Docking Behaviour

Has anyone ever tried to mockup docking palettes? I am thinking along the lines of “Once a pressed mousebutton enters a certain area, change the state of an object”

I built something on the fly. Take a look at it, maybe it’s what you’re looking for.
drag&drop.zip (389.4 KB)

That’s what I meant. Great. I can’t undock it once it’s docked but this rocks! Let me try and fold it into my prototype to see if this will actually solve my problem.

Great to hear. I just used the example from https://www.w3schools.com/html/html5_draganddrop.asp , what you want to achieve is definitely doable.