The MCIWNDM_PLAYREVERSE message plays the current content in the reverse direction, beginning at the current position and ending at the beginning of the content or until another command stops playback. You can send this message explicitly or by using the MCIWndPlayReverse macro.
MCIWNDM_PLAYREVERSE
wParam = 0;
lParam = 0;
Returns zero if successful or an error otherwise.
Windows NT: Requires version 3.1 or later.
Windows: Requires Windows 95 or later.
Windows CE: Unsupported.
Header: Declared in vfw.h.
MCIWnd Window Class Overview, MCIWnd Messages, MCIWndPlayReverse