Windows 7 taskbar buttons are drawn on a shaded background. The color shade somehow reacts on where the mouse is over the button.
I\'d like to use such buttons in my
Perhaps try
DrawThemeBackground
http://msdn.microsoft.com/en-us/library/bb773289(VS.85).aspx
Give it the BS_PUSHBUTTON constant. I've used this in Windows XP to draw the plush blue XP themed controls, but not in Aero, but it's worth a try.