How can I remove the border of a WPF window when using luna or classic?

Question

When I display a WPF window with WindowStyle="None", it looks great when using areo.

However, when I use luna or classic, it displays an ugly gray border about 5 pixels wide.

Of course, if I set ResizeMode="NoResize", this border disappears but I would like the window to be resizable (ResizeMode="CanResize").

Other non WPF applications (live mail, ie, firefox etc) do not display this gray border but are still resizable.

Is there a way to remove this border while still being resizable?

Answer 1

Try setting AllowsTransparency to True on the Window.

Answer 2

I'm using the WPF Customizable Window's Essential Window. Here's my window declaration (abbreviated):

 <CustomWindow:EssentialWindow 
   xmlns:aero="clr-namespace:Microsoft.Windows.Themes;assembly=PresentationFramework.Aero"
   xmlns:CustomWindow="clr-namespace:CustomWindow;assembly=CustomWindow"
   AllowsTransparency="True" Background="Transparent" 
   ResizeMode="CanResizeWithGrip"
   WindowStyle="None"
   ShowInTaskbar="True" >