In WPF XAML, WindowStyle can be None, SingleBorderWindow, ThreeDBorderWindow, ToolWindow.
I tried the options myself and also looked into MSDN, yet I cannot tell any difference visually between ThreeDBorderWindow and SingleBorderWindow. The “ThreeDBorder” looks just as 2-D as SingelBorder. What are their difference?
You have to switch to Windows Classic theme to see the difference. If you are using a “modern” theme like Windows 7 there is no difference.
Below you have the
SingleBorderWindowto the left andThreeDBorderWindowto the right when using Windows Classic theme on my computer. (The innermost gray border is from a control in the window and is not part of the window border.)The “3D” border has an inside highlight that I guess gives it a raised or three dimensional look.