ContextMenu 样式和模板

本主题介绍 ContextMenu 控件的样式和模板。 可以修改默认 ControlTemplate,使控件具有唯一的外观。 有关详细信息,请参阅 为控件创建模板。

ContextMenu 部件

ContextMenu 控件没有任何命名部件。

ContextMenu创建 ControlTemplate 时,模板可能包含 ScrollViewer中的 ItemsPresenter。 (ItemsPresenter 显示 ContextMenu中的每个项;ScrollViewer 在控件内启用滚动)。 如果 ItemsPresenter 不是 ScrollViewer的直接子级,则必须为 ItemsPresenter 赋予名称 ItemsPresenter

上下文菜单状态

下表列出了 ContextMenu 控件的视觉状态。

VisualState 名称 VisualStateGroup 名称 描述
有效 验证状态 控件使用 Validation 类,且 Validation.HasError 附加属性为 false
无效聚焦 验证状态 Validation.HasError 附加属性是 true 是否控件具有焦点。
无效焦点 验证状态 Validation.HasError 附加属性 true 控件没有焦点。

ContextMenu ControlTemplate 示例

以下示例演示如何为 ContextMenu 控件定义 ControlTemplate

<Style TargetType="{x:Type ContextMenu}">
  <Setter Property="SnapsToDevicePixels"
          Value="True" />
  <Setter Property="OverridesDefaultStyle"
          Value="True" />
  <Setter Property="Grid.IsSharedSizeScope"
          Value="true" />
  <Setter Property="HasDropShadow"
          Value="True" />
  <Setter Property="Template">
    <Setter.Value>
      <ControlTemplate TargetType="{x:Type ContextMenu}">
        <Border x:Name="Border"
                Background="{StaticResource MenuPopupBrush}"
                BorderThickness="1">
          <Border.BorderBrush>
            <SolidColorBrush Color="{StaticResource BorderMediumColor}" />
          </Border.BorderBrush>
          <StackPanel IsItemsHost="True"
                      KeyboardNavigation.DirectionalNavigation="Cycle" />
        </Border>
        <ControlTemplate.Triggers>
          <Trigger Property="HasDropShadow"
                   Value="true">
            <Setter TargetName="Border"
                    Property="Padding"
                    Value="0,3,0,3" />
            <Setter TargetName="Border"
                    Property="CornerRadius"
                    Value="4" />
          </Trigger>
        </ControlTemplate.Triggers>
      </ControlTemplate>
    </Setter.Value>
  </Setter>
</Style>

ControlTemplate 使用以下资源。

<!--Control colors.-->
<Color x:Key="WindowColor">#FFE8EDF9</Color>
<Color x:Key="ContentAreaColorLight">#FFC5CBF9</Color>
<Color x:Key="ContentAreaColorDark">#FF7381F9</Color>

<Color x:Key="DisabledControlLightColor">#FFE8EDF9</Color>
<Color x:Key="DisabledControlDarkColor">#FFC5CBF9</Color>
<Color x:Key="DisabledForegroundColor">#FF888888</Color>

<Color x:Key="SelectedBackgroundColor">#FFC5CBF9</Color>
<Color x:Key="SelectedUnfocusedColor">#FFDDDDDD</Color>

<Color x:Key="ControlLightColor">White</Color>
<Color x:Key="ControlMediumColor">#FF7381F9</Color>
<Color x:Key="ControlDarkColor">#FF211AA9</Color>

<Color x:Key="ControlMouseOverColor">#FF3843C4</Color>
<Color x:Key="ControlPressedColor">#FF211AA9</Color>


<Color x:Key="GlyphColor">#FF444444</Color>
<Color x:Key="GlyphMouseOver">sc#1, 0.004391443, 0.002428215, 0.242281124</Color>

<!--Border colors-->
<Color x:Key="BorderLightColor">#FFCCCCCC</Color>
<Color x:Key="BorderMediumColor">#FF888888</Color>
<Color x:Key="BorderDarkColor">#FF444444</Color>

<Color x:Key="PressedBorderLightColor">#FF888888</Color>
<Color x:Key="PressedBorderDarkColor">#FF444444</Color>

<Color x:Key="DisabledBorderLightColor">#FFAAAAAA</Color>
<Color x:Key="DisabledBorderDarkColor">#FF888888</Color>

<Color x:Key="DefaultBorderBrushDarkColor">Black</Color>

<!--Control-specific resources.-->
<Color x:Key="HeaderTopColor">#FFC5CBF9</Color>
<Color x:Key="DatagridCurrentCellBorderColor">Black</Color>
<Color x:Key="SliderTrackDarkColor">#FFC5CBF9</Color>

<Color x:Key="NavButtonFrameColor">#FF3843C4</Color>

<LinearGradientBrush x:Key="MenuPopupBrush"
                     EndPoint="0.5,1"
                     StartPoint="0.5,0">
  <GradientStop Color="{DynamicResource ControlLightColor}"
                Offset="0" />
  <GradientStop Color="{DynamicResource ControlMediumColor}"
                Offset="0.5" />
  <GradientStop Color="{DynamicResource ControlLightColor}"
                Offset="1" />
</LinearGradientBrush>

<LinearGradientBrush x:Key="ProgressBarIndicatorAnimatedFill"
                     StartPoint="0,0"
                     EndPoint="1,0">
  <LinearGradientBrush.GradientStops>
    <GradientStopCollection>
      <GradientStop Color="#000000FF"
                    Offset="0" />
      <GradientStop Color="#600000FF"
                    Offset="0.4" />
      <GradientStop Color="#600000FF"
                    Offset="0.6" />
      <GradientStop Color="#000000FF"
                    Offset="1" />
    </GradientStopCollection>
  </LinearGradientBrush.GradientStops>
</LinearGradientBrush>

有关完整示例,请参阅 使用 ControlTemplates 样式示例

另请参阅