></a><span class="lineno"> 1037</span> <span class="comment"> */</span></div>
<div class="line"><a name="l01038"></a><span class="lineno"> 1038</span>  <a class="code" href="a00644.html#a69728f013275d0f4332dded4eb2432a3">InvalidateDCCache</a>(pwnd,</div>
<div class="line"><a name="l01039"></a><span class="lineno"> 1039</span>  TestWF(pwnd, WFCLIPCHILDREN) ?</div>
<div class="line"><a name="l01040"></a><span class="lineno"> 1040</span>  IDC_CLIENTONLY : IDC_CHILDRENONLY);</div>
<div class="line"><a name="l01041"></a><span class="lineno"> 1041</span>  </div>
<div class="line"><a name="l01042"></a><span class="lineno"> 1042</span>  }</div>
<div class="line"><a name="l01043"></a><span class="lineno"> 1043</span>  }</div>
<div class="line"><a name="l01044"></a><span class="lineno"> 1044</span>  </div>
<div class="line"><a name="l01045"></a><span class="lineno"> 1045</span>  <span class="keywordflow">if</span> (flags & SW_INVALIDATE) {</div>
<div class="line"><a name="l01046"></a><span class="lineno"> 1046</span>  </div>
<div class="line"><a name="l01047"></a><span class="lineno"> 1047</span>  <span class="comment">/*</span></div>
<div class="line"><a name="l01048"></a><span class="lineno"> 1048</span> <span class="comment"> * If the caller supplied a region, invalidate using a copy,</span></div>
<div class="line"><a name="l01049"></a><span class="lineno"> 1049</span> <span class="comment"> * because InternalInvalidate may trash the passed-in region.</span></div>
<div class="line"><a name="l01050"></a><span class="lineno"> 1050</span> <span class="comment"> */</span></div>
<div class="line"><a name="l01051"></a><span class="lineno"> 1051</span>  <span class="keywordflow">if</span> (hrgnUpdate != <a class="code" href="a03257.html#a11a75d31dd330968778abca1b9ef9906">hrgnSW</a>)</div>
<div class="line"><a name="l01052"></a><span class="lineno"> 1052</span>  CopyRgn(<a class="code" href="a03257.html#a11a75d31dd330968778abca1b9ef9906">hrgnSW</a>, hrgnUpdate);</div>
<div class="line"><a name="l01053"></a><span class="lineno"> 1053</span>  </div>
<div class="line"><a name="l01054"></a><span class="lineno"> 1054</span>  <span class="comment">/*</span></div>
<div class="line"><a name="l01055"></a><span class="lineno"> 1055</span> <span class="comment"> * Make hrgnSW screen-relative before invalidation...</span></div>
<div class="line"><a name="l01056"></a><span class="lineno"> 1056</span> <span class="comment"> */</span></div>
<div class="line"><a name="l01057"></a><span class="lineno"> 1057</span>  GreOffsetRgn(<a class="code" href="a03257.html#a11a75d31dd330968778abca1b9ef9906">hrgnSW</a>, pt.x, pt.y);</div>
<div class="line"><a name="l01058"></a><span class="lineno"> 1058</span>  </div>
<div class="line"><a name="l01059"></a><span class="lineno"> 1059</span>  <a class="code" href="a00896.html#af920796d5612f833ca2179b07a008e69">xxxInternalInvalidate</a>(</div>
<div class="line"><a name="l01060"></a><span class="lineno"> 1060</span>  pwnd,</div>
<div class="line"><a name="l01061"></a><span class="lineno"> 1061</span>  <a class="code" href="a03257.html#a11a75d31dd330968778abca1b9ef9906">hrgnSW</a>,</div>
<div class="line"><a name="l01062"></a><span class="lineno"> 1062</span>  (flags & SW_ERASE) ?</div>
<div class="line"><a name="l01063"></a><span class="lineno"> 1063</span>  (RDW_INVALIDATE | RDW_ALLCHILDREN | RDW_ERASE) :</div>
<div class="line"><a name="l01064"></a><span class="lineno"> 1064</span>  (RDW_INVALIDATE | RDW_ALLCHILDREN));</div>
<div class="line"><a name="l01065"></a><span class="lineno"> 1065</span>  }</div>
<div class="line"><a name="l01066"></a><span class="lineno"> 1066</span>  </div>
<div class="line"><a name="l01067"></a><span class="lineno"> 1067</span>  <span class="comment">/*</span></div>
<div class="line"><a name="l01068"></a><span class="lineno"> 1068</span> <span class="comment"> * Send child move messages if needed.</span></div>
<div class="line"><a name="l01069"></a><span class="lineno"> 1069</span> <span class="comment"> */</span></div>
<div class="line"><a name="l01070"></a><span class="lineno"> 1070</span>  <span class="keywordflow">if</span> (flags & SW_SCROLLCHILDREN) {</div>
<div class="line"><a name="l01071"></a><span class="lineno"> 1071</span>  </div>
<div class="line"><a name="l01072"></a><span class="lineno"> 1072</span>  <a class="code" href="a02581.html">PWND</a> pwndChild;</div>
<div class="line"><a name="l01073"></a><span class="lineno"> 1073</span>  RECT rc;</div>
<div class="line"><a name="l01074"></a><span class="lineno"> 1074</span>  RECT rcScrolledChildren;</div>
<div class="line"><a name="l01075"></a><span class="lineno"> 1075</span>  </div>
<div class="line"><a name="l01076"></a><span class="lineno"> 1076</span>  <span class="comment">/*</span></div>
<div class="line"><a name="l01077"></a><span class="lineno"> 1077</span> <span class="comment"> * NOTE: the following code will send MOVE messages</span></div>
<div class="line"><a name="l01078"></a><span class="lineno"> 1078</span> <span class="comment"> * to windows that didn't move but were in the source rectangle.</span></div>
<div class="line"><a name="l01079"></a><span class="lineno"> 1079</span> <span class="comment"> * This is not a big deal, and definitely not worth fixing.</span></div>
<div class="line"><a name="l01080"></a><span class="lineno"> 1080</span> <span class="comment"> */</span></div>
<div class="line"><a name="l01081"></a><span class="lineno"> 1081</span>  <span class="keywordflow">if</span> (fRcScroll) {</div>
<div class="line"><a name="l01082"></a><span class="lineno"> 1082</span>  rcScrolledChildren = rcSrcDev;</div>
<div class="line"><a name="l01083"></a><span class="lineno"> 1083</span>  <a class="code" href="a00935.html#a59a3cfdacf3d0e5d10c20abee032cfc6">OffsetRect</a>(&rcScrolledChildren,</div>
<div class="line"><a name="l01084"></a><span class="lineno"> 1084</span>  dxDev + pwnd-><a class="code" href="a02581.html#a6053af0b243b6737640988eb63081de3">spwndParent</a>-><a class="code" href="a02581.html#a17d59d04094aef8b577c0aa781cdf2c6">rcClient</a>.left,</div>
<div class="line"><a name="l01085"></a><span class="lineno"> 1085</span>  dyDev + pwnd-><a class="code" href="a02581.html#a6053af0b243b6737640988eb63081de3">spwndParent</a>-><a class="code" href="a02581.html#a17d59d04094aef8b577c0aa781cdf2c6">rcClient</a>.top);</div>
<div class="line"><a name="l01086"></a><span class="lineno"> 1086</span>  }</div>
<div class="line"><a name="l01087"></a><span class="lineno"> 1087</span>  </div>
<div class="line"><a name="l01088"></a><span class="lineno"> 1088</span>  pwndChild = pwnd-><a class="code" href="a02581.html#a6171c9000ea2060597a9bcf498ee0316">spwndChild</a>;</div>
<div class="line"><a name="l01089"></a><span class="lineno"> 1089</span>  <span class="keywordflow">while</span> (pwndChild != NULL) {</div>
<div class="line"><a name="l01090"></a><span class="lineno"> 1090</span>  </div>
<div class="line"><a name="l01091"></a><span class="lineno"> 1091</span>  ThreadLockAlways(pwndChild, &tlpwndChild);</div>
<div class="line"><a name="l01092"></a><span class="lineno"> 1092</span>  </div>
<div class="line"><a name="l01093"></a><span class="lineno"> 1093</span>  <span class="keywordflow">if</span> (!fRcScroll ||</div>
<div class="line"><a name="l01094"></a><span class="lineno"> 1094</span>  <a class="code" href="a00935.html#a1c87c29903dd37145cd93b64140a5d3a">IntersectRect</a>(&rc, &rcScrolledChildren, &pwndChild-><a class="code" href="a02581.html#a2778d611c2b27395e559c94d05732e1f">rcWindow</a>)) {</div>
<div class="line"><a name="l01095"></a><span class="lineno"> 1095</span>  </div>
<div class="line"><a name="l01096"></a><span class="lineno"> 1096</span>  <span class="comment">/*</span></div>
<div class="line"><a name="l01097"></a><span class="lineno"> 1097</span> <span class="comment"> * NOTE: Win 3.0 and below passed wParam == TRUE here.</span></div>
<div class="line"><a name="l01098"></a><span class="lineno"> 1098</span> <span class="comment"> * This was not documented or used, so it was changed</span></div>
<div class="line"><a name="l01099"></a><span class="lineno"> 1099</span> <span class="comment"> * to be consistent with the documentation.</span></div>
<div class="line"><a name="l01100"></a><span class="lineno"> 1100</span> <span class="comment"> */</span></div>
<div class="line"><a name="l01101"></a><span class="lineno"> 1101</span>  <a class="code" href="a00842.html#a69cf2e14dcefd941469ad5126e40f79a">xxxSendMessage</a>(</div>
<div class="line"><a name="l01102"></a><span class="lineno"> 1102</span>  pwndChild,</div>
<div class="line"><a name="l01103"></a><span class="lineno"> 1103</span>  WM_MOVE,</div>
<div class="line"><a name="l01104"></a><span class="lineno"> 1104</span>  0,</div>
<div class="line"><a name="l01105"></a><span class="lineno"> 1105</span>  MAKELONG(pwndChild-><a class="code" href="a02581.html#a17d59d04094aef8b577c0aa781cdf2c6">rcClient</a>.left - pwnd-><a class="code" href="a02581.html#a17d59d04094aef8b577c0aa781cdf2c6">rcClient</a>.left,</div>
<div class="line"><a name="l01106"></a><span class="lineno"> 1106</span>  pwndChild-><a class="code" href="a02581.html#a17d59d04094aef8b577c0aa781cdf2c6">rcClient</a>.top - pwnd-><a class="code" href="a02581.html#a17d59d04094aef8b577c0aa781cdf2c6">rcClient</a>.top));</div>
<div class="line"><a name="l01107"></a><span class="lineno"> 1107</span>  }</div>
<div class="line"><a name="l01108"></a><span class="lineno"> 1108</span>  </div>
<div class="line"><a name="l01109"></a><span class="lineno"> 1109</span>  pwndChild = pwndChild-><a class="code" href="a02581.html#af729b7de7a8fb84b70b70c4b401ce789">spwndNext</a>;</div>
<div class="line"><a name="l01110"></a><span class="lineno"> 1110</span>  </div>
<div class="line"><a name="l01111"></a><span class="lineno"> 1111</span>  ThreadUnlock(&tlpwndChild);</div>
<div class="line"><a name="l01112"></a><span class="lineno"> 1112</span>  }</div>
<div class="line"><a name="l01113"></a><span class="lineno"> 1113</span>  }</div>
<div class="line"><a name="l01114"></a><span class="lineno"> 1114</span>  </div>
<div class="line"><a name="l01115"></a><span class="lineno"> 1115</span>  <span class="keywordflow">if</span> (fHideCaret) {</div>
<div class="line"><a name="l01116"></a><span class="lineno"> 1116</span>  </div>
<div class="line"><a name="l01117"></a><span class="lineno"> 1117</span>  <span class="comment">/*</span></div>
<div class="line"><a name="l01118"></a><span class="lineno"> 1118</span> <span class="comment"> * Show the caret again.</span></div>
<div class="line"><a name="l01119"></a><span class="lineno"> 1119</span> <span class="comment"> */</span></div>
<div class="line"><a name="l01120"></a><span class="lineno"> 1120</span>  <a class="code" href="a00620.html#abaf8f946537e0303f6ba99f21d716670">InternalShowCaret</a>();</div>
<div class="line"><a name="l01121"></a><span class="lineno"> 1121</span>  }</div>
<div class="line"><a name="l01122"></a><span class="lineno"> 1122</span>  </div>
<div class="line"><a name="l01123"></a><span class="lineno"> 1123</span>  <span class="comment">/*</span></div>
<div class="line"><a name="l01124"></a><span class="lineno"> 1124</span> <span class="comment"> * Return the region code.</span></div>
<div class="line"><a name="l01125"></a><span class="lineno"> 1125</span> <span class="comment"> */</span></div>
<div class="line"><a name="l01126"></a><span class="lineno"> 1126</span>  <span class="keywordflow">return</span> code;</div>
<div class="line"><a name="l01127"></a><span class="lineno"> 1127</span> }</div>
</div><!-- fragment -->
<p class="reference">引用了 <a class="el" href="a00257.html#af4d8743272a8eb22e205078faaed38c5">_GetDCEx()</a>, <a class="el" href="a03728_source.html#l00432">_IsDescendant()</a>, <a class="el" href="a00644_source.html#l00102">_ReleaseDC()</a>, <a class="el" href="a00899_source.html#l02182">tagQ::caret</a>, <a class="el" href="a00899.html#a70b09c3e2b495630f4205d34be505afb">CheckLock()</a>, <a class="el" href="a00935_source.html#l00067">CopyOffsetRect()</a>, <a class="el" href="a00365_source.html#l02246">tagCARET::cx</a>, <a class="el" href="a00365_source.html#l02245">tagCARET::cy</a>, <a class="el" href="a00563_source.html#l00175">DWORD</a>, <a class="el" href="a03257_source.html#l00439">hrgnInvalid</a>, <a class="el" href="a03257_source.html#l00460">hrgnSW</a>, <a class="el" href="a00365_source.html#l01406">tagWND::hrgnUpdate</a>, <a class="el" href="a00620_source.html#l00334">InternalHideCaret()</a>, <a class="el" href="a00836_source.html#l00067">InternalScrollDC()</a>, <a class="el" href="a00620_source.html#l00294">InternalShowCaret()</a>, <a class="el" href="a00935_source.html#l00184">IntersectRect()</a>, <a class="el" href="a00644_source.html#l01644">InvalidateDCCache()</a>, <a class="el" href="a03728_source.html#l00456">IsVisible()</a>, <a class="el" href="a00872_source.html#l04607">OffsetChildren()</a>, <a class="el" href="a00935_source.html#l00132">OffsetRect()</a>, <a class="el" href="a00899_source.html#l01706">tagDESKTOP::pDeskInfo</a>, <a class="el" href="a00899_source.html#l02273">tagTHREADINFO::pq</a>, <a class="el" href="a00263_source.html#l00526">PtiCurrent()</a>, <a class="el" href="a00365_source.html#l01399">tagWND::rcClient</a>, <a class="el" href="a00365_source.html#l01398">tagWND::rcWindow</a>, <a class="el" href="a00899_source.html#l02288">tagTHREADINFO::rpdesk</a>, <a class="el" href="a00935_source.html#l00021">SetRect()</a>, <a class="el" href="a00935_source.html#l00414">SetRectEmpty()</a>, <a class="el" href="a00860_source.html#l01031">SpbCheckRect()</a>, <a class="el" href="a00365_source.html#l01603">tagDESKTOPINFO::spwnd</a>, <a class="el" href="a00365_source.html#l02239">tagCARET::spwnd</a>, <a class="el" href="a00365_source.html#l01393">tagWND::spwndChild</a>, <a class="el" href="a00365_source.html#l01391">tagWND::spwndNext</a>, <a class="el" href="a00365_source.html#l01392">tagWND::spwndParent</a>, <a class="el" href="a00935_source.html#l00233">UnionRect()</a>, <a class="el" href="a00365_source.html#l02243">tagCARET::x</a>, <a class="el" href="a00896_source.html#l01257">xxxInternalInvalidate()</a>, <a class="el" href="a00896_source.html#l00302">xxxRedrawWindow()</a>, <a class="el" href="a00842_source.html#l00613">xxxSendMessage()</a> , 以及 <a class="el" href="a00365_source.html#l02244">tagCARET::y</a>.</p>
<p class="reference">被这些函数引用 <a class="el" href="a03614_source.html#l04437">NtUserScrollWindowEx()</a>.</p>
</div>
</div>
</div><!-- contents -->
</div><!-- doc-content -->
<div class="ttc" id="aa03257_html_a370e6d8fd1b15a3b96e8916cde9a7f09"><div class="ttname"><a href="a03257.html#a370e6d8fd1b15a3b96e8916cde9a7f09">hrgnScrl1</a></div><div class="ttdeci">HRGN hrgnScrl1</div><div class="ttdef"><b>Definition:</b> <a href="a03257_source.html#l00461">kernel/globals.c:461</a></div></div>
<div class="ttc" id="aa00644_html_a69728f013275d0f4332dded4eb2432a3"><div class="ttname"><a href="a00644.html#a69728f013275d0f4332dded4eb2432a3">InvalidateDCCache</a></div><div class="ttdeci">BOOL InvalidateDCCache(PWND pwndInvalid, DWORD flags)</div><div class="ttdef"><b>Definition:</b> <a href="a00644_source.html#l01644">dc.c:1644</a></div></div>
<div class="ttc" id="aa00896_html_a487301eed51abdcd2b3920954855e848"><div class="ttname"><a href="a00896.html#a487301eed51abdcd2b3920954855e848">xxxRedrawWindow</a></div><div class="ttdeci">BOOL xxxRedrawWindow(PWND pwnd, LPRECT lprcUpdate, HRGN hrgnUpdate, DWORD flags)</div><div class="ttdef"><b>Definition:</b> <a href="a00896_source.html#l00302">update.c:302</a></div></div>
<div class="ttc" id="aa03257_html_aed1964e1e99dd24b6c0b6f5396afc7b7"><div class="ttname"><a href="a03257.html#aed1964e1e99dd24b6c0b6f5396afc7b7">hrgnScrlValid</a></div><div class="ttdeci">HRGN hrgnScrlValid</div><div class="ttdef"><b>Definition:</b> <a href="a03257_source.html#l00466">kernel/globals.c:466</a></div></div>
<div class="ttc" id="aa02653_html"><div class="ttname"><a href="a02653.html">tagCARET</a></div><div class="ttdef"><b>Definition:</b> <a href="a00365_source.html#l02238">user.h:2238</a></div></div>
<div class="ttc" id="aa00935_html_ae447c29296398f6e6ae0f28d192e606d"><div class="ttname"><a href="a00935.html#ae447c29296398f6e6ae0f28d192e606d">UnionRect</a></div><div class="ttdeci">BOOL APIENTRY UnionRect(LPRECT prcDst, CONST RECT *prcSrc1, CONST RECT *prcSrc2)</div><div class="ttdef"><b>Definition:</b> <a href="a00935_source.html#l00233">rect.c:233</a></div></div>
<div class="ttc" id="aa02801_html_a76d4881aa4c15330103e83a80e6b5dc7"><div class="ttname"><a href="a02801.html#a76d4881aa4c15330103e83a80e6b5dc7">tagDESKTOP::pDeskInfo</a></div><div class="ttdeci">PDESKTOPINFO pDeskInfo</div><div class="ttdef"><b>Definition:</b> <a href="a00899_source.html#l01706">userk.h:1706</a></div></div>
<div class="ttc" id="aa00935_html_a479bbe69c871894f6ca23dfa237481ad"><div class="ttname"><a href="a00935.html#a479bbe69c871894f6ca23dfa237481ad">SetRect</a></div><div class="ttdeci">BOOL APIENTRY SetRect(LPRECT prc, int left, int top, int right, int bottom)</div><div class="ttdef"><b>Definition:</b> <a href="a00935_source.html#l00021">rect.c:21</a></div></div>
<div class="ttc" id="aa03257_html_a11a75d31dd330968778abca1b9ef9906"><div class="ttname"><a href="a03257.html#a11a75d31dd330968778abca1b9ef9906">hrgnSW</a></div><div class="ttdeci">HRGN hrgnSW</div><div class="ttdef"><b>Definition:</b> <a href="a03257_source.html#l00460">kernel/globals.c:460</a></div></div>
<div class="ttc" id="aa00365_html_abd272d555fe4a691f526815378818677"><div class="ttname"><a href="a00365.html#abd272d555fe4a691f526815378818677">_IsDescendant</a></div><div class="ttdeci">BOOL _IsDescendant(PWND pwndParent, PWND pwndChild)</div><div class="ttdef"><b>Definition:</b> <a href="a03728_source.html#l00432">rtl/winmgr.c:432</a></div></div>
<div class="ttc" id="aa03257_html_a31a801a6f7836cef5d45ab70aa8aadc2"><div class="ttname"><a href="a03257.html#a31a801a6f7836cef5d45ab70aa8aadc2">hrgnScrlVis</a></div><div class="ttdeci">HRGN hrgnScrlVis</div><div class="ttdef"><b>Definition:</b> <a href="a03257_source.html#l00463">kernel/globals.c:463</a></div></div>
<div class="ttc" id="aa00953_html_a392e62da233ed3e2f7c3fd4f487a3896"><div class="ttname"><a href="a00953.html#a392e62da233ed3e2f7c3fd4f487a3896">INT</a></div><div class="ttdeci">int INT</div><div class="ttdef"><b>Definition:</b> <a href="a00953_source.html#l00006">bench.c:6</a></div></div>
<div class="ttc" id="aa00842_html_a69cf2e14dcefd941469ad5126e40f79a"><div class="ttname"><a href="a00842.html#a69cf2e14dcefd941469ad5126e40f79a">xxxSendMessage</a></div><div class="ttdeci">LONG xxxSendMessage(PWND pwnd, UINT message, DWORD wParam, LONG lParam)</div><div class="ttdef"><b>Definition:</b> <a href="a00842_source.html#l00613">sendmsg.c:613</a></div></div>
<div class="ttc" id="aa00257_html_a8315d2c807ba18ba9e528c40614b6173"><div class="ttname"><a href="a00257.html#a8315d2c807ba18ba9e528c40614b6173">PtiCurrent</a></div><div class="ttdeci">PTHREADINFO PtiCurrent(VOID)</div><div class="ttdef"><b>Definition:</b> <a href="a00263_source.html#l00526">winmgrc.c:526</a></div></div>
<div class="ttc" id="aa00620_html_a1376ba7ebe3f4b2ab5ebe9fa20b3ed87"><div class="ttname"><a href="a00620.html#a1376ba7ebe3f4b2ab5ebe9fa20b3ed87">InternalHideCaret</a></div><div class="ttdeci">void InternalHideCaret()</div><div class="ttdef"><b>Definition:</b> <a href="a00620_source.html#l00334">caret.c:334</a></div></div>
<div class="ttc" id="aa02581_html_af729b7de7a8fb84b70b70c4b401ce789"><div class="ttname"><a href="a02581.html#af729b7de7a8fb84b70b70c4b401ce789">tagWND::spwndNext</a></div><div class="ttdeci">struct tagWND * spwndNext</div><div class="ttdef"><b>Definition:</b> <a href="a00365_source.html#l01391">user.h:1391</a></div></div>
<div class="ttc" id="aa02581_html_a79d8579e0cf1a8fb985bc709e08f61ac"><div class="ttname"><a href="a02581.html#a79d8579e0cf1a8fb985bc709e08f61ac">tagWND::hrgnUpdate</a></div><div class="ttdeci">HRGN hrgnUpdate</div><div class="ttdef"><b>Definition:</b> <a href="a00365_source.html#l01406">user.h:1406</a></div></div>
<div class="ttc" id="aa00935_html_a59a3cfdacf3d0e5d10c20abee032cfc6"><div class="ttname"><a href="a00935.html#a59a3cfdacf3d0e5d10c20abee032cfc6">OffsetRect</a></div><div class="ttdeci">BOOL APIENTRY OffsetRect(LPRECT prc, int cx, int cy)</div><div class="ttdef"><b>Definition:</b> <a href="a00935_source.html#l00132">rect.c:132</a></div></div>
<div class="ttc" id="aa00935_html_a1c87c29903dd37145cd93b64140a5d3a"><div class="ttname"><a href="a00935.html#a1c87c29903dd37145cd93b64140a5d3a">IntersectRect</a></div><div class="ttdeci">BOOL APIENTRY IntersectRect(LPRECT prcDst, CONST RECT *prcSrc1, CONST RECT *prcSrc2)</div><div class="ttdef"><b>Definition:</b> <a href="a00935_source.html#l00184">rect.c:184</a></div></div>
<div class="ttc" id="aa00644_html_a1ec030500a19f775519fbaf16c15f814"><div class="ttname"><a href="a00644.html#a1ec030500a19f775519fbaf16c15f814">_ReleaseDC</a></div><div class="ttdeci">BOOL _ReleaseDC(HDC hdc)</div><div class="ttdef"><b>Definition:</b> <a href="a00644_source.html#l00102">dc.c:102</a></div></div>
<div class="ttc" id="aa00644_html_a6abd9613dcf1227e044eb29b61b1b4ae"><div class="ttname"><a href="a00644.html#a6abd9613dcf1227e044eb29b61b1b4ae">FastWindowFromDC</a></div><div class="ttdeci">PWND FastWindowFromDC(HDC hdc)</div><div class="ttdef"><b>Definition:</b> <a href="a00644_source.html#l01832">dc.c:1832</a></div></div>
<div class="ttc" id="aa03257_html_ab597263bdbb3441715804712fcf29e6d"><div class="ttname"><a href="a03257.html#ab597263bdbb3441715804712fcf29e6d">gpDispInfo</a></div><div class="ttdeci">PDISPLAYINFO gpDispInfo</div><div class="ttdef"><b>Definition:</b> <a href="a03257_source.html#l00125">kernel/globals.c:125</a></div></div>
<div class="ttc" id="aa00365_html_ac638a1ce39dd10773c0133549503776e"><div class="ttname"><a href="a00365.html#ac638a1ce39dd10773c0133549503776e">CopyOffsetRect</a></div><div class="ttdeci">BOOL APIENTRY CopyOffsetRect(LPRECT prcDst, CONST RECT *prcSrc, int cx, int cy)</div><div class="ttdef"><b>Definition:</b> <a href="a00935_source.html#l00067">rect.c:67</a></div></div>
<div class="ttc" id="aa00563_html_a074685e97e89d6aa2accdfcb82328699"><div class="ttname"><a href="a00563.html#a074685e97e89d6aa2accdfcb82328699">DWORD</a></div><div class="ttdeci">ddeml v[i< inst >][t< type >][hObj|pObj] Dump DDEML state information ddeml lists all ddeml instances for this process n ddeml t< type > lists all ddeml objects of the given type n n assumes link is first DWORD</div><div class="ttdef"><b>Definition:</b> <a href="a00563_source.html#l00175">exts.h:175</a></div></div>
<div class="ttc" id="aa03257_html_a0787ffd7a666153b6a60d8eb73917037"><div class="ttname"><a href="a03257.html#a0787ffd7a666153b6a60d8eb73917037">hrgnScrlSrc</a></div><div class="ttdeci">HRGN hrgnScrlSrc</div><div class="ttdef"><b>Definition:</b> <a href="a03257_source.html#l00464">kernel/globals.c:464</a></div></div>
<div class="ttc" id="aa01881_html"><div class="ttname"><a href="a01881.html">_TL</a></div><div class="ttdef"><b>Definition:</b> <a href="a00257_source.html#l00347">usercli.h:347</a></div></div>
<div class="ttc" id="aa03257_html_a0c32ef18f0038af530970be1400ae8a1"><div class="ttname"><a href="a03257.html#a0c32ef18f0038af530970be1400ae8a1">hrgnScrl2</a></div><div class="ttdeci">HRGN hrgnScrl2</div><div class="ttdef"><b>Definition:</b> <a href="a03257_source.html#l00462">kernel/globals.c:462</a></div></div>
<div class="ttc" id="aa02581_html_a2778d611c2b27395e559c94d05732e1f"><div class="ttname"><a href="a02581.html#a2778d611c2b27395e559c94d05732e1f">tagWND::rcWindow</a></div><div class="ttdeci">RECT rcWindow</div><div class="ttdef"><b>Definition:</b> <a href="a00365_source.html#l01398">user.h:1398</a></div></div>
<div class="ttc" id="aa02581_html"><div class="ttname"><a href="a02581.html">tagWND</a></div><div class="ttdef"><b>Definition:</b> <a href="a00365_source.html#l01388">user.h:1388</a></div></div>
<div class="ttc" id="aa02581_html_a6053af0b243b6737640988eb63081de3"><div class="ttname"><a href="a02581.html#a6053af0b243b6737640988eb63081de3">tagWND::spwndParent</a></div><div class="ttdeci">struct tagWND * spwndParent</div><div class="ttdef"><b>Definition:</b> <a href="a00365_source.html#l01392">user.h:1392</a></div></div>
<div class="ttc" id="aa03257_html_a22582da0c3535d7a4fc98d7a7b03cc18"><div class="ttname"><a href="a03257.html#a22582da0c3535d7a4fc98d7a7b03cc18">hrgnInvalid</a></div><div class="ttdeci">HRGN hrgnInvalid</div><div class="ttdef"><b>Definition:</b> <a href="a03257_source.html#l00439">kernel/globals.c:439</a></div></div>
<div class="ttc" id="aa02869_html_ade15a80896abdba1533b909440c29699"><div class="ttname"><a href="a02869.html#ade15a80896abdba1533b909440c29699">tagQ::caret</a></div><div class="ttdeci">CARET caret</div><div class="ttdef"><b>Definition:</b> <a href="a00899_source.html#l02182">userk.h:2182</a></div></div>
<div class="ttc" id="aa00935_html_a0cbc8750cb300c339ef3d2c0ca689f1a"><div class="ttname"><a href="a00935.html#a0cbc8750cb300c339ef3d2c0ca689f1a">EqualRect</a></div><div class="ttdeci">BOOL APIENTRY EqualRect(CONST RECT *prc1, CONST RECT *prc2)</div><div class="ttdef"><b>Definition:</b> <a href="a00935_source.html#l00285">rect.c:285</a></div></div>
<div class="ttc" id="aa00836_html_a9c15f7cde7f639a841e61fa332a07992"><div class="ttname"><a href="a00836.html#a9c15f7cde7f639a841e61fa332a07992">InternalScrollDC</a></div><div class="ttdeci">int InternalScrollDC(HDC hdc, int dx, int dy, RECT *prcSrc, RECT *prcClip, HRGN hrgnInvalid, HRGN hrgnUpdate, LPRECT prcUpdate, BOOL fLogUnits)</div><div class="ttdef"><b>Definition:</b> <a href="a00836_source.html#l00067">scrollw.c:67</a></div></div>
<div class="ttc" id="aa02605_html_a5e0929a8ef013061be966961b2eddbff"><div class="ttname"><a href="a02605.html#a5e0929a8ef013061be966961b2eddbff">tagDISPLAYINFO::pDevLock</a></div><div class="ttdeci">LPVOID pDevLock</div><div class="ttdef"><b>Definition:</b> <a href="a00365_source.html#l01577">user.h:1577</a></div></div>
<div class="ttc" id="aa00860_html_a682e7a615d4877278df80629d78c3081"><div class="ttname"><a href="a00860.html#a682e7a615d4877278df80629d78c3081">SpbCheckRect</a></div><div class="ttdeci">VOID SpbCheckRect(PWND pwnd, LPRECT lprc, DWORD flags)</div><div class="ttdef"><b>Definition:</b> <a href="a00860_source.html#l01031">spb.c:1031</a></div></div>
<div class="ttc" id="aa00872_html_a6790f24888ee57e445fd3eb5b90fae39"><div class="ttname"><a href="a00872.html#a6790f24888ee57e445fd3eb5b90fae39">OffsetChildren</a></div><div class="ttdeci">VOID OffsetChildren(PWND pwnd, int dx, int dy, LPRECT prcHitTest)</div><div class="ttdef"><b>Definition:</b> <a href="a00872_source.html#l04607">swp.c:4607</a></div></div>
<div class="ttc" id="aa00896_html_af920796d5612f833ca2179b07a008e69"><div class="ttname"><a href="a00896.html#af920796d5612f833ca2179b07a008e69">xxxInternalInvalidate</a></div><div class="ttdeci">VOID xxxInternalInvalidate(PWND pwnd, HRGN hrgnUpdate, DWORD flags)</div><div class="ttdef"><b>Definition:</b> <a href="a00896_source.html#l01257">update.c:1257</a></div></div>
<div class="ttc" id="aa02653_html_a0a2f84ed7838f07779ae24c5a9086d33"><div class="ttname"><a href="a02653.html#a0a2f84ed7838f07779ae24c5a9086d33">tagCARET::y</a></div><div class="ttdeci">int y</div><div class="ttdef"><b>Definition:</b> <a href="a00365_source.html#l02244">user.h:2244</a></div></div>
<div class="ttc" id="aa02889_html_abb1184e0c5805b5ad89b79dcc2bd17c8"><div class="ttname"><a href="a02889.html#abb1184e0c5805b5ad89b79dcc2bd17c8">tagTHREADINFO::rpdesk</a></div><div class="ttdeci">PDESKTOP rpdesk</div><div class="ttdef"><b>Definition:</b> <a href="a00899_source.html#l02288">userk.h:2288</a></div></div>
<div class="ttc" id="aa02889_html_aea8fcdf7513cfa8972ff27524296079b"><div class="ttname"><a href="a02889.html#aea8fcdf7513cfa8972ff27524296079b">tagTHREADINFO::pq</a></div><div class="ttdeci">struct tagQ * pq</div><div class="ttdef"><b>Definition:</b> <a href="a00899_source.html#l02273">userk.h:2273</a></div></div>
<div class="ttc" id="aa00935_html_afa9133f9221aadfcbf10c70a168f3a5f"><div class="ttname"><a href="a00935.html#afa9133f9221aadfcbf10c70a168f3a5f">SubtractRect</a></div><div class="ttdeci">BOOL APIENTRY SubtractRect(LPRECT prcDst, CONST RECT *prcSrc1, CONST RECT *prcSrc2)</div><div class="ttdef"><b>Definition:</b> <a href="a00935_source.html#l00316">rect.c:316</a></div></div>
<div class="ttc" id="aa00836_html_a7ecb77bf56d80ccba86e9cba46924271"><div class="ttname"><a href="a00836.html#a7ecb77bf56d80ccba86e9cba46924271">GetTrueClipRgn</a></div><div class="ttdeci">int GetTrueClipRgn(HDC hdc, HRGN hrgnClip)</div><div class="ttdef"><b>Definition:</b> <a href="a00836_source.html#l00030">scrollw.c:30</a></div></div>
<div class="ttc" id="aa00620_html_abaf8f946537e0303f6ba99f21d716670"><div class="ttname"><a href="a00620.html#abaf8f946537e0303f6ba99f21d716670">InternalShowCaret</a></div><div class="ttdeci">void InternalShowCaret()</div><div class="ttdef"><b>Definition:</b> <a href="a00620_source.html#l00294">caret.c:294</a></div></div>
<div class="ttc" id="aa02653_html_ad36501a70b25e18bcf48dd6e03392305"><div class="ttname"><a href="a02653.html#ad36501a70b25e18bcf48dd6e03392305">tagCARET::cy</a></div><div class="ttdeci">int cy</div><div class="ttdef"><b>Definition:</b> <a href="a00365_source.html#l02245">user.h:2245</a></div></div>
<div class="ttc" id="aa00899_html_a70b09c3e2b495630f4205d34be505afb"><div class="ttname"><a href="a00899.html#a70b09c3e2b495630f4205d34be505afb">CheckLock</a></div><div class="ttdeci">VOID CheckLock(PVOID pobj)</div></div>
<div class="ttc" id="aa02653_html_af905a9989361d094908ad04e08f6429d"><div class="ttname"><a href="a02653.html#af905a9989361d094908ad04e08f6429d">tagCARET::cx</a></div><div class="ttdeci">int cx</div><div class="ttdef"><b>Definition:</b> <a href="a00365_source.html#l02246">user.h:2246</a></div></div>
<div class="ttc" id="aa02609_html_a68937d60a6f49b7a8431db62b38ea721"><div class="ttname"><a href="a02609.html#a68937d60a6f49b7a8431db62b38ea721">tagDESKTOPINFO::spwnd</a></div><div class="ttdeci">struct tagWND * spwnd</div><div class="ttdef"><b>Definition:</b> <a href="a00365_source.html#l01603">user.h:1603</a></div></div>
<div class="ttc" id="aa02581_html_a6171c9000ea2060597a9bcf498ee0316"><div class="ttname"><a href="a02581.html#a6171c9000ea2060597a9bcf498ee0316">tagWND::spwndChild</a></div><div class="ttdeci">struct tagWND * spwndChild</div><div class="ttdef"><b>Definition:</b> <a href="a00365_source.html#l01393">user.h:1393</a></div></div>
<div class="ttc" id="aa00935_html_a6f9d1e9b327899127c080496900d48d9"><div class="ttname"><a href="a00935.html#a6f9d1e9b327899127c080496900d48d9">SetRectEmpty</a></div><div class="ttdeci">BOOL APIENTRY SetRectEmpty(LPRECT prc)</div><div class="ttdef"><b>Definition:</b> <a href="a00935_source.html#l00414">rect.c:414</a></div></div>
<div class="ttc" id="aa00935_html_a31ccccdb469eefbb55d18b71a26af0da"><div class="ttname"><a href="a00935.html#a31ccccdb469eefbb55d18b71a26af0da">CopyRect</a></div><div class="ttdeci">BOOL APIENTRY CopyRect(LPRECT prcDst, CONST RECT *prcSrc)</div><div class="ttdef"><b>Definition:</b> <a href="a00935_source.html#l00391">rect.c:391</a></div></div>
<div class="ttc" id="aa00257_html_af4d8743272a8eb22e205078faaed38c5"><div class="ttname"><a href="a00257.html#af4d8743272a8eb22e205078faaed38c5">_GetDCEx</a></div><div class="ttdeci">HDC _GetDCEx(HWND hwnd, HRGN hrgnClip, DWORD flags)</div></div>
<div class="ttc" id="aa02653_html_a68937d60a6f49b7a8431db62b38ea721"><div class="ttname"><a href="a02653.html#a68937d60a6f49b7a8431db62b38ea721">tagCARET::spwnd</a></div><div class="ttdeci">struct tagWND * spwnd</div><div class="ttdef"><b>Definition:</b> <a href="a00365_source.html#l02239">user.h:2239</a></div></div>
<div class="ttc" id="aa03257_html_a0290a2221e753feb7b6a59fcf25f4ffb"><div class="ttname"><a href="a03257.html#a0290a2221e753feb7b6a59fcf25f4ffb">hrgnScrlDst</a></div><div class="ttdeci">HRGN hrgnScrlDst</div><div class="ttdef"><b>Definition:</b> <a href="a03257_source.html#l00465">kernel/globals.c:465</a></div></div>
<div class="ttc" id="aa02581_html_a17d59d04094aef8b577c0aa781cdf2c6"><div class="ttname"><a href="a02581.html#a17d59d04094aef8b577c0aa781cdf2c6">tagWND::rcClient</a></div><div class="ttdeci">RECT rcClient</div><div class="ttdef"><b>Definition:</b> <a href="a00365_source.html#l01399">user.h:1399</a></div></div>
<div class="ttc" id="aa02653_html_a6150e0515f7202e2fb518f7206ed97dc"><div class="ttname"><a href="a02653.html#a6150e0515f7202e2fb518f7206ed97dc">tagCARET::x</a></div><div class="ttdeci">int x</div><div class="ttdef"><b>Definition:</b> <a href="a00365_source.html#l02243">user.h:2243</a></div></div>
<div class="ttc" id="aa00365_html_ad3225ce06580cb58802233512f3d9c81"><div class="ttname"><a href="a00365.html#ad3225ce06580cb58802233512f3d9c81">IsVisible</a></div><div class="ttdeci">BOOL IsVisible(PWND pwnd)</div><div class="ttdef"><b>Definition:</b> <a href="a03728_source.html#l00456">rtl/winmgr.c:456</a></div></div>
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