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Gör så här: Definiera en GroupBox-mall

Det här exemplet visar hur du skapar en mall för en GroupBox kontroll.

Exempel

I följande exempel definieras en GroupBox kontrollmall med hjälp av en Grid kontroll för layout. Mallen använder en BorderGapMaskConverter för att definiera kantlinjen för GroupBox så att kantlinjen inte döljer Header innehåll.

<!--=================================================================
    GroupBox Template Example
==================================================================-->
<BorderGapMaskConverter x:Key="BorderGapMaskConverter"/>
<Style x:Key="{x:Type GroupBox}"
       TargetType="{x:Type GroupBox}">
  <Setter Property="BorderBrush"
          Value="Gray"/>
  <Setter Property="Foreground"
          Value="White"/>
  <Setter Property="BorderThickness"
          Value="1"/>
  <Setter Property="Template">
    <Setter.Value>
      <ControlTemplate TargetType="{x:Type GroupBox}">
        <Grid>
          <Grid.ColumnDefinitions>
            <ColumnDefinition Width="4"/>
            <ColumnDefinition Width="Auto"/>
            <ColumnDefinition Width="*"/>
            <ColumnDefinition Width="4"/>
          </Grid.ColumnDefinitions>
          <Grid.RowDefinitions>
            <RowDefinition Height="Auto"/>
            <RowDefinition Height="Auto"/>
            <RowDefinition Height="*"/>
            <RowDefinition Height="4"/>
          </Grid.RowDefinitions>
          <Border CornerRadius="4"
                  Grid.Row="1"
                  Grid.RowSpan="3"
                  Grid.Column="0"
                  Grid.ColumnSpan="4"
                  BorderThickness="{TemplateBinding BorderThickness}"
                  BorderBrush="Transparent"
                  Background="{TemplateBinding Background}"/>
          <!-- ContentPresenter for the header -->
          <Border x:Name="Header"
                  Padding="6,0,6,0"
                  Grid.Row="0"
                  Grid.RowSpan="2"
                  Grid.Column="1">
            <ContentPresenter ContentSource="Header" 
                              RecognizesAccessKey="True" />
          </Border>
          <!-- Primary content for GroupBox -->
          <ContentPresenter Grid.Row="2"
                            Grid.Column="1"
                            Grid.ColumnSpan="2"
                            Margin="{TemplateBinding Padding}"/>
          <Border CornerRadius="0"
                  Grid.Row="1"
                  Grid.RowSpan="3"
                  Grid.ColumnSpan="4"
                  BorderThickness="{TemplateBinding BorderThickness}"
                  BorderBrush="{TemplateBinding BorderBrush}">
            <Border.OpacityMask>
              <MultiBinding Converter=
                            "{StaticResource BorderGapMaskConverter}"
                            ConverterParameter="6">
                <Binding ElementName="Header"
                         Path="ActualWidth"/>
                <Binding RelativeSource="{RelativeSource Self}"
                         Path="ActualWidth"/>
                <Binding RelativeSource="{RelativeSource Self}"
                         Path="ActualHeight"/>
              </MultiBinding>
            </Border.OpacityMask>
          </Border>
        </Grid>
      </ControlTemplate>
    </Setter.Value>
  </Setter>
</Style>

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