Question

所以我有这个按钮：

我需要删除那个蓝色矩形。我尝试添加以下事件触发器（IsMouseOver和IsFocused），并将背景设置为透明：

    <Style x:Key="ButtonStyle" TargetType="Button">

        <Setter Property="FocusVisualStyle" Value="{x:Null}" />
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="Button">
                    <Border Name="Border" Padding="0" SnapsToDevicePixels="true">
                        <ContentPresenter />
                    </Border>
                    <ControlTemplate.Triggers>
                        <Trigger Property="IsMouseOver" Value="true">
                            <Setter TargetName="Border" Property="Background" Value="Transparent"/>
                        </Trigger>
                        <Trigger Property="IsFocused" Value="True">
                            <Setter TargetName="Border" Property="Background" Value="Transparent" />
                            <Setter Property="Background" Value="Transparent" />

                        </Trigger>
                    </ControlTemplate.Triggers>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>

按钮位于此菜单中：

   <Menu HorizontalAlignment="Left" Height="40" Margin="0,80,0,0" VerticalAlignment="Top" Width="700" Background="WhiteSmoke">
        <Button x:Name="OrderBy" Content="Order By" Width="75" Margin="0,8,0,0"  Style="{DynamicResource ButtonStyle}"/>
        <GridSplitter Height="20" Width="1" Background="Black" Margin="0,8,0,0"/>
        <Button x:Name="Refresh" Content="Refresh" Width="75" Margin="0,8,0,0"/>
        <TextBox x:Name="Search" Height="23" TextWrapping="Wrap" Text="Search" Width="240"  Margin="250,8,0,0" HorizontalAlignment="Right"/>
    </Menu>

我是WPF的新手，我已经搜索了很多，试图找到答案。谢谢你的帮助！

Answer 1

您必须为MenuItem重写ControlTemplate，即TopLevelItemTemplate，并在Trigger中将IsHighlighted Border的背景设置为透明。突出显示来自MenuItem而非来自Button。尝试将其添加到菜单的资源中：

        <LinearGradientBrush x:Key="NormalBrush" StartPoint="0,0" EndPoint="0,1">
            <GradientBrush.GradientStops>
                <GradientStopCollection>
                    <GradientStop Color="#FFF" Offset="0.0"/>
                    <GradientStop Color="#CCC" Offset="1.0"/>
                </GradientStopCollection>
            </GradientBrush.GradientStops>
        </LinearGradientBrush>

        <LinearGradientBrush x:Key="HorizontalNormalBrush" StartPoint="0,0" EndPoint="1,0">
            <GradientBrush.GradientStops>
                <GradientStopCollection>
                    <GradientStop Color="#FFF" Offset="0.0"/>
                    <GradientStop Color="#CCC" Offset="1.0"/>
                </GradientStopCollection>
            </GradientBrush.GradientStops>
        </LinearGradientBrush>

        <LinearGradientBrush x:Key="LightBrush" StartPoint="0,0" EndPoint="0,1">
            <GradientBrush.GradientStops>
                <GradientStopCollection>
                    <GradientStop Color="#FFF" Offset="0.0"/>
                    <GradientStop Color="#EEE" Offset="1.0"/>
                </GradientStopCollection>
            </GradientBrush.GradientStops>
        </LinearGradientBrush>

        <LinearGradientBrush x:Key="HorizontalLightBrush" StartPoint="0,0" EndPoint="1,0">
            <GradientBrush.GradientStops>
                <GradientStopCollection>
                    <GradientStop Color="#FFF" Offset="0.0"/>
                    <GradientStop Color="#EEE" Offset="1.0"/>
                </GradientStopCollection>
            </GradientBrush.GradientStops>
        </LinearGradientBrush>

        <LinearGradientBrush x:Key="DarkBrush" StartPoint="0,0" EndPoint="0,1">
            <GradientBrush.GradientStops>
                <GradientStopCollection>
                    <GradientStop Color="#FFF" Offset="0.0"/>
                    <GradientStop Color="#AAA" Offset="1.0"/>
                </GradientStopCollection>
            </GradientBrush.GradientStops>
        </LinearGradientBrush>

        <LinearGradientBrush x:Key="PressedBrush" StartPoint="0,0" EndPoint="0,1">
            <GradientBrush.GradientStops>
                <GradientStopCollection>
                    <GradientStop Color="#BBB" Offset="0.0"/>
                    <GradientStop Color="#EEE" Offset="0.1"/>
                    <GradientStop Color="#EEE" Offset="0.9"/>
                    <GradientStop Color="#FFF" Offset="1.0"/>
                </GradientStopCollection>
            </GradientBrush.GradientStops>
        </LinearGradientBrush>

        <SolidColorBrush x:Key="DisabledForegroundBrush" Color="#888" />

        <SolidColorBrush x:Key="DisabledBackgroundBrush" Color="#EEE" />

        <SolidColorBrush x:Key="WindowBackgroundBrush" Color="#FFF" />

        <SolidColorBrush x:Key="SelectedBackgroundBrush" Color="#DDD" />

        <!-- Border Brushes -->

        <LinearGradientBrush x:Key="NormalBorderBrush" StartPoint="0,0" EndPoint="0,1">
            <GradientBrush.GradientStops>
                <GradientStopCollection>
                    <GradientStop Color="#CCC" Offset="0.0"/>
                    <GradientStop Color="#444" Offset="1.0"/>
                </GradientStopCollection>
            </GradientBrush.GradientStops>
        </LinearGradientBrush>

        <LinearGradientBrush x:Key="HorizontalNormalBorderBrush" StartPoint="0,0" EndPoint="1,0">
            <GradientBrush.GradientStops>
                <GradientStopCollection>
                    <GradientStop Color="#CCC" Offset="0.0"/>
                    <GradientStop Color="#444" Offset="1.0"/>
                </GradientStopCollection>
            </GradientBrush.GradientStops>
        </LinearGradientBrush>

        <LinearGradientBrush x:Key="DefaultedBorderBrush" StartPoint="0,0" EndPoint="0,1">
            <GradientBrush.GradientStops>
                <GradientStopCollection>
                    <GradientStop Color="#777" Offset="0.0"/>
                    <GradientStop Color="#000" Offset="1.0"/>
                </GradientStopCollection>
            </GradientBrush.GradientStops>
        </LinearGradientBrush>

        <LinearGradientBrush x:Key="PressedBorderBrush" StartPoint="0,0" EndPoint="0,1">
            <GradientBrush.GradientStops>
                <GradientStopCollection>
                    <GradientStop Color="#444" Offset="0.0"/>
                    <GradientStop Color="#888" Offset="1.0"/>
                </GradientStopCollection>
            </GradientBrush.GradientStops>
        </LinearGradientBrush>

        <SolidColorBrush x:Key="DisabledBorderBrush" Color="#AAA" />

        <SolidColorBrush x:Key="SolidBorderBrush" Color="#888" />

        <SolidColorBrush x:Key="LightBorderBrush" Color="#AAA" />

        <!-- Miscellaneous Brushes -->
        <SolidColorBrush x:Key="GlyphBrush" Color="#444" />

        <SolidColorBrush x:Key="LightColorBrush" Color="#DDD" />


        <Style x:Key="{x:Static MenuItem.SeparatorStyleKey}"
       TargetType="Separator">
            <Setter Property="Height" Value="1"/>
            <Setter Property="Margin" Value="0,4,0,4"/>
            <Setter Property="Template">
                <Setter.Value>
                    <ControlTemplate TargetType="Separator">
                        <Border BorderBrush="{StaticResource SolidBorderBrush}"
                BorderThickness="1"/>
                    </ControlTemplate>
                </Setter.Value>
            </Setter>
        </Style>

        <!-- TopLevelHeader -->
        <ControlTemplate x:Key="{x:Static MenuItem.TopLevelHeaderTemplateKey}"
                 TargetType="MenuItem">
            <Border Name="Border" >
                <Grid>
                    <ContentPresenter 
        Margin="6,3,6,3" 
        ContentSource="Header"
        RecognizesAccessKey="True" />
                    <Popup 
        Name="Popup"
        Placement="Bottom"
        IsOpen="{TemplateBinding IsSubmenuOpen}"
        AllowsTransparency="True" 
        Focusable="False"
        PopupAnimation="Fade">
                        <Border 
          Name="SubmenuBorder"
          SnapsToDevicePixels="True"
          Background="{StaticResource WindowBackgroundBrush}"
          BorderBrush="{StaticResource SolidBorderBrush}"
          BorderThickness="1" >
                            <StackPanel  
            IsItemsHost="True" 
            KeyboardNavigation.DirectionalNavigation="Cycle" />
                        </Border>
                    </Popup>
                </Grid>
            </Border>
            <ControlTemplate.Triggers>
                <Trigger Property="IsSuspendingPopupAnimation" Value="true">
                    <Setter TargetName="Popup" Property="PopupAnimation" Value="None"/>
                </Trigger>
                <Trigger Property="IsHighlighted" Value="true">
                    <Setter TargetName="Border" Property="Background"
              Value="{StaticResource NormalBrush}"/>
                    <Setter TargetName="Border" Property="BorderBrush"
              Value="Transparent"/>
                </Trigger>
                <Trigger SourceName="Popup" Property="Popup.AllowsTransparency" Value="True">
                    <Setter TargetName="SubmenuBorder" Property="CornerRadius" Value="0,0,4,4"/>
                    <Setter TargetName="SubmenuBorder" Property="Padding" Value="0,0,0,3"/>
                </Trigger>
                <Trigger Property="IsEnabled" Value="False">
                    <Setter Property="Foreground" Value="{StaticResource DisabledForegroundBrush}"/>
                </Trigger>
            </ControlTemplate.Triggers>
        </ControlTemplate>
        <!-- TopLevelItem -->

        <ControlTemplate x:Key="{x:Static MenuItem.TopLevelItemTemplateKey}" 
  TargetType="MenuItem">
            <Border Name="Border" >
                <Grid>
                    <ContentPresenter 
        Margin="6,3,6,3" 
        ContentSource="Header"
        RecognizesAccessKey="True" />
                </Grid>
            </Border>
            <ControlTemplate.Triggers>
                <Trigger Property="IsHighlighted" Value="true">
                    <Setter TargetName="Border" Property="Background" Value="Transparent"/>
                    <Setter TargetName="Border" Property="BorderBrush" Value="Transparent"/>
                </Trigger>
                <Trigger Property="IsEnabled" Value="False">
                    <Setter Property="Foreground"
              Value="{StaticResource DisabledForegroundBrush}"/>
                </Trigger>
            </ControlTemplate.Triggers>
        </ControlTemplate>

        <!-- SubmenuItem -->

        <ControlTemplate 
  x:Key="{x:Static MenuItem.SubmenuItemTemplateKey}" 
  TargetType="MenuItem">
            <Border Name="Border" >
                <Grid>
                    <Grid.ColumnDefinitions>
                        <ColumnDefinition Width="Auto" SharedSizeGroup="Icon"/>
                        <ColumnDefinition Width="*" />
                        <ColumnDefinition Width="Auto" SharedSizeGroup="Shortcut"/>
                        <ColumnDefinition Width="13"/>
                    </Grid.ColumnDefinitions>
                    <ContentPresenter 
        Name="Icon"
        Margin="6,0,6,0"
        VerticalAlignment="Center"
        ContentSource="Icon"/>
                    <Border 
        Name="Check"  
        Width="13" Height="13" 
        Visibility="Collapsed"
        Margin="6,0,6,0" 
        Background="{StaticResource NormalBrush}"
        BorderThickness="1"
        BorderBrush="{StaticResource NormalBorderBrush}">
                        <Path 
          Name="CheckMark"
          Width="7" Height="7" 
          Visibility="Hidden" 
          SnapsToDevicePixels="False" 
          Stroke="{StaticResource GlyphBrush}"
          StrokeThickness="2"
          Data="M 0 0 L 7 7 M 0 7 L 7 0" />
                    </Border>
                    <ContentPresenter 
        Name="HeaderHost"
        Grid.Column="1"
        ContentSource="Header"
        RecognizesAccessKey="True"/>
                    <TextBlock x:Name="InputGestureText"
        Grid.Column="2"
        Text="{TemplateBinding InputGestureText}"
        Margin="5,2,0,2"
        DockPanel.Dock="Right" />
                </Grid>
            </Border>
            <ControlTemplate.Triggers>
                <Trigger Property="Icon" Value="{x:Null}">
                    <Setter TargetName="Icon" Property="Visibility" Value="Hidden"/>
                </Trigger>
                <Trigger Property="IsChecked" Value="true">
                    <Setter TargetName="CheckMark" Property="Visibility" Value="Visible"/>
                </Trigger>
                <Trigger Property="IsCheckable" Value="true">
                    <Setter TargetName="Check" Property="Visibility" Value="Visible"/>
                    <Setter TargetName="Icon" Property="Visibility" Value="Hidden"/>
                </Trigger>
                <Trigger Property="IsHighlighted" Value="true">
                    <Setter TargetName="Border" Property="Background"
              Value="{StaticResource SelectedBackgroundBrush}"/>
                </Trigger>
                <Trigger Property="IsEnabled" Value="false">
                    <Setter Property="Foreground" Value="{StaticResource DisabledForegroundBrush}"/>
                </Trigger>
            </ControlTemplate.Triggers>
        </ControlTemplate>

        <!-- SubmenuHeader -->

        <ControlTemplate 
  x:Key="{x:Static MenuItem.SubmenuHeaderTemplateKey}" 
  TargetType="MenuItem">
            <Border Name="Border" >
                <Grid>
                    <Grid.ColumnDefinitions>
                        <ColumnDefinition Width="Auto" SharedSizeGroup="Icon"/>
                        <ColumnDefinition Width="*" />
                        <ColumnDefinition Width="Auto" SharedSizeGroup="Shortcut"/>
                        <ColumnDefinition Width="13"/>
                    </Grid.ColumnDefinitions>
                    <ContentPresenter 
        Name="Icon"
        Margin="6,0,6,0"
        VerticalAlignment="Center"
        ContentSource="Icon"/>
                    <ContentPresenter 
        Name="HeaderHost"
        Grid.Column="1"
        ContentSource="Header"
        RecognizesAccessKey="True"/>
                    <TextBlock x:Name="InputGestureText"
        Grid.Column="2"
        Text="{TemplateBinding InputGestureText}"
        Margin="5,2,2,2"
        DockPanel.Dock="Right"/>
                    <Path 
        Grid.Column="3"
        HorizontalAlignment="Center"
        VerticalAlignment="Center"
        Data="M 0 0 L 0 7 L 4 3.5 Z" 
        Fill="{StaticResource GlyphBrush}" />
                    <Popup 
        Name="Popup"
        Placement="Right"
        HorizontalOffset="-4" 
        IsOpen="{TemplateBinding IsSubmenuOpen}"
        AllowsTransparency="True" 
        Focusable="False"
        PopupAnimation="Fade">
                        <Border 
          Name="SubmenuBorder"
          SnapsToDevicePixels="True"
          Background="{StaticResource WindowBackgroundBrush}"
          BorderBrush="{StaticResource SolidBorderBrush}"
          BorderThickness="1" >
                            <StackPanel  
            IsItemsHost="True" 
            KeyboardNavigation.DirectionalNavigation="Cycle" />
                        </Border>
                    </Popup>
                </Grid>
            </Border>
            <ControlTemplate.Triggers>
                <Trigger Property="Icon" Value="{x:Null}">
                    <Setter TargetName="Icon" Property="Visibility" Value="Collapsed"/>
                </Trigger>
                <Trigger Property="IsHighlighted" Value="true">
                    <Setter TargetName="Border" Property="Background"
              Value="{StaticResource SelectedBackgroundBrush}"/>
                </Trigger>
                <Trigger SourceName="Popup" Property="Popup.AllowsTransparency" Value="True">
                    <Setter TargetName="SubmenuBorder" Property="CornerRadius" Value="4"/>
                    <Setter TargetName="SubmenuBorder" Property="Padding" Value="0,3,0,3"/>
                </Trigger>
                <Trigger Property="IsEnabled" Value="false">
                    <Setter Property="Foreground" Value="{StaticResource DisabledForegroundBrush}"/>
                </Trigger>
            </ControlTemplate.Triggers>
        </ControlTemplate>

        <!-- MenuItem Style -->

        <Style x:Key="{x:Type MenuItem}" TargetType="MenuItem">
            <Setter Property="OverridesDefaultStyle" Value="True"/>
            <Style.Triggers>
                <Trigger Property="Role" Value="TopLevelHeader">
                    <Setter Property="Template"
              Value="{StaticResource {x:Static MenuItem.TopLevelHeaderTemplateKey}}"/>
                    <Setter Property="Grid.IsSharedSizeScope" Value="true"/>
                </Trigger>
                <Trigger Property="Role" Value="TopLevelItem">
                    <Setter Property="Template"
              Value="{StaticResource {x:Static MenuItem.TopLevelItemTemplateKey}}"/>
                </Trigger>
                <Trigger Property="Role" Value="SubmenuHeader">
                    <Setter Property="Template"
              Value="{StaticResource {x:Static MenuItem.SubmenuHeaderTemplateKey}}"/>
                </Trigger>
                <Trigger Property="Role" Value="SubmenuItem">
                    <Setter Property="Template"
              Value="{StaticResource {x:Static MenuItem.SubmenuItemTemplateKey}}"/>
                </Trigger>
            </Style.Triggers>
        </Style>

如何在WPF C＃中更改默认按钮突出显示

1 个答案: