The MCIWNDM_PLAYTO message plays the content of an MCI device from the current position to the specified ending location or until another command stops playback. If the specified ending location is beyond the end of the content, playback stops at the end of the content. You can send this message explicitly or by using the MCIWndPlayTo macro.
MCIWNDM_PLAYTO
wParam = 0;
lParam = (LPARAM) (LONG) lEnd;
Returns zero if successful or an error otherwise.
This macro is defined using the MCIWndSeek and MCIWndPlayTo macros, which in turn use the MCI_SEEK command and the MCIWNDM_PLAYTO message.
You can also specify both a starting and ending location for playback by using the MCIWndPlayFromTo macro.
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, MCI_SEEK, MCIWndPlayFromTo, MCIWndPlayTo, MCIWndSeek