QtWebEngine: Specify Monitor/Window for the getDisplayMedia Screen Capture API

[maltejur]

Is is possible somehow to specify the monitor or window used by the navigator.mediaDevices.getDisplayMedia API? This thread mentions that the UI doesn't exist for that in the QtWebEngine and that one would have to implement it themselves. @raven-worx but to do that, how do you get the stream source ids that you would then pass to getDisplayMedia? In Electron, I found the desktopCapturer.getSources and I am looking for something similar for QtWebEngine. Or should this be approached entirely different?