Hmmmmm.... but you can't change "ShowWindow" property for a form where you set "Dockable" property to 1 (Support docking and is dockable). and back, for "in-top" form you can't set Dockable property.. I have play a bit with forms,but did not there ways to Dock in-top form to not-in-screen form.

>And the limitation would make sense if _screen was the only possible docking port. But since forms can be docked on each other, I can easily see how we could build things using one form as a dock port for other forms, or even allow any form to dock on any other form, regardless of them being desktop or not, as-top or in-top forms.