This sample shows how to use 32-bit (alpha channel) images with toolbars and command bars. It also displays them only if running on Windows XP with themes enabled, while it displays standard 4-bit images in other cases.

xp风格的outbar，非常好用，谢谢使用，谁用谁知道-A themed Outlook Bar for WTL (works even without themes). .

WINDOWS xaml themes example with visual studio 2010