Getting the Number of Devices

Use the following functions to determine how many devices of a certain type are available in a given system.

Function	Description
auxGetNumDevs	Retrieves the number of auxiliary audio devices present in the system.
midiInGetNumDevs	Retrieves the number of MIDI input devices present in the system.
midiOutGetNumDevs	Retrieves the number of MIDI output devices present in the system.
waveInGetNumDevs	Retrieves the number of waveform input devices present in the system.
waveOutGetNumDevs	Retrieves the number of waveform output devices present in the system.

Audio devices are identified by a device identifier. The device identifier is determined implicitly from the number of devices present in a given system. Device identifiers range from zero to one less than the number of devices present. For example, if there are two MIDI output devices in a system, valid device identifiers are 0 and 1.

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