When I put the function "MoveWindow" in the "event" of the three panels, this works! Because the function recognizes the parameter when it's "Event". And if I put the function in button pops up an error E1513. Or I would have to create a MoveWindow for each panel button(MoveWindow1, MoveWindow2, MoveWindow3...), but I have more of the 30 panels. Is there only this way?