KWin
KWin
KWin is the windowmanager of KDE. It paints the windowdecoration, the bar on top of every window with (configurable) buttons like close, maximize and minimize. It also handles placing of windows and switching between them.
Compositing
KWin supports compositing, which means using 3D effects for handling your windows. This can make windowmanagement smoother, easier, more efficient and more natural. It’s hardware requirements are very modest and pretty much every reasonably modern system since 2002 supports it. There are still some issues with certain hardware, more info about that can be found on techbase
New in KDE 4.2
Information about what's new in KDE 4.2 can be found at the following links:
Hints & Tips
You want an application to launch in the same screen position every time
Sometimes the screen position of an application is vital to your comfort, so use the flexibility of kwin to make sure it's always where you want it.
Position the window where you want it to open, then right-click on the title-bar, choosing Advanced > Special Window Settings. This will open a settings window, with appropriate entries already made. All you need to do now is select the Geometry tab and check Position and Size. OK - you're finished!