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ICM_DRAW_START_PLAY
The ICM_DRAW_START_PLAY message provides the start and end times of a play
operation to a rendering driver. You can send this message explicitly or by using
the ICDrawStartPlay macro.
ICM_DRAW_START_PLAY
wParam = (DWORD) lFrom;
lParam = (DWORD) lTo;
Parameters
lFrom
Start time.
lTo
End time.
Return Values
This message does not return a value.
Remarks
This message precedes any frame data sent to the rendering driver.
Units for lFrom and lTo are specified with the ICM_DRAW_BEGIN message. For video data this is normally a frame number. For more information
about the playback rate, see the dwRate and dwScale members of the ICDRAWBEGIN structure.
If the end time is less than the start time, the playback direction is
reversed.
See Also
ICDRAWBEGIN, ICDrawStartPlay, ICM_DRAW_BEGIN
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