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 );