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?

score 19 · Accepted Answer · edited Jan 17 '22 at 19:29

19

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" >

edited Jan 17 '22 at 19:29

live2

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answered Jul 28 '09 at 19:08

Jon Galloway

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That looks like a cool project. I'd never heard of it before. – Bryan Anderson Jul 28 '09 at 19:31
The project is cool, but have some problems like the windows covering the taskbar when maximized. UseMicrosoft WPF Shell Integration Library instead http://archive.msdn.microsoft.com/WPFShell – Eduardo Molteni Mar 15 '11 at 00:20
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Using a 3rd party library is never a solution. – Steven Borges Feb 12 '16 at 14:29

John Myczek · Answer 2 · 2009-07-28T19:07:57.940

14

Try setting AllowsTransparency to True on the Window.

edited Jul 28 '09 at 19:07

answered Jul 28 '09 at 19:01

John Myczek

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This for the tip. That's not the answer though as AllowTransparency=true disables resizing. – tom greene Jul 28 '09 at 20:46
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Yes, you lose resizing from the window edges, but you can still resize with the grip. You can handle resizing from the wnidow edges yourself, if you are interested I can post the code. – John Myczek Jul 29 '09 at 13:25
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@JohnMyczek could you post the code of resizing window when AllowsTransparency is set to True? – Tomas Feb 27 '15 at 16:43

score 11 · Answer 3 · edited May 23 '17 at 11:46

11

I found a better answer. No need to mess around with ResizeMode. No need for interop calls. No need to set AllowsTransparency which can have side effects.

<WindowChrome.WindowChrome>
 <WindowChrome CaptionHeight="0" ResizeBorderThickness="5" />
</WindowChrome.WindowChrome>

I took this answer from this thread: How to create a WPF Window without a border that can be resized via a grip only?

I repost it here for people who land here searching google.

edited May 23 '17 at 11:46

Community

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answered Oct 13 '16 at 02:42

Jonathan Alfaro

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Best answer! With winformshost support – Luca Ziegler Mar 14 '17 at 08:24

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

3 Answers3