This is a sort of extension of [this question I asked yesterday](https://stackoverflow.com/questions/5422948/wpf-in-a-usercontrol-set-a-controltemplates-content-to-the-value-of-a-dependency) (the question gave me a contentcontrol that can overlay the current control). I now have a contentcontrol that can be overlayed on the current control via bindings (a modal type window). This works well and I am happy with this. One great feature would be if I could get the overlay to go over its parent.

![outline of display](https://i.stack.imgur.com/PjYdb.jpg)

currently the overlay will go into "My Control" control. What I would like is if I can still define it in that control (as that is were it is needed), but when it is displayed it can cover the whole main content area and / or the main window.

is this even possible?

Thanks