http://bugs.winehq.org/show_bug.cgi?id=19376
--- Comment #16 from Martin Gräßlin mgraesslin@kde.org 2011-04-04 14:40:45 CDT --- We finally added proper support to allow applications to block compositing. This will first become available with KDE Plasma Workspaces in version 4.7 to be released in summer this year.
We would love to see Wine making use of the new X property to tell KWin (and hopefully soon other compositors) to completely block compositing. This might be a good way to implement the existing DWM call from Windows.
We are going to try to get the new property as an addition to the NETWM spec and to make it cross-desktop.
A reference implementation can be found in KDELibs commit 7cd28e48:
https://projects.kde.org/projects/kde/kdelibs/repository/revisions/7cd28e48a...
Feel free to copy the code. In case of any question, please do not hesistate to ask, we are willing to provide you all the help you need.
Cheers Martin Gräßlin KWin Maintainer