How to detect headset wire control in macos

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In windows/linux, The headset wire control is the same as the keyboard event. However, I can't use CGEventSourceKeyState to detect headset wire control in macos.

macos objective-c
1 Answers

Create an instance of the MPRemoteCommandCenter class from the MediaPlayer framework, then register for any commands your app supports. However, in order to cooperate with other apps well, you should register as a "Now Playing" app via MPNowPlayingInfoCenter.

See "Becoming a Now Playable App" for an example of how to implement this.

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