The following code illustrates how to delete the first five seconds of a file.
USHORT usDeviceID;
MCI_EDIT_PARMS mep;
mep.hwndCallback = hwndMyWindow;
mep.ulFrom = 0;
mep.ulTo = 5000; /* Current time format is milliseconds */
/* Delete first five seconds of file */
mciSendCommand( usDeviceID,
MCI_DELETE,
MCI_NOTIFY | MCI_FROM | MCI_TO,
&mep,
0 );