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."