Extending the window's frame is a design trend that is becoming popular in modern applications - especially browsers. Every major browser today (Chrome, Firefox, Internet Explorer, and Opera) uses this technique to increase the visual quality of their applications.
Today we're going to see how to duplicate this look in WPF. The approach we're going to take relies on the OS supporting Aero, which means only Vista and Windows 7 are supported. For Windows XP, you're going to have to find another solution.