Specifies
the following notification message code:
MCI_NOTIFY_SUCCESSFUL
The command was completed
successfully.
MCI_NOTIFY_SUPERSEDED
Another
notification request (same type of command) was received.
MCI_NOTIFY_ABORTED
The command was interrupted and is unable to be
completed. For example, the first command was a PLAY with notify, and the
second command was STOP with or without notify.
Any other value indicates an error, and that value is the error number.
mciGetErrorString can be used
to convert the number into a textual description of the error.