http://bugs.winehq.org/show_bug.cgi?id=3534
------- Additional Comments From lich@math.spbu.ru 2007-27-06 06:42 ------- I forgot to mention: Setting ParentRelative is an acceptable way to achieve transparecy, since KDE developers suggest this:
"The code of those applications needs to be changed to perform XSetWindowBackgroundPixmap( dpy, window, ParentRelative ) on the X window that is used as the systray icon. There's nothing KDE can do about this, you need to ask the app developers to support this fake transparency."
(I fail to find an original source, only here: http://www.nabble.com/-Gaim-gtk- bugs----gaim-gtk-bugs-1370422---Tray-icon-not-transparent-in-KDE-p5884984.html)