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StopPenInput
2.0
Terminates collection of pen input.
int StopPenInput( HPCM hpcm, UINT idEvent, int nTermReason )
Parameters
hpcm
Handle to the collection of the pen data gathered during the input session. HPCM stands for "handle to a pen collection mode."
idEvent
The identifier of the packet in the task-specific queue at which the pen input
should be terminated. If this value is PID_CURRENT, pen input stops
immediately (that is, at the latest position in the task queue) and no further input is
collected. The idEvent parameter is the low-order word of the value returned from the Windows GetMessageExtraInfo function when processing a WM_LBUTTONDOWN message.
nTermReason
The reason for termination. This value is passed to the termination message
PE_TERMINATED. It can be one of the following:
Constant
| Description
| PCMR_APPTERMINATED
| Application terminated input.
| PCMR_TERMBOUND
| Pen was pressed outside bounding rectangle or region.
| PCMR_TERMEX
| Pen was pressed inside exclusion rectangle or region.
| PCMR_TERMPENUP
| Pen was lifted from the tablet.
| PCMR_TERMRANGE
| Pen left the tablet's range of sensitivity.
| PCMR_TERMTIMEOUT
| Time-out expired.
|
Return Value
Returns PCMR_OK if successful; otherwise, the return value can be one of the
following:
Constant
| Description
| PCMR_INVALIDCOLLECTION
| The hpcm handle is invalid because the calling application did not start input with StartPenInput.
| PCMR_INVALID_PACKETID
| idEvent is invalid.
|
Comments
This function allows an application to explicitly terminate pen collection
without waiting for one of the conditions specified by StartPenInput in the dwPcm member of PCMINFO.
Due to the asynchronous nature of pen input messages, the application should
wait for the WM_PENEVENT message with wParam set to PE_TERMINATED to make sure that the pen input process has completely
terminated. This does not apply if the application is using the polling method of
pen input.
See Also
StartPenInput
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