how can I control the opacity and z-order of the top level window in WPF? -

I would like to create a small WPF app window semi-transparent and at the top of other windows.

When I change the settings in the top-level window, it only affects the content, not the title bar or the boundary.

Is it possible with WPF ??

Thanks

Windowstyle and allows Transparency to have two properties that you have to change .

Your window sits at the top of all other windows, so you also want to set it to the right. To move the window, handle one mouse event from the limit on which you are added, then call the event handler.