如何更改标记元素的背景（工具栏的一部分，在 xaml 中）？
<ToolBar Grid.Column="1" x:Name="AdditionalModuleButtonsStackPanel" Background="{x:Null}"/>
我什至不知道该元素是如何被调用的。我需要使背景透明。
user2160375
问问题
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1 回答
2
根据这个答案，
不幸的是，溢出按钮具有固定的背景。
这意味着您必须提供整个模板。这是工具栏的样式（我知道很久了...），请确保将其包含在您的 XAML 中（我将其添加到我的Window.Resources）中：
资源：
<Window.Resources>
<LinearGradientBrush x:Key="ToolBarHorizontalBackground" EndPoint="0,1" StartPoint="0,0">
<GradientStop Color="#E2E0DB" Offset="0"/>
<GradientStop Color="#EAE8E4" Offset="0.5"/>
<GradientStop Color="#D5D2CA" Offset="0.9"/>
<GradientStop Color="#DBD8D1" Offset="1"/>
</LinearGradientBrush>
<LinearGradientBrush x:Key="ToolBarToggleButtonVerticalBackground" EndPoint="1,0" StartPoint="0,0">
<GradientStop Color="#E6E6E6" Offset="0"/>
<GradientStop Color="#D2D2D2" Offset="0.5"/>
<GradientStop Color="#808080" Offset="1"/>
</LinearGradientBrush>
<SolidColorBrush x:Key="ToolBarButtonHover" Color="#B6BDD2"/>
<SolidColorBrush x:Key="ToolBarGripper" Color="#A0A0A0"/>
<Style x:Key="ToolBarVerticalOverflowButtonStyle" TargetType="{x:Type ToggleButton}">
<Setter Property="Background" Value="{StaticResource ToolBarToggleButtonVerticalBackground}"/>
<Setter Property="MinHeight" Value="0"/>
<Setter Property="MinWidth" Value="0"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type ToggleButton}">
<Border x:Name="Bd" Background="{TemplateBinding Background}" CornerRadius="0,0,3,3" SnapsToDevicePixels="true">
<Canvas HorizontalAlignment="Right" Height="6" Margin="2,7,2,2" SnapsToDevicePixels="true" VerticalAlignment="Bottom" Width="7">
<Path Data="M 1.5 1 L 1.5 6" Stroke="White"/>
<Path Data="M 0.5 0 L 0.5 5" Stroke="{TemplateBinding Foreground}"/>
<Path Data="M 3.5 0.5 L 7 3.5 L 4 6.5 Z" Fill="White"/>
<Path Data="M 3 -0.5 L 6 2.5 L 3 5.5 Z" Fill="{TemplateBinding Foreground}"/>
</Canvas>
</Border>
<ControlTemplate.Triggers>
<Trigger Property="IsMouseOver" Value="true">
<Setter Property="Background" TargetName="Bd" Value="{StaticResource ToolBarButtonHover}"/>
</Trigger>
<Trigger Property="IsKeyboardFocused" Value="true">
<Setter Property="Background" TargetName="Bd" Value="{StaticResource ToolBarButtonHover}"/>
</Trigger>
<Trigger Property="IsEnabled" Value="false">
<Setter Property="Foreground" Value="{StaticResource ToolBarGripper}"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
<Style.Triggers>
<DataTrigger Binding="{Binding Source={x:Static SystemParameters.HighContrast}}" Value="true">
<Setter Property="Background" Value="{DynamicResource {x:Static SystemColors.ControlBrushKey}}"/>
</DataTrigger>
</Style.Triggers>
</Style>
<LinearGradientBrush x:Key="ToolBarVerticalBackground" EndPoint="1,0" StartPoint="0,0">
<GradientStop Color="#E2E0DB" Offset="0"/>
<GradientStop Color="#EAE8E4" Offset="0.5"/>
<GradientStop Color="#D5D2CA" Offset="0.9"/>
<GradientStop Color="#DBD8D1" Offset="1"/>
</LinearGradientBrush>
<LinearGradientBrush x:Key="ToolBarToggleButtonHorizontalBackground" EndPoint="0,1" StartPoint="0,0">
<GradientStop Color="#E6E6E6" Offset="0"/>
<GradientStop Color="#D2D2D2" Offset="0.5"/>
<GradientStop Color="#808080" Offset="1"/>
</LinearGradientBrush>
<Style x:Key="ToolBarHorizontalOverflowButtonStyle" TargetType="{x:Type ToggleButton}">
<Setter Property="Background" Value="{StaticResource ToolBarToggleButtonHorizontalBackground}"/>
<Setter Property="MinHeight" Value="0"/>
<Setter Property="MinWidth" Value="0"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type ToggleButton}">
<Border x:Name="Bd" Background="{TemplateBinding Background}" CornerRadius="0,3,3,0" SnapsToDevicePixels="true">
<Canvas HorizontalAlignment="Right" Height="7" Margin="7,2,2,2" SnapsToDevicePixels="true" VerticalAlignment="Bottom" Width="6">
<Path Data="M 1 1.5 L 6 1.5" Stroke="White"/>
<Path Data="M 0 0.5 L 5 0.5" Stroke="{TemplateBinding Foreground}"/>
<Path Data="M 0.5 4 L 6.5 4 L 3.5 7 Z" Fill="White"/>
<Path Data="M -0.5 3 L 5.5 3 L 2.5 6 Z" Fill="{TemplateBinding Foreground}"/>
</Canvas>
</Border>
<ControlTemplate.Triggers>
<Trigger Property="IsMouseOver" Value="true">
<Setter Property="Background" TargetName="Bd" Value="{StaticResource ToolBarButtonHover}"/>
</Trigger>
<Trigger Property="IsKeyboardFocused" Value="true">
<Setter Property="Background" TargetName="Bd" Value="{StaticResource ToolBarButtonHover}"/>
</Trigger>
<Trigger Property="IsEnabled" Value="false">
<Setter Property="Foreground" Value="{StaticResource ToolBarGripper}"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
<Style.Triggers>
<DataTrigger Binding="{Binding Source={x:Static SystemParameters.HighContrast}}" Value="true">
<Setter Property="Background" Value="{DynamicResource {x:Static SystemColors.ControlBrushKey}}"/>
</DataTrigger>
</Style.Triggers>
</Style>
<SolidColorBrush x:Key="ToolBarMenuBorder" Color="#666666"/>
<SolidColorBrush x:Key="ToolBarSubMenuBackground" Color="#F9F8F7"/>
<Style x:Key="ToolBarThumbStyle" TargetType="{x:Type Thumb}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type Thumb}">
<Border Background="Transparent" Padding="{TemplateBinding Padding}" SnapsToDevicePixels="True">
<Rectangle>
<Rectangle.Fill>
<DrawingBrush TileMode="Tile" Viewbox="0,0,4,4" Viewport="0,0,4,4" ViewportUnits="Absolute" ViewboxUnits="Absolute">
<DrawingBrush.Drawing>
<DrawingGroup>
<GeometryDrawing Brush="White" Geometry="M 1 1 L 1 3 L 3 3 L 3 1 z"/>
<GeometryDrawing Brush="{StaticResource ToolBarGripper}" Geometry="M 0 0 L 0 2 L 2 2 L 2 0 z"/>
</DrawingGroup>
</DrawingBrush.Drawing>
</DrawingBrush>
</Rectangle.Fill>
</Rectangle>
</Border>
<ControlTemplate.Triggers>
<Trigger Property="IsMouseOver" Value="true">
<Setter Property="Cursor" Value="SizeAll"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<Style x:Key="ToolBarMainPanelBorderStyle" TargetType="{x:Type Border}">
<Setter Property="Margin" Value="0,0,11,0"/>
<Setter Property="CornerRadius" Value="3,3,3,3"/>
<Style.Triggers>
<DataTrigger Binding="{Binding Source={x:Static SystemParameters.HighContrast}}" Value="true">
<Setter Property="CornerRadius" Value="0,0,0,0"/>
</DataTrigger>
</Style.Triggers>
</Style>
<Style x:Key="ToolBarStyle1" TargetType="{x:Type ToolBar}">
<Setter Property="Background" Value="{StaticResource ToolBarHorizontalBackground}"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type ToolBar}">
<Grid x:Name="Grid" Margin="3,1,1,1" SnapsToDevicePixels="true">
<Grid x:Name="OverflowGrid" HorizontalAlignment="Right">
<ToggleButton x:Name="OverflowButton" Background="Transparent" ClickMode="Press" FocusVisualStyle="{x:Null}" IsChecked="{Binding IsOverflowOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" IsEnabled="{TemplateBinding HasOverflowItems}" Style="{StaticResource ToolBarHorizontalOverflowButtonStyle}"/>
<Popup x:Name="OverflowPopup" AllowsTransparency="true" Focusable="false" IsOpen="{Binding IsOverflowOpen, RelativeSource={RelativeSource TemplatedParent}}" PopupAnimation="{DynamicResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom" StaysOpen="false">
<Themes:SystemDropShadowChrome x:Name="Shdw" Color="Transparent">
<Border x:Name="ToolBarSubMenuBorder" BorderBrush="{StaticResource ToolBarMenuBorder}" BorderThickness="1" Background="{StaticResource ToolBarSubMenuBackground}" RenderOptions.ClearTypeHint="Enabled">
<ToolBarOverflowPanel x:Name="PART_ToolBarOverflowPanel" KeyboardNavigation.DirectionalNavigation="Cycle" FocusVisualStyle="{x:Null}" Focusable="true" Margin="2" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" KeyboardNavigation.TabNavigation="Cycle" WrapWidth="200"/>
</Border>
</Themes:SystemDropShadowChrome>
</Popup>
</Grid>
<Border x:Name="MainPanelBorder" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" Padding="{TemplateBinding Padding}" Style="{StaticResource ToolBarMainPanelBorderStyle}">
<DockPanel KeyboardNavigation.TabIndex="1" KeyboardNavigation.TabNavigation="Local">
<Thumb x:Name="ToolBarThumb" Margin="-3,-1,0,0" Padding="6,5,1,6" Style="{StaticResource ToolBarThumbStyle}" Width="10"/>
<ContentPresenter x:Name="ToolBarHeader" ContentSource="Header" HorizontalAlignment="Center" Margin="4,0,4,0" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" VerticalAlignment="Center"/>
<ToolBarPanel x:Name="PART_ToolBarPanel" IsItemsHost="true" Margin="0,1,2,2" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
</DockPanel>
</Border>
</Grid>
<ControlTemplate.Triggers>
<Trigger Property="IsOverflowOpen" Value="true">
<Setter Property="IsEnabled" TargetName="ToolBarThumb" Value="false"/>
</Trigger>
<Trigger Property="Header" Value="{x:Null}">
<Setter Property="Visibility" TargetName="ToolBarHeader" Value="Collapsed"/>
</Trigger>
<Trigger Property="ToolBarTray.IsLocked" Value="true">
<Setter Property="Visibility" TargetName="ToolBarThumb" Value="Collapsed"/>
</Trigger>
<Trigger Property="HasDropShadow" SourceName="OverflowPopup" Value="true">
<Setter Property="Margin" TargetName="Shdw" Value="0,0,5,5"/>
<Setter Property="SnapsToDevicePixels" TargetName="Shdw" Value="true"/>
<Setter Property="Color" TargetName="Shdw" Value="#71000000"/>
</Trigger>
<Trigger Property="Orientation" Value="Vertical">
<Setter Property="Margin" TargetName="Grid" Value="1,3,1,1"/>
<Setter Property="Style" TargetName="OverflowButton" Value="{StaticResource ToolBarVerticalOverflowButtonStyle}"/>
<Setter Property="Height" TargetName="ToolBarThumb" Value="10"/>
<Setter Property="Width" TargetName="ToolBarThumb" Value="Auto"/>
<Setter Property="Margin" TargetName="ToolBarThumb" Value="-1,-3,0,0"/>
<Setter Property="Padding" TargetName="ToolBarThumb" Value="5,6,6,1"/>
<Setter Property="Margin" TargetName="ToolBarHeader" Value="0,0,0,4"/>
<Setter Property="Margin" TargetName="PART_ToolBarPanel" Value="1,0,2,2"/>
<Setter Property="DockPanel.Dock" TargetName="ToolBarThumb" Value="Top"/>
<Setter Property="DockPanel.Dock" TargetName="ToolBarHeader" Value="Top"/>
<Setter Property="HorizontalAlignment" TargetName="OverflowGrid" Value="Stretch"/>
<Setter Property="VerticalAlignment" TargetName="OverflowGrid" Value="Bottom"/>
<Setter Property="Placement" TargetName="OverflowPopup" Value="Right"/>
<Setter Property="Margin" TargetName="MainPanelBorder" Value="0,0,0,11"/>
<Setter Property="Background" Value="{StaticResource ToolBarVerticalBackground}"/>
</Trigger>
<Trigger Property="IsEnabled" Value="false">
<Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.GrayTextBrushKey}}"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
<Style.Triggers>
<DataTrigger Binding="{Binding Source={x:Static SystemParameters.HighContrast}}" Value="true">
<Setter Property="Background" Value="{DynamicResource {x:Static SystemColors.ControlBrushKey}}"/>
</DataTrigger>
</Style.Triggers>
</Style>
</Window.Resources>
然后通过执行以下操作添加样式：
<Grid>
<ToolBar x:Name="AdditionalModuleButtonsStackPanel" Background="{x:Null}" Style="{DynamicResource ToolBarStyle1}" />
</Grid>
于 2013-04-05T16:41:21.037 回答