小编Waj*_*han的帖子

我已经编辑了标准的GroupBox模板,因为我想自定义它.除了其他自定义,我希望GroupBox标题在中心而不是左或右水平对齐.Header的对齐不是问题,但真正的问题是为Border控件定义的OpacityMask.不透明蒙版设置组框标题后面的透明空间,其中未绘制边框.当我将标题设置为中心时,我无法弄清楚如何在组框标题后面放置透明空格/间隙.

以下是我的XAML的样子:(请导航到以"Border.OpacityMask"开头的部分,该部分设置标题周围边框的透明间隙)

<ControlTemplate x:Key="GroupBoxControlTemplate1" TargetType="{x:Type GroupBox}">
<Grid SnapsToDevicePixels="True">
    <Grid.ColumnDefinitions>
        <ColumnDefinition Width="6"/>
        <ColumnDefinition Width="Auto"/>
        <ColumnDefinition Width="*"/>
        <ColumnDefinition Width="6"/>
    </Grid.ColumnDefinitions>
    <Grid.RowDefinitions>
        <RowDefinition Height="Auto"/>
        <RowDefinition Height="Auto"/>
        <RowDefinition Height="*"/>
        <RowDefinition Height="6"/>
    </Grid.RowDefinitions>

    <Border Background="{TemplateBinding Background}" BorderBrush="Transparent" 
     BorderThickness="{TemplateBinding BorderThickness}" 
     CornerRadius="4" Grid.Column="1    " Grid.ColumnSpan="4" 
     Grid.Row="1" Grid.RowSpan="3" HorizontalAlignment="Stretch"/>

    <Border x:Name="Header" Grid.Column="2" Grid.RowSpan="2" HorizontalAlignment="Left" 
        Padding="3,1,3,0" VerticalAlignment="Stretch">
        <Border.Effect>
            <DropShadowEffect BlurRadius="10" Direction="334"/>
        </Border.Effect>
        <ContentPresenter SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" 
         Content="{TemplateBinding Header}" 
         ContentSource="Header" 
         ContentStringFormat="{TemplateBinding HeaderStringFormat}" 
         ContentTemplate="{TemplateBinding HeaderTemplate}" 
         RecognizesAccessKey="True" Height="Auto" 
         VerticalAlignment="Center"
         HorizontalAlignment="Center"
         OpacityMask="#FF3844BD" Margin="0,1,0,0">
        </ContentPresenter>
    </Border>

    <ContentPresenter Margin="{TemplateBinding Padding}" 
        SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" 
        Content="{TemplateBinding Content}" 
        ContentStringFormat="{TemplateBinding ContentStringFormat}" …