How to setup a AUv3 plugin so that… | Apple Developer Forums

How to setup a AUv3 plugin so that it shows as “Midi Source”?

I am developing an AudioUnit app that acts like a midi controller. I know that the possible values for the type of instrument to be configured in Info.plist are:

Code Block kAudioUnitType_Output = 'auou',
    kAudioUnitType_MusicDevice = 'aumu',
    kAudioUnitType_MusicEffect = 'aumf',
    kAudioUnitType_FormatConverter = 'aufc',
    kAudioUnitType_Effect = 'aufx',
    kAudioUnitType_Mixer = 'aumx',
    kAudioUnitType_Panner = 'aupn',
    kAudioUnitType_Generator = 'augn',
    kAudioUnitType_OfflineEffect = 'auol',
    kAudioUnitType_MIDIProcessor = 'aumi'

Code Block
kAudioUnitType_Output = 'auou',
kAudioUnitType_MusicDevice = 'aumu',
kAudioUnitType_MusicEffect = 'aumf',
kAudioUnitType_FormatConverter = 'aufc',
kAudioUnitType_Effect = 'aufx',
kAudioUnitType_Mixer = 'aumx',
kAudioUnitType_Panner = 'aupn',
kAudioUnitType_Generator = 'augn',
kAudioUnitType_OfflineEffect = 'auol',
kAudioUnitType_MIDIProcessor = 'aumi'

My app doesn't work with audio, only MIDI, and it doesn't receive it, only sends it. I want it to show in the "MIDI Sources section" of AUM. How to do this?