PE_BUFFERWARNING
Generated by
the pen driver component of the system when the input queue is approximately
half full. When an application receives PE_BUFFERWARNING, it should immediately
call GetPenInput
to drain the input queue. Submessage of WM_PENEVENT.
Parameters
wParam
PE_BUFFERWARNING.
lParam
Extra
information encapsulating a reference to the event and the HPCM that
generated it. Applications can use the EventRefFromWpLp and HpcmFromWpLp
macros to retrieve these values.
Comments
If an
application receives this message, it has fallen behind in processing the
input. The buffer is in danger of overflowing. The application should
repeatedly call GetPenInput
to gather the unprocessed pen input.
See Also