The midiOutReset function will turn off all notes and mark any pending system-exclusive buffers as done and return them to the application. It may be useful in an application using MIDI output to provide the user with the ability to reset MIDI output.
Note:
Terminating a system-exclusive message without sending an EOX (end-of-exclusive) byte may cause problems for the receiving device. The midiOutReset function does not send an EOX byte when it terminates a system-exclusive message—applications are responsible for doing this.