Using the MCI_NOTIFY Flag

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[The feature associated with this page, MCI, is a legacy feature. It has been superseded by MediaPlayer. MediaPlayer has been optimized for Windows 10 and Windows 11. Microsoft strongly recommends that new code use MediaPlayer instead of MCI, when possible. Microsoft suggests that existing code that uses the legacy APIs be rewritten to use the new APIs if possible.]

The following example shows how the MCI_NOTIFY flag is used with the MCI_PLAY command. The handle to the window procedure that will process the MM_MCINOTIFY message is specified in hwnd.

MCI_DGV_PLAY_PARMS mciPlay; 
DWORD dwFlags; 
 
mciPlay.dwCallback = MAKELONG(hwnd, 0); 
dwFlags = MCI_NOTIFY; 
 
mciSendCommand(wMCIDeviceID, MCI_PLAY, dwFlags, (DWORD)(LPSTR)&mciPlay);