Diagnostic Explorer

<Application xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
             xmlns:ldsc="clr-namespace:DiagnosticExplorer.Silverlight.Controls"
             x:Class="DiagnosticExplorer.Silverlight.App">
    <Application.Resources>
      <Style x:Key="GroupBoxStyle" TargetType="ldsc:GroupBox">
        <Setter Property="BorderBrush" Value="DarkGray"/>
        <Setter Property="BorderThickness" Value="1"/>
        <Setter Property="Padding" Value="6"/>
        <Setter Property="Template">
          <Setter.Value>
            <ControlTemplate TargetType="ldsc:GroupBox">
              <Grid Background="{TemplateBinding Background}">
                <Grid.RowDefinitions>
                  <RowDefinition Height="Auto"/>
                  <RowDefinition Height="Auto"/>
                  <RowDefinition Height="*"/>
                </Grid.RowDefinitions>
                <Border BorderThickness="{TemplateBinding BorderThickness}" Grid.Row="1" Grid.RowSpan="2" BorderBrush="{TemplateBinding BorderBrush}" CornerRadius="3">
                  <Border.Clip>
                    <GeometryGroup FillRule="EvenOdd">
                      <RectangleGeometry x:Name="FullRect" Rect="0,0,300,200"/>
                      <RectangleGeometry x:Name="HeaderRect" Rect="6,0,100,100"/>
                    </GeometryGroup>
                  </Border.Clip>
                </Border>
                <ContentPresenter Grid.Row="2" ContentTemplate="{TemplateBinding ContentTemplate}" Content="{TemplateBinding Content}" Margin="{TemplateBinding Padding}"/>
                <ContentControl x:Name="HeaderContainer" Margin="6,0,0,0" Grid.Row="0" Grid.RowSpan="2" HorizontalAlignment="Left">
                  <ContentPresenter Margin="3,0,3,0" ContentTemplate="{TemplateBinding HeaderTemplate}" Content="{TemplateBinding Header}"/>
                </ContentControl>
              </Grid>
            </ControlTemplate>
          </Setter.Value>
        </Setter>
      </Style>
    </Application.Resources>
</Application>