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ICDrawStart macro

The ICDrawStart macro notifies a rendering driver to start its internal clock for the timing of drawing frames. You can use this macro or explicitly call the ICM_DRAW_START message.

Syntax


void ICDrawStart(
   hic
);

Parameters

hic

Handle to a driver.

Return value

This macro does not return a value.

Remarks

This message is used by hardware that performs its own asynchronous decompression, timing, and drawing.

When the driver receives this message, it should start rendering data at the rate specified with the ICM_DRAW_BEGIN message.

The ICDrawStart and ICDrawStop macros do not nest. If your driver receives ICDrawStart before rendering is stopped with ICDrawStop, it should restart rendering with new parameters.

Requirements

Minimum supported client

Windows 2000 Professional [desktop apps only]

Minimum supported server

Windows 2000 Server [desktop apps only]

Header

Vfw.h

See also

Video Compression Manager
Video Compression Macros

 

 

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