Opening and Closing MIDI Devices

After getting the MIDI capabilities, you must open a MIDI device to play or record MIDI messages. After using the device, you should close it to make it available to other applications. Use the following functions to open and close MIDI devices:

midiInOpen

Opens a MIDI input device for recording.

midiInClose

Closes a specified MIDI input device.

midiOutOpen

Opens a MIDI output device for playback.

midiOutClose

Closes a specified MIDI output device.