Opening and Closing Audio Device Drivers

After getting the capabilities of an audio device, you must open the device before you can use it. Audio devices aren't guaranteed to be shareable, so a particular device might not be available when you request it. If this happens, you should notify the user and allow the user to try to open the device again. When you open an audio device, be sure to close it as soon as you finish using it.

Use the following functions to open and close different types of audio devices.

Function	Description
midiInOpen	Opens a specified 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.
waveInOpen	Opens a waveform input device for recording.
waveInClose	Closes a specified waveform input device.
waveOutOpen	Opens a waveform output device for playback.
waveOutClose	Closes a specified waveform output device.

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