Syntax
INT is_UnlockDDOverlayMem (HIDS hf)
Description
is_UnlockDDOverlayMem() disables access to the overlay buffer in DirectDraw back buffer mode. The contents of the overlay buffer are updated on the display (if is_ShowDDOverlay() has faded on the overlay)
Parameters
hf: Frame grabber handle
Return value
IS_SUCCESS, IS_NO_SUCCESS
