ICDrawStartPlay macro (vfw.h)

Article
02/22/2024

The ICDrawStartPlay macro provides the start and end times of a play operation to a rendering driver. You can use this macro or explicitly call the ICM_DRAW_START_PLAY message.

Syntax

void ICDrawStartPlay(
   hic,
   lFrom,
   lTo
);

Parameters

hic

Handle to a driver.

lFrom

Start time.

lTo

End time.

Return value

None

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.

Requirements

Requirement	Value
Minimum supported client	Windows 2000 Professional [desktop apps only]
Minimum supported server	Windows 2000 Server [desktop apps only]
Target Platform	Windows
Header	vfw.h