Receive midi messages from all connected devices simultaneously

[elmcapp]

Is there a way to receive midi messages from all connected midi devices simultaneously or do we still need to create a different listener for each midi devices.

[djipco]

No. Currently, you have to add a listener for all devices. Obviously, all those listeners can call the same function, though.

By the way, when you have questions such as this one, you should post to GitHub Discussions instead of filing a new issue.

[elmcapp]

okay. Also can you provide an example of how to remove the listener

[djipco]

You can remove a listener from the WebMidi object by calling WebMidi.removeListener(). You can pass in options to control which listeners are removed. Check out the documentation for details.

You can also keep the listener in a variable and call its remove() method when you are done with it:

const myListener = WebMidi.addListener("noteon", doSomethingThenRemoveListener);

doSomethingThenRemoveListener() {
    // do something
    myListener.remove()
}