|
PE_BEGININPUT
Begins default input processing. Submessage of WM_PENEVENT.
Parameters
wParam
PE_BEGININPUT
lParam
The high-order word is the handle of the window in which the pen first touched
down, and the low-order word is the event reference identifier returned from GetMessageExtraInfo.
Return Value
Returns PCMR_OK if successful; otherwise, it returns one of the following
values:
Constant
| Description
| PCMR_ALREADYCOLLECTING
| StartPenInput has already been called for this session.
| PCMR_APPTERMINATED
| The application terminated input.
| PCMR_ERROR
| Parameter or unspecified error.
| PCMR_INVALID_PACKETID
| A packet identifier is invalid.
| PCMR_SELECT
| Press-and-hold action was detected. Collection is not started.
| PCMR_TAP
| A tap was detected. Collection is not started.
|
Comments
A control can initiate default pen-input processing by sending this message to
its parent. If the parent allows the message to be processed by passing it to DefWindowProc, default pen-input behavior begins. The DoDefaultPenInput function uses this technique.
For further information about default processing, refer to Chapter 2,
"Starting Out with System Defaults."
See Also
DoDefaultPenInput, WM_PENEVENT
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