Switch between vvvv and other fullscreen application

I’m trying to create a touchinterface that lets the user switch from a vvvv DX11 renderer to some application the client provided. Simple enough with the ShowWindow node, albeit somewhat hacky. But now I also need to put a back-button over that app that allows the user to return to vvvv. Is there any somewhat reliable way to do this? I guess I could add a small renderer window with the frame hidden, but I’d also have to make it permanently stay on top of the app…

You could have the second app on a secondary dummy display, perhaps just an hdmi dongle and then use screenshot to show the image in your vvvv interface and then “relay” the touches from vvvv to the secondary display.
Then you don’t have to switch apps

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