capGrabFrame macro (vfw.h)

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

Syntax

BOOL capGrabFrame(
     hwnd
);

Parameters

hwnd

Handle to a capture window.

Return value

Type: BOOL

Returns TRUE if successful or FALSE otherwise.

Remarks

For information about installing callback functions, see the capSetCallbackOnError and capSetCallbackOnFrame macros.

Requirements

See also

Video Capture

Video Capture Macros