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capYieldCallback callback function

The capYieldCallback function is the yield callback function used with video capture. The name capYieldCallback is a placeholder for the application-supplied function name.

To set the callback, send the WM_CAP_SET_CALLBACK_YIELD message to the capture window or call the capSetCallbackOnYield macro.

Syntax


LRESULT CALLBACK capYieldCallback(
  HWND hWnd
);

Parameters

hWnd

Handle to the capture window associated with the callback function.

Remarks

The capture window calls the yield callback function at least once for every captured video frame, but the exact rate depends on the frame rate and the overhead of the capture driver and disk.

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 Capture
Video Capture Functions

 

 

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