This message notifies an application when a device completes the action indicated by a media message or when an error occurs.

MsgParam1
     USHORT  usNotifycode     /*  Notification code. */
     USHORT  usUserParameter  /*  User parameter. */

MsgParam2
     USHORT  usDeviceID       /*  Device ID. */
     USHORT  usMessage        /*  Message ID. */