http://bugs.winehq.org/show_bug.cgi?id=12125
--- Comment #7 from Dmitry Timoshkov dmitry@codeweavers.com 2008-03-20 19:30:14 --- (In reply to comment #4)
I think the best solution is make a way to generate windows without border but controlled by X Window Manager, like Windows(r) do (if possible!).
That's impossible to have an X11 managed window and allow an app to draw its non-client area (borders, caption menu), X11 simply doesn't support it.