Window exclude mouse cursor

Is there a way to exclude the mouse cursor from a window, or prevent it from entering? Basically like constrain cursor, except the opposite.

Best you can do currently is set the panel Cursor parameter to Invisible.
Is that useful in your setup?

That would actually probably make it worse. I don’t want to lose the cursor on the projector display.

I suppose I could probably find a third party app that could do it, but I was hoping to do it all in touch designer.

Can I make this a feature request?