WM_PENEVENT

Sent to an application after StartPenInput has initiated a pen collection.

Parameters

wParam

Submessage identifier as described in the following table. Each submessage is documented separately.

Constant	Description
PE_BEGINDATA	Initialization message to all targets.
PE_BEGININPUT	Begin default input.
PE_BUFFERWARNING	The input queue is getting full. The application should call GetPenInput.
PE_ENDDATA	Termination message to all targets.
PE_RESULT	Recognition result message to all targets.
PE_ENDINPUT	Input termination message to window.
PE_GETINKINGINFO	Get inking information.
PE_GETPCMINFO	Get input collection information.
PE_MOREDATA	Target gets more data.
PE_PENMOVE	The pen moved, placing more packets into the input queue without a tip transition. This mes-sage is coalesced with other PE_PENMOVE messages, so the Windows queue has only a single such message waiting.
PE_PENDOWN	The pen tip went down.
PE_PENUP	The pen tip went up.
PE_SETTARGETS	Set TARGINFO target data structure.
PE_TERMINATED	Pen input terminated. The HPCM handle for the current collection has become invalid.
PE_TERMINATING	Pen input is about to terminate. The application must retrieve any remaining points immediately.

lParam

Depends on wParam. In most cases, this is extra information encapsulating a reference to the event and the HPCM that generated it. These are retrieved using the EventRefFromWpLp and HpcmFromWpLp macros.

Comments

This message is not sent if polling is usedthat is, if the dwPcm member of the PCMINFO structure contains the PCM_DOPOLLING flag.

See Also

GetPenInput, StartPenInput, TARGINFO

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