Version: (using KDE KDE 3.5.5) Installed from: SuSE RPMs OS: Linux If I set the _MOTIF_WM_HINTS property with decorations=borders (only), I get the titlebar anyways. See the attached code for a repro. I'd expect a window with a border, but no titlebar to appear.
Created attachment 20218 [details] Repro
KWin does not and will not fully support _MOTIF_WM_HINTS (to quote from sources, itself quoted from another window manager, 'We support those MWM hints deemed non-stupid'). The specific appearance of the decoration is controlled by the window manager.