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WM_CAP_GRAB_FRAME message

The WM_CAP_GRAB_FRAME message retrieves and displays a single frame from the capture driver. After capture, overlay and preview are disabled. You can send this message explicitly or by using the capGrabFrame macro.



WM_CAP_GRAB_FRAME 
wParam = (WPARAM)0; 
lParam = (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

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

 

 

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