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Related Modules:
Description:
Provides interfaces for reporting event data of input devices.
The interfaces include the callback for reporting the input event data and the functions for obtaining the data in polling mode.
RegisterReportCallback )(uint32_t devIndex, InputReportEventCb *callback) |
Registers a callback for reporting subscribed data of specified input devices. |
UnregisterReportCallback )(uint32_t devIndex) |
Unregisters the callback for reporting subscribed data of specified input devices. |
GetInputEvent )(uint32_t devIndex, InputEventData *eventData) |
int32_t(* InputReporter::GetInputEvent) (uint32_t devIndex, [InputEventData](InputEventData.md) *eventData)
Description:
Gets the input event data.
This function enables the input service to proactively obtain the input event data in polling mode.
Parameters:
Returns:
Returns 0 if the operation is successful; returns an error code defined in RetStatus otherwise.
int32_t(* InputReporter::RegisterReportCallback) (uint32_t devIndex, [InputReportEventCb](InputReportEventCb.md) *callback)
Description:
Registers a callback for reporting subscribed data of specified input devices.
After this callback is successfully registered, the driver can report the input event data to the input service through this callback.
Parameters:
Returns:
Returns 0 if the operation is successful; returns an error code defined in RetStatus otherwise.
int32_t(* InputReporter::UnregisterReportCallback) (uint32_t devIndex)
Description:
Unregisters the callback for reporting subscribed data of specified input devices.
Parameters:
devIndex | Indicates the index of an input device. A maximum of 32 input devices are supported. The value ranges from 0 to 31, and value 0 represents the first input device. |
Returns:
Returns 0 if the operation is successful; returns an error code defined in RetStatus otherwise.
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