如何删除菜单项的白色边框？

分类：编程问答

如何解决如何删除菜单项的白色边框？

我正在谈论这个。

File menu popup with a grey border.

我尝试过弄乱模板，但无法弄清楚。 到目前为止，这是我的 XAML。

<Border BorderThickness="0" HorizontalAlignment="Left" Height="30" Margin="3,30,0" Background="#242424" VerticalAlignment="Top" Width="660">
    <Menu HorizontalAlignment="Left" Height="27" VerticalAlignment="Top" FontFamily="Segoe UI" Width="645" Background="#FF242424" Margin="10,3,0">
        <MenuItem Header="File" FontSize="14" Padding="2" Foreground="White">
            <MenuItem Header="Save" BorderThickness="0" Background="#2d2d2d" Foreground="White"/>
            <MenuItem Header="Open" BorderThickness="0" Background="#2d2d2d" Foreground="White"/>
        </MenuItem>
    </Menu>
</Border>

解决方法

边框在 ControlTemplate 控件的 Menu 中声明。请参阅 official documentation 以应用自定义样式。

,

要删除边框，您必须编辑包含 Border 的控件模板。

<Border x:Name="SubMenuBorder" Background="{StaticResource Menu.Static.Background}" BorderThickness="0" BorderBrush="{StaticResource Menu.Static.Border}" Padding="2">

您注意到的边框实际上是由硬编码的 BorderThickness 和 Padding 引起的。

<Border x:Name="SubMenuBorder" Background="{StaticResource Menu.Static.Background}">

如果您在 MenuItem 的默认样式中删除 顶级标题模板和子菜单标题模板的那些，可见边框正如你在下面看到的那样。

Menu items without border.

您可以提取 MenuItem using Blend or Visual Studio 的默认样式和模板。然后你只需要调整上面的几行。这是为样式和模板改编的 XAML 代码：

<SolidColorBrush x:Key="Menu.Static.Background" Color="#FFF0F0F0"/>
<SolidColorBrush x:Key="Menu.Static.Border" Color="#FF999999"/>
<SolidColorBrush x:Key="Menu.Static.Foreground" Color="#FF212121"/>
<SolidColorBrush x:Key="Menu.Static.Separator" Color="#FFD7D7D7"/>
<SolidColorBrush x:Key="Menu.Disabled.Foreground" Color="#FF707070"/>
<SolidColorBrush x:Key="MenuItem.Selected.Background" Color="#3D26A0DA"/>
<SolidColorBrush x:Key="MenuItem.Selected.Border" Color="#FF26A0DA"/>
<SolidColorBrush x:Key="MenuItem.Highlight.Background" Color="#3D26A0DA"/>
<SolidColorBrush x:Key="MenuItem.Highlight.Border" Color="#FF26A0DA"/>
<SolidColorBrush x:Key="MenuItem.Highlight.Disabled.Background" Color="#0A000000"/>
<SolidColorBrush x:Key="MenuItem.Highlight.Disabled.Border" Color="#21000000"/>
<MenuScrollingVisibilityConverter x:Key="MenuScrollingVisibilityConverter"/>
<Geometry x:Key="DownArrow">M 0,0 L 3.5,4 L 7,0 Z</Geometry>
<Geometry x:Key="UpArrow">M 0,4 L 3.5,0 L 7,4 Z</Geometry>
<Geometry x:Key="RightArrow">M 0,0 L 4,3.5 L 0,7 Z</Geometry>
<Geometry x:Key="Checkmark">F1 M 10.0,1.2 L 4.7,9.1 L 4.5,9.1 L 0,5.2 L 1.3,3.5 L 4.3,6.1L 8.3,0 L 10.0,1.2 Z</Geometry>
<Style x:Key="MenuScrollButton" BasedOn="{x:Null}" TargetType="{x:Type RepeatButton}">
   <Setter Property="ClickMode" Value="Hover"/>
   <Setter Property="Template">
      <Setter.Value>
         <ControlTemplate TargetType="{x:Type RepeatButton}">
            <Border x:Name="templateRoot" Background="Transparent" BorderThickness="1" BorderBrush="Transparent" SnapsToDevicePixels="true">
               <ContentPresenter HorizontalAlignment="Center" Margin="6" VerticalAlignment="Center"/>
            </Border>
         </ControlTemplate>
      </Setter.Value>
   </Setter>
</Style>
<Style x:Key="{ComponentResourceKey ResourceId=MenuScrollViewer,TypeInTargetAssembly={x:Type FrameworkElement}}" BasedOn="{x:Null}" TargetType="{x:Type ScrollViewer}">
   <Setter Property="HorizontalScrollBarVisibility" Value="Hidden"/>
   <Setter Property="VerticalScrollBarVisibility" Value="Auto"/>
   <Setter Property="Template">
      <Setter.Value>
         <ControlTemplate TargetType="{x:Type ScrollViewer}">
            <Grid SnapsToDevicePixels="true">
               <Grid.ColumnDefinitions>
                  <ColumnDefinition Width="*"/>
               </Grid.ColumnDefinitions>
               <Grid.RowDefinitions>
                  <RowDefinition Height="Auto"/>
                  <RowDefinition Height="*"/>
                  <RowDefinition Height="Auto"/>
               </Grid.RowDefinitions>
               <Border Grid.Column="0" Grid.Row="1">
                  <ScrollContentPresenter CanContentScroll="{TemplateBinding CanContentScroll}" Margin="{TemplateBinding Padding}"/>
               </Border>
               <RepeatButton Command="{x:Static ScrollBar.LineUpCommand}" CommandTarget="{Binding RelativeSource={RelativeSource TemplatedParent}}" Grid.Column="0" Focusable="false" Grid.Row="0" Style="{StaticResource MenuScrollButton}">
                  <RepeatButton.Visibility>
                     <MultiBinding Converter="{StaticResource MenuScrollingVisibilityConverter}" ConverterParameter="0" FallbackValue="Visibility.Collapsed">
                        <Binding Path="ComputedVerticalScrollBarVisibility" RelativeSource="{RelativeSource TemplatedParent}"/>
                        <Binding Path="VerticalOffset" RelativeSource="{RelativeSource TemplatedParent}"/>
                        <Binding Path="ExtentHeight" RelativeSource="{RelativeSource TemplatedParent}"/>
                        <Binding Path="ViewportHeight" RelativeSource="{RelativeSource TemplatedParent}"/>
                     </MultiBinding>
                  </RepeatButton.Visibility>
                  <Path Data="{StaticResource UpArrow}" Fill="{StaticResource Menu.Static.Foreground}"/>
               </RepeatButton>
               <RepeatButton Command="{x:Static ScrollBar.LineDownCommand}" CommandTarget="{Binding RelativeSource={RelativeSource TemplatedParent}}" Grid.Column="0" Focusable="false" Grid.Row="2" Style="{StaticResource MenuScrollButton}">
                  <RepeatButton.Visibility>
                     <MultiBinding Converter="{StaticResource MenuScrollingVisibilityConverter}" ConverterParameter="100" FallbackValue="Visibility.Collapsed">
                        <Binding Path="ComputedVerticalScrollBarVisibility" RelativeSource="{RelativeSource TemplatedParent}"/>
                        <Binding Path="VerticalOffset" RelativeSource="{RelativeSource TemplatedParent}"/>
                        <Binding Path="ExtentHeight" RelativeSource="{RelativeSource TemplatedParent}"/>
                        <Binding Path="ViewportHeight" RelativeSource="{RelativeSource TemplatedParent}"/>
                     </MultiBinding>
                  </RepeatButton.Visibility>
                  <Path Data="{StaticResource DownArrow}" Fill="{StaticResource Menu.Static.Foreground}"/>
               </RepeatButton>
            </Grid>
         </ControlTemplate>
      </Setter.Value>
   </Setter>
</Style>
<ControlTemplate x:Key="{ComponentResourceKey ResourceId=TopLevelItemTemplateKey,TypeInTargetAssembly={x:Type MenuItem}}" TargetType="{x:Type MenuItem}">
   <Border x:Name="templateRoot" Background="{TemplateBinding Background}" BorderThickness="{TemplateBinding BorderThickness}" BorderBrush="{TemplateBinding BorderBrush}" SnapsToDevicePixels="true">
      <Grid VerticalAlignment="Center">
         <Grid.ColumnDefinitions>
            <ColumnDefinition Width="Auto"/>
            <ColumnDefinition Width="Auto"/>
         </Grid.ColumnDefinitions>
         <ContentPresenter x:Name="Icon" ContentSource="Icon" HorizontalAlignment="Center" Height="16" Margin="3" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" VerticalAlignment="Center" Width="16"/>
         <Path x:Name="GlyphPanel" Data="{StaticResource Checkmark}" FlowDirection="LeftToRight" Fill="{StaticResource Menu.Static.Foreground}" Margin="3" VerticalAlignment="Center" Visibility="Collapsed"/>
         <ContentPresenter ContentSource="Header" Grid.Column="1" Margin="{TemplateBinding Padding}" RecognizesAccessKey="True" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
      </Grid>
   </Border>
   <ControlTemplate.Triggers>
      <Trigger Property="Icon" Value="{x:Null}">
         <Setter Property="Visibility" TargetName="Icon" Value="Collapsed"/>
      </Trigger>
      <Trigger Property="IsChecked" Value="true">
         <Setter Property="Visibility" TargetName="GlyphPanel" Value="Visible"/>
         <Setter Property="Visibility" TargetName="Icon" Value="Collapsed"/>
      </Trigger>
      <Trigger Property="IsHighlighted" Value="True">
         <Setter Property="Background" TargetName="templateRoot" Value="{StaticResource MenuItem.Highlight.Background}"/>
         <Setter Property="BorderBrush" TargetName="templateRoot" Value="{StaticResource MenuItem.Highlight.Border}"/>
      </Trigger>
      <Trigger Property="IsEnabled" Value="False">
         <Setter Property="TextElement.Foreground" TargetName="templateRoot" Value="{StaticResource Menu.Disabled.Foreground}"/>
         <Setter Property="Fill" TargetName="GlyphPanel" Value="{StaticResource Menu.Disabled.Foreground}"/>
      </Trigger>
      <MultiTrigger>
         <MultiTrigger.Conditions>
            <Condition Property="IsHighlighted" Value="True"/>
            <Condition Property="IsEnabled" Value="False"/>
         </MultiTrigger.Conditions>
         <Setter Property="Background" TargetName="templateRoot" Value="{StaticResource MenuItem.Highlight.Disabled.Background}"/>
         <Setter Property="BorderBrush" TargetName="templateRoot" Value="{StaticResource MenuItem.Highlight.Disabled.Border}"/>
      </MultiTrigger>
   </ControlTemplate.Triggers>
</ControlTemplate>
<ControlTemplate x:Key="{ComponentResourceKey ResourceId=TopLevelHeaderTemplateKey,TypeInTargetAssembly={x:Type MenuItem}}" TargetType="{x:Type MenuItem}">
   <Border x:Name="templateRoot" Background="{TemplateBinding Background}" BorderThickness="{TemplateBinding BorderThickness}" BorderBrush="{TemplateBinding BorderBrush}" SnapsToDevicePixels="true">
      <Grid VerticalAlignment="Center">
         <Grid.ColumnDefinitions>
            <ColumnDefinition Width="Auto"/>
            <ColumnDefinition Width="Auto"/>
         </Grid.ColumnDefinitions>
         <ContentPresenter x:Name="Icon" ContentSource="Icon" HorizontalAlignment="Center" Height="16" Margin="3" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" VerticalAlignment="Center" Width="16"/>
         <Path x:Name="GlyphPanel" Data="{StaticResource Checkmark}" FlowDirection="LeftToRight" Fill="{TemplateBinding Foreground}" Margin="3" VerticalAlignment="Center" Visibility="Collapsed"/>
         <ContentPresenter ContentSource="Header" Grid.Column="1" Margin="{TemplateBinding Padding}" RecognizesAccessKey="True" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
         <Popup x:Name="PART_Popup" AllowsTransparency="true" Focusable="false" IsOpen="{Binding IsSubmenuOpen,RelativeSource={RelativeSource TemplatedParent}}" Placement="Bottom" PopupAnimation="{DynamicResource {x:Static SystemParameters.MenuPopupAnimationKey}}" PlacementTarget="{Binding ElementName=templateRoot}">
            <Border x:Name="SubMenuBorder" Background="{StaticResource Menu.Static.Background}">
               <ScrollViewer x:Name="SubMenuScrollViewer" Style="{DynamicResource {ComponentResourceKey ResourceId=MenuScrollViewer,TypeInTargetAssembly={x:Type FrameworkElement}}}">
                  <Grid RenderOptions.ClearTypeHint="Enabled">
                     <Canvas HorizontalAlignment="Left" Height="0" VerticalAlignment="Top" Width="0">
                        <Rectangle x:Name="OpaqueRect" Fill="{Binding Background,ElementName=SubMenuBorder}" Height="{Binding ActualHeight,ElementName=SubMenuBorder}" Width="{Binding ActualWidth,ElementName=SubMenuBorder}"/>
                     </Canvas>
                     <Rectangle Fill="{StaticResource Menu.Static.Separator}" HorizontalAlignment="Left" Margin="29,2,2" Width="1"/>
                     <ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Cycle" Grid.IsSharedSizeScope="true" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" KeyboardNavigation.TabNavigation="Cycle"/>
                  </Grid>
               </ScrollViewer>
            </Border>
         </Popup>
      </Grid>
   </Border>
   <ControlTemplate.Triggers>
      <Trigger Property="IsSuspendingPopupAnimation" Value="true">
         <Setter Property="PopupAnimation" TargetName="PART_Popup" Value="None"/>
      </Trigger>
      <Trigger Property="Icon" Value="{x:Null}">
         <Setter Property="Visibility" TargetName="Icon" Value="Collapsed"/>
      </Trigger>
      <Trigger Property="IsChecked" Value="true">
         <Setter Property="Visibility" TargetName="GlyphPanel" Value="Visible"/>
         <Setter Property="Visibility" TargetName="Icon" Value="Collapsed"/>
      </Trigger>
      <Trigger Property="IsHighlighted" Value="True">
         <Setter Property="Background" TargetName="templateRoot" Value="{StaticResource MenuItem.Highlight.Background}"/>
         <Setter Property="BorderBrush" TargetName="templateRoot" Value="{StaticResource MenuItem.Highlight.Border}"/>
      </Trigger>
      <Trigger Property="IsEnabled" Value="False">
         <Setter Property="TextElement.Foreground" TargetName="templateRoot" Value="{StaticResource Menu.Disabled.Foreground}"/>
         <Setter Property="Fill" TargetName="GlyphPanel" Value="{StaticResource Menu.Disabled.Foreground}"/>
      </Trigger>
      <Trigger Property="ScrollViewer.CanContentScroll" SourceName="SubMenuScrollViewer" Value="false">
         <Setter Property="Canvas.Top" TargetName="OpaqueRect" Value="{Binding VerticalOffset,ElementName=SubMenuScrollViewer}"/>
         <Setter Property="Canvas.Left" TargetName="OpaqueRect" Value="{Binding HorizontalOffset,ElementName=SubMenuScrollViewer}"/>
      </Trigger>
   </ControlTemplate.Triggers>
</ControlTemplate>
<ControlTemplate x:Key="{ComponentResourceKey ResourceId=SubmenuItemTemplateKey,TypeInTargetAssembly={x:Type MenuItem}}" TargetType="{x:Type MenuItem}">
   <Border x:Name="templateRoot" Background="{TemplateBinding Background}" BorderThickness="{TemplateBinding BorderThickness}" BorderBrush="{TemplateBinding BorderBrush}" Height="22" SnapsToDevicePixels="true">
      <Grid Margin="-1">
         <Grid.ColumnDefinitions>
            <ColumnDefinition MinWidth="22" SharedSizeGroup="MenuItemIconColumnGroup" Width="Auto"/>
            <ColumnDefinition Width="13"/>
            <ColumnDefinition Width="*"/>
            <ColumnDefinition Width="30"/>
            <ColumnDefinition SharedSizeGroup="MenuItemIGTColumnGroup" Width="Auto"/>
            <ColumnDefinition Width="20"/>
         </Grid.ColumnDefinitions>
         <ContentPresenter x:Name="Icon" ContentSource="Icon" HorizontalAlignment="Center" Height="16" Margin="3" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" VerticalAlignment="Center" Width="16"/>
         <Border x:Name="GlyphPanel" Background="{StaticResource MenuItem.Selected.Background}" BorderThickness="1" BorderBrush="{StaticResource MenuItem.Selected.Border}" ClipToBounds="False" HorizontalAlignment="Center" Height="22" Margin="-1,0" VerticalAlignment="Center" Visibility="Hidden" Width="22">
            <Path x:Name="Glyph" Data="{StaticResource Checkmark}" FlowDirection="LeftToRight" Fill="{StaticResource Menu.Static.Foreground}" Height="11" Width="10"/>
         </Border>
         <ContentPresenter x:Name="menuHeaderContainer" ContentSource="Header" Grid.Column="2" HorizontalAlignment="Left" Margin="{TemplateBinding Padding}" RecognizesAccessKey="True" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" VerticalAlignment="Center"/>
         <TextBlock x:Name="menuGestureText" Grid.Column="4" Margin="{TemplateBinding Padding}" Opacity="0.7" Text="{TemplateBinding InputGestureText}" VerticalAlignment="Center"/>
      </Grid>
   </Border>
   <ControlTemplate.Triggers>
      <Trigger Property="Icon" Value="{x:Null}">
         <Setter Property="Visibility" TargetName="Icon" Value="Collapsed"/>
      </Trigger>
      <Trigger Property="IsChecked" Value="True">
         <Setter Property="Visibility" TargetName="GlyphPanel" Value="Visible"/>
         <Setter Property="Visibility" TargetName="Icon" Value="Collapsed"/>
      </Trigger>
      <Trigger Property="IsHighlighted" Value="True">
         <Setter Property="Background" TargetName="templateRoot" Value="{StaticResource MenuItem.Highlight.Background}"/>
         <Setter Property="BorderBrush" TargetName="templateRoot" Value="{StaticResource MenuItem.Highlight.Border}"/>
      </Trigger>
      <Trigger Property="IsEnabled" Value="False">
         <Setter Property="TextElement.Foreground" TargetName="templateRoot" Value="{StaticResource Menu.Disabled.Foreground}"/>
         <Setter Property="Fill" TargetName="Glyph" Value="{StaticResource Menu.Disabled.Foreground}"/>
      </Trigger>
      <MultiTrigger>
         <MultiTrigger.Conditions>
            <Condition Property="IsHighlighted" Value="True"/>
            <Condition Property="IsEnabled" Value="False"/>
         </MultiTrigger.Conditions>
         <Setter Property="Background" TargetName="templateRoot" Value="{StaticResource MenuItem.Highlight.Disabled.Background}"/>
         <Setter Property="BorderBrush" TargetName="templateRoot" Value="{StaticResource MenuItem.Highlight.Disabled.Border}"/>
      </MultiTrigger>
   </ControlTemplate.Triggers>
</ControlTemplate>
<ControlTemplate x:Key="{ComponentResourceKey ResourceId=SubmenuHeaderTemplateKey,TypeInTargetAssembly={x:Type MenuItem}}" TargetType="{x:Type MenuItem}">
   <Border x:Name="templateRoot" Background="{TemplateBinding Background}" BorderThickness="{TemplateBinding BorderThickness}" BorderBrush="{TemplateBinding BorderBrush}" Height="22" SnapsToDevicePixels="true">
      <Grid Margin="-1">
         <Grid.ColumnDefinitions>
            <ColumnDefinition MinWidth="22" SharedSizeGroup="MenuItemIconColumnGroup" Width="Auto"/>
            <ColumnDefinition Width="13"/>
            <ColumnDefinition Width="*"/>
            <ColumnDefinition Width="30"/>
            <ColumnDefinition SharedSizeGroup="MenuItemIGTColumnGroup" Width="Auto"/>
            <ColumnDefinition Width="20"/>
         </Grid.ColumnDefinitions>
         <ContentPresenter x:Name="Icon" ContentSource="Icon" HorizontalAlignment="Center" Height="16" Margin="3" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" VerticalAlignment="Center" Width="16"/>
         <Border x:Name="GlyphPanel" Background="{StaticResource MenuItem.Highlight.Background}" BorderThickness="1" BorderBrush="{StaticResource MenuItem.Highlight.Border}" Height="22" Margin="-1,0" VerticalAlignment="Center" Visibility="Hidden" Width="22">
            <Path x:Name="Glyph" Data="{DynamicResource Checkmark}" FlowDirection="LeftToRight" Fill="{StaticResource Menu.Static.Foreground}" Height="11" Width="9"/>
         </Border>
         <ContentPresenter ContentSource="Header" Grid.Column="2" HorizontalAlignment="Left" Margin="{TemplateBinding Padding}" RecognizesAccessKey="True" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" VerticalAlignment="Center"/>
         <TextBlock Grid.Column="4" Margin="{TemplateBinding Padding}" Opacity="0.7" Text="{TemplateBinding InputGestureText}" VerticalAlignment="Center"/>
         <Path x:Name="RightArrow" Grid.Column="5" Data="{StaticResource RightArrow}" Fill="{StaticResource Menu.Static.Foreground}" HorizontalAlignment="Left" Margin="10,0" VerticalAlignment="Center"/>
         <Popup x:Name="PART_Popup" AllowsTransparency="true" Focusable="false" HorizontalOffset="-2" IsOpen="{Binding IsSubmenuOpen,RelativeSource={RelativeSource TemplatedParent}}" Placement="Right" PopupAnimation="{DynamicResource {x:Static SystemParameters.MenuPopupAnimationKey}}" VerticalOffset="-3">
            <Border x:Name="SubMenuBorder" Background="{StaticResource Menu.Static.Background}">
               <ScrollViewer x:Name="SubMenuScrollViewer" Style="{DynamicResource {ComponentResourceKey ResourceId=MenuScrollViewer,ElementName=SubMenuBorder}"/>
                     </Canvas>
                     <Rectangle Fill="{DynamicResource {x:Static SystemColors.ControlDarkBrushKey}}" HorizontalAlignment="Left" Margin="29,2" Width="1"/>
                     <ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Cycle" Grid.IsSharedSizeScope="true" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" KeyboardNavigation.TabNavigation="Cycle"/>
                  </Grid>
               </ScrollViewer>
            </Border>
         </Popup>
      </Grid>
   </Border>
   <ControlTemplate.Triggers>
      <Trigger Property="IsSuspendingPopupAnimation" Value="true">
         <Setter Property="PopupAnimation" TargetName="PART_Popup" Value="None"/>
      </Trigger>
      <Trigger Property="Icon" Value="{x:Null}">
         <Setter Property="Visibility" TargetName="Icon" Value="Collapsed"/>
      </Trigger>
      <Trigger Property="IsChecked" Value="True">
         <Setter Property="Visibility" TargetName="GlyphPanel" Value="Visible"/>
         <Setter Property="Visibility" TargetName="Icon" Value="Collapsed"/>
      </Trigger>
      <Trigger Property="IsHighlighted" Value="True">
         <Setter Property="Background" TargetName="templateRoot" Value="Transparent"/>
         <Setter Property="BorderBrush" TargetName="templateRoot" Value="{StaticResource MenuItem.Highlight.Border}"/>
      </Trigger>
      <Trigger Property="IsEnabled" Value="False">
         <Setter Property="TextElement.Foreground" TargetName="templateRoot" Value="{StaticResource Menu.Disabled.Foreground}"/>
         <Setter Property="Fill" TargetName="Glyph" Value="{StaticResource Menu.Disabled.Foreground}"/>
         <Setter Property="Fill" TargetName="RightArrow" Value="{StaticResource Menu.Disabled.Foreground}"/>
      </Trigger>
      <Trigger Property="ScrollViewer.CanContentScroll" SourceName="SubMenuScrollViewer" Value="false">
         <Setter Property="Canvas.Top" TargetName="OpaqueRect" Value="{Binding VerticalOffset,ElementName=SubMenuScrollViewer}"/>
      </Trigger>
   </ControlTemplate.Triggers>
</ControlTemplate>
<Style TargetType="{x:Type MenuItem}">
   <Setter Property="HorizontalContentAlignment" Value="{Binding HorizontalContentAlignment,RelativeSource={RelativeSource AncestorType={x:Type ItemsControl}}}"/>
   <Setter Property="VerticalContentAlignment" Value="{Binding VerticalContentAlignment,RelativeSource={RelativeSource AncestorType={x:Type ItemsControl}}}"/>
   <Setter Property="Background" Value="Transparent"/>
   <Setter Property="BorderBrush" Value="Transparent"/>
   <Setter Property="BorderThickness" Value="1"/>
   <Setter Property="ScrollViewer.PanningMode" Value="Both"/>
   <Setter Property="Stylus.IsFlicksEnabled" Value="False"/>
   <Setter Property="Template" Value="{DynamicResource {ComponentResourceKey ResourceId=SubmenuItemTemplateKey,TypeInTargetAssembly={x:Type MenuItem}}}"/>
   <Style.Triggers>
      <Trigger Property="Role" Value="TopLevelHeader">
         <Setter Property="Background" Value="Transparent"/>
         <Setter Property="BorderBrush" Value="Transparent"/>
         <Setter Property="Foreground" Value="{StaticResource Menu.Static.Foreground}"/>
         <Setter Property="Template" Value="{DynamicResource {ComponentResourceKey ResourceId=TopLevelHeaderTemplateKey,TypeInTargetAssembly={x:Type MenuItem}}}"/>
         <Setter Property="Padding" Value="6,0"/>
      </Trigger>MenuItem
      <Trigger Property="Role" Value="TopLevelItem">
         <Setter Property="Background" Value="{StaticResource Menu.Static.Background}"/>
         <Setter Property="BorderBrush" Value="{StaticResource Menu.Static.Border}"/>
         <Setter Property="Foreground" Value="{StaticResource Menu.Static.Foreground}"/>
         <Setter Property="Template" Value="{DynamicResource {ComponentResourceKey ResourceId=TopLevelItemTemplateKey,0"/>
      </Trigger>
      <Trigger Property="Role" Value="SubmenuHeader">
         <Setter Property="Template" Value="{DynamicResource {ComponentResourceKey ResourceId=SubmenuHeaderTemplateKey,TypeInTargetAssembly={x:Type MenuItem}}}"/>
      </Trigger>
   </Style.Triggers>
</Style>

将代码复制到范围内的资源字典。 MenuItem 的样式是隐式的，因此它会自动应用于范围内的所有 MenuItems。如果您只想有选择地应用此样式，请添加 x:Key 以使其明确并通过 StaticResource 或 DynamicResource 标记扩展引用它。

当然，您可以使用 documentation 中关于 MenuItem 的样式和模板的指导来滚动您自己的自定义菜单项样式，该样式和模板具有所需的状态和部分，但这是一项复杂的任务，并且容易出现错误，因此可以更轻松地复制和调整默认样式。

版权声明：本文内容由互联网用户自发贡献，该文观点与技术仅代表作者本人。本站仅提供信息存储空间服务，不拥有所有权，不承担相关法律责任。如发现本站有涉嫌侵权/违法违规的内容， 请发送邮件至 dio@foxmail.com 举报，一经查实，本站将立刻删除。

相关推荐

matplotlib报错：AttributeError: module 'backend_interagg' has no attribute 'FigureCanvas'. Did you mean: 'FigureCanvasAgg'?
使用本地python环境可以成功执行 import pandas as pd import matplotlib.pyplot as plt # 设置字体 plt.rcParams[&#39;font.sans-serif&#39;] = [&#39;SimHei&#39;] # 能正确显示负号 p
gitlab登录失败，报错：This challenge page was accidentally cached by an intermediary and is no longer available.
设置时间 控制面板
后端开发常见错误
错误1：Request method ‘DELETE‘ not supported 错误还原：controller层有一个接口，访问该接口时报错：Request method ‘DELETE‘ not supported 错误原因：没有接收到前端传入的参数，修改为如下 参考 错误2：cannot r
docker常见错误
错误1：启动docker镜像时报错：Error response from daemon: driver failed programming external connectivity on endpoint quirky_allen 解决方法：重启docker -&gt; systemctl r
idea常见错误
错误1：private field ‘xxx‘ is never assigned 按Altʾnter快捷键，选择第2项 参考：https://blog.csdn.net/shi_hong_fei_hei/article/details/88814070 错误2：启动时报错，不能找到主启动类 #
pip安装依赖失败
报错如下，通过源不能下载，最后警告pip需升级版本 Requirement already satisfied: pip in c:\users\ychen\appdata\local\programs\python\python310\lib\site-packages (22.0.4) Coll
maven常见错误
错误1：maven打包报错 错误还原：使用maven打包项目时报错如下 [ERROR] Failed to execute goal org.apache.maven.plugins:maven-resources-plugin:3.2.0:resources (default-resources)
cloud项目中常见错误
错误1：服务调用时报错 服务消费者模块assess通过openFeign调用服务提供者模块hires 如下为服务提供者模块hires的控制层接口 @RestController @RequestMapping(&quot;/hires&quot;) public class FeignControl
springboot常见错误
错误1：运行项目后报如下错误 解决方案 报错2：Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.8.1:compile (default-compile) on project sb 解决方案：在pom.
springmvc拦截器中使用redisTemplate报空指针异常
参考 错误原因 过滤器或拦截器在生效时，redisTemplate还没有注入 解决方案：在注入容器时就生效 @Component //项目运行时就注入Spring容器 public class RedisBean { @Resource private RedisTemplate&lt;String
vite报错：npm ERR! command C:WINDOWSsystem32cmd.exe /d /s /c C:UsersychenAppDataLocalTempnpx-dde1c848.cmd
使用vite构建项目报错 C:\Users\ychen\work&gt;npm init @vitejs/app @vitejs/create-app is deprecated, use npm init vite instead C:\Users\ychen\AppData\Local\npm-
VM VirtualBox中安装centos时报错：设置基础软件仓库时出错
参考1 参考2 解决方案 # 点击安装源 协议选择 http:// 路径填写 mirrors.aliyun.com/centos/8.3.2011/BaseOS/x86_64/os URL类型 软件库URL 其他路径 # 版本 7 mirrors.aliyun.com/centos/7/os/x86
kafka常见问题
报错1 [root@slave1 data_mocker]# kafka-console-consumer.sh --bootstrap-server slave1:9092 --topic topic_db [2023-12-19 18:31:12,770] WARN [Consumer clie
hive常见问题
错误1 # 重写数据 hive (edu)&gt; insert overwrite table dwd_trade_cart_add_inc &gt; select data.id, &gt; data.user_id, &gt; data.course_id, &gt; date_format(
装载数据时报错：Failed to execute spark task, with exception 'org.apache.hadoop.hive.ql.metadata.HiveException(Failed to create spark client.)'
错误1 hive (edu)&gt; insert into huanhuan values(1,&#39;haoge&#39;); Query ID = root_20240110071417_fe1517ad-3607-41f4-bdcf-d00b98ac443e Total jobs = 1
flume常见问题
报错1：执行到如下就不执行了，没有显示Successfully registered new MBean. [root@slave1 bin]# /usr/local/software/flume-1.9.0/bin/flume-ng agent -n a1 -c /usr/local/softwa
hadoop集群常见错误
虚拟及没有启动任何服务器查看jps会显示jps，如果没有显示任何东西 [root@slave2 ~]# jps 9647 Jps 解决方案 # 进入/tmp查看 [root@slave1 dfs]# cd /tmp [root@slave1 tmp]# ll 总用量 48 drwxr-xr-x. 2
hive常见错误
报错1 hive&gt; show databases; OK Failed with exception java.io.IOException:java.lang.RuntimeException: Error in configuring object Time taken: 0.474 se
Linux常见错误
报错1 [root@localhost ~]# vim -bash: vim: 未找到命令 安装vim yum -y install vim* # 查看是否安装成功 [root@hadoop01 hadoop]# rpm -qa |grep vim vim-X11-7.4.629-8.el7_9.x
使用sqoop一直卡在：mapreduce.Job: Running job: job_1703173956074_0001
修改hadoop配置 vi /usr/local/software/hadoop-2.9.2/etc/hadoop/yarn-site.xml # 添加如下 &lt;configuration&gt; &lt;property&gt; &lt;name&gt;yarn.nodemanager.res
pythonJavaScriptjavaHTMLPHPreactjsC#AndroidCSSNode.jssqlrpython-3.xMysqLjQueryc++pandasFlutterangularIOSdjangolinuxswifttypescript路由器JSON路由器设置无线路由器h3c华三华三路由器设置华三路由器电脑软件教程arraysdocker软件图文教程Cvue.jslaravelspring-boot