wpfwindowfullscreenborderless

Borderless window application takes up more space than my screen resolution


I have created a borderless application in WPF, and it works pretty good. However, when I set the WindowState to full screen, the application takes up more space than my screen resolution, so there are some pixels outside the screen in all directions! (looks like some hard coded negative margins are added to hide the default border)

Any Ideas how to prevent this from happening?

My xaml:

<Window x:Class="MyApp.Shell"
    WindowStyle="None"
    BorderThickness="0"
    AllowsTransparency="True"
    Background="Transparent"
    ResizeMode="CanResizeWithGrip"
    WindowState="{Binding MainApplicationWindowState}"
    ...

Also, another problem I have seen is that the Windows toolbar / taskbar is covered in the fullsize state, so it looks like the "actual" screen height is used and not the "available" screen height, meaning screen height minus the windows toolbar / taskbar!

Anyone found a solution to these issues?

Thanks


Solution

  • I solved the problem this way:

    XAML:

    WindowStyle="None"
    Left="0"
    Top="0"
    Width="{Binding WPFSettings.Width}"
    Height="{Binding WPFSettings.Height}">
    

    Visual Basic:

    Public Class WPFSettings
       Public ReadOnly Property Width() As Double
          Get
             Return System.Windows.SystemParameters.PrimaryScreenWidth
          End Get
       End Property
    
       Public ReadOnly Property Height() As Double
          Get
             Return System.Windows.SystemParameters.PrimaryScreenHeight
          End Get
       End Property
    End Class
    

    It works pretty good.