The ICDrawFlush macro notifies a rendering driver to render the contents of any image buffers that are waiting to be drawn. You can use this macro or explicitly call the ICM_DRAW_FLUSH message.
DWORD ICDrawFlush(
hic
);
Returns ICERR_OK if successful or an error otherwise.
This message is used only by hardware that performs its own asynchronous decompression, timing, and drawing.
Windows NT: Requires version 3.1 or later.
Windows: Requires Windows 95 or later.
Windows CE: Unsupported.
Header: Declared in vfw.h.
Video Compression Manager Overview, Video Compression Macros, ICM_DRAW_FLUSH