Version: (using Devel) Installed from: Compiled sources The oxygen widget style currently uses an event handler to change the window mask for QMdiSubWindow widgets. The following patch for kdebase/runtime instead adds supports for the SH_WindowFrame_Mask style hint in oxygen.
Created attachment 32217 [details] Oxygen WindowMask Patch
For reference, see http://kdepepo.wordpress.com/2009/03/17/minimalistic-window-decoration/#comment-53
Danke Christoph, I think your patch looks good :)
Committed and forgot the BUG:# line and mistyped Christoph's name, I'm definitely too tired... http://websvn.kde.org/?view=rev&revision=940666