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WM_CAP_SINGLE_FRAME_OPEN message

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The WM_CAP_SINGLE_FRAME_OPEN message opens the capture file for single-frame capturing. Any previous information in the capture file is overwritten. You can send this message explicitly or by using the capCaptureSingleFrameOpen macro.

WM_CAP_SINGLE_FRAME_OPEN 
wParam = (WPARAM) 0; 
lParam = 0L;

Return Value

Returns TRUE if successful or FALSE otherwise.

Remarks

For information about installing callback functions, see the WM_CAP_SET_CALLBACK_ERROR and WM_CAP_SET_CALLBACK_FRAME messages.

Requirements

Requirement Value
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 Messages