Question

我想设置WPF复选框的不确定状态。我们有一个带有复选框的树视图控件，我们希望不确定状态表示检查了一些后代，并且有些未被检查。

我到处看到的解决方案是覆盖复选框的默认控件模板并执行我需要做的事情。

我有两个问题：

我找不到控件模板对于正常的Aero复选框。这个一： http://msdn.microsoft.com/en-us/library/ms752319.aspx 看起来很高兴。
我从Expression Blend获得的控件模板中包含了BulletChrome元素，我无法弄清楚该怎么做。

那么有谁知道在哪里可以获得一个看起来“正常”的复选框控制模板，或者是否有更简单的方法来自行设置不确定状态？

我确信有一种简单的方法我只是忽略......对吗？

Answer 1

试试这个（从publicgk链接到的文章修改）

<Window x:Class="WpfApplication1.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
        xmlns:theme="clr-namespace:Microsoft.Windows.Themes;assembly=PresentationFramework.Aero" Title="MainWindow" Height="350" Width="525">
  <Window.Resources>
    <Style x:Key="CheckRadioFocusVisual">
      <Setter Property="Control.Template">
        <Setter.Value>
          <ControlTemplate>
            <Rectangle Margin="14,0,0,0"
                       StrokeThickness="1"
                       Stroke="Black"
                       StrokeDashArray="1 2"
                       SnapsToDevicePixels="true"/>
          </ControlTemplate>
        </Setter.Value>
      </Setter>
    </Style>

    <Style x:Key="EmptyCheckBoxFocusVisual">
      <Setter Property="Control.Template">
        <Setter.Value>
          <ControlTemplate>
            <Rectangle Margin="1"
                       StrokeThickness="1"
                       Stroke="Black"
                       StrokeDashArray="1 2"
                       SnapsToDevicePixels="true"/>
          </ControlTemplate>
        </Setter.Value>
      </Setter>
    </Style>

    <SolidColorBrush x:Key="CheckBoxFillNormal"
                     Color="#F4F4F4"/>
    <SolidColorBrush x:Key="CheckBoxStroke"
                     Color="#8E8F8F"/>
    <Style x:Key="{x:Type CheckBox}"
         TargetType="{x:Type CheckBox}">
      <Setter Property="Foreground"
            Value="{DynamicResource {x:Static SystemColors.ControlTextBrushKey}}"/>
      <Setter Property="Background"
            Value="{StaticResource CheckBoxFillNormal}"/>
      <Setter Property="BorderBrush"
            Value="{StaticResource CheckBoxStroke}"/>
      <Setter Property="BorderThickness"
            Value="1"/>
      <Setter Property="FocusVisualStyle"
            Value="{StaticResource EmptyCheckBoxFocusVisual}"/>
      <Setter Property="Template">
        <Setter.Value>
          <ControlTemplate TargetType="{x:Type CheckBox}">
            <BulletDecorator Background="Transparent" 
                             SnapsToDevicePixels="true">
              <BulletDecorator.Bullet>
                <theme:BulletChrome Background="{TemplateBinding Background}"
                                    BorderBrush="{TemplateBinding BorderBrush}"
                                    RenderMouseOver="{TemplateBinding IsMouseOver}"
                                    RenderPressed="{TemplateBinding IsPressed}"
                                    IsChecked="{TemplateBinding IsChecked}"/>
              </BulletDecorator.Bullet>
              <ContentPresenter Margin="{TemplateBinding Padding}"
                                VerticalAlignment="{TemplateBinding VerticalContentAlignment}"
                                HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}"
                                RecognizesAccessKey="True"
                                SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
            </BulletDecorator>
            <ControlTemplate.Triggers>
              <Trigger Property="IsChecked" 
                       Value="{x:Null}">
                <!-- TODO: Do Stuff Here -->
              </Trigger>
              <Trigger Property="HasContent"
                       Value="true">
                <Setter Property="FocusVisualStyle"
                        Value="{StaticResource CheckRadioFocusVisual}"/>
                <Setter Property="Padding"
                        Value="4,0,0,0"/>
              </Trigger>
              <Trigger Property="IsEnabled"
                       Value="false">
                <Setter Property="Foreground"
                        Value="{DynamicResource {x:Static SystemColors.GrayTextBrushKey}}"/>
              </Trigger>
            </ControlTemplate.Triggers>
          </ControlTemplate>
        </Setter.Value>
      </Setter>
    </Style>
  </Window.Resources>
  <StackPanel>
    <CheckBox IsChecked="True" Content="Checked"/>
    <CheckBox IsChecked="{x:Null}" Content="Unknown"/>
    <CheckBox IsChecked="False" Content="Not Checked"/>
  </StackPanel>
</Window>

Answer 2

您是否已尝试下载Aero Theme xaml并进行了调查？
Where can I download Microsoft's standard WPF themes from?

Answer 3

您可以使用位于以下位置的经典主题中的CheckBox样式：

C:\Program Files (x86)\Microsoft Expression\Blend 4\SystemThemes\Wpf\classic.xaml

此实现的Path代表名为CheckMarkPath的复选框标记。我只是用填充的Path替换了这个Rectangle来获得这些结果：

Checkboxes

Answer 4

叫我疯了，但我实际上在纯XAML中重新实现了标准的Aero复选框。如果您想自定义Aero复选框，那么这是一个很好的起点。您可以在my repository on GitHub（specific commit中找到其他样式，以防文件被移动）。

BulletCommon.xaml （CheckBox和RadioButton的常用资源）

<ResourceDictionary
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:xx="clr-namespace:Alba.WpfThemeGenerator.Markup">

    <!-- Colors -->

    <!-- Background overlay -->
    <SolidColorBrush x:Key="Bullet.BackgroundOverlay.Hover" Color="#DEF9FA"/>
    <SolidColorBrush x:Key="Bullet.BackgroundOverlay.Pressed" Color="#C2E4F6"/>
    <SolidColorBrush x:Key="Bullet.BackgroundOverlay.Disabled" Color="#F4F4F4"/>
    <!-- Border overlay -->
    <SolidColorBrush x:Key="Bullet.BorderOverlay.Hover" Color="#3C7FB1"/>
    <SolidColorBrush x:Key="Bullet.BorderOverlay.Pressed" Color="#2C628B"/>
    <SolidColorBrush x:Key="Bullet.BorderOverlay.Disabled" Color="#ADB2B5"/>
    <!-- Inner border -->
    <LinearGradientBrush x:Key="Bullet.InnerBorder.Disabled" StartPoint="0,0" EndPoint="1,1">
        <GradientStop Color="#E1E3E5" Offset="0.25"/>
        <GradientStop Color="#E8E9EA" Offset="0.5"/>
        <GradientStop Color="#F3F3F3" Offset="1"/>
    </LinearGradientBrush>
    <!-- Indeterminate inner border -->
    <LinearGradientBrush x:Key="Bullet.InnerBorder.IndeterminateDisabled" StartPoint="0,0" EndPoint="1,1">
        <GradientStop Color="#BFD0DD" Offset="0"/>
        <GradientStop Color="#BDCBD7" Offset="0.5"/>
        <GradientStop Color="#BAC4CC" Offset="1"/>
    </LinearGradientBrush>
    <!-- Inner fill -->
    <LinearGradientBrush x:Key="Bullet.InnerFill.Normal" StartPoint="0,0" EndPoint="1,1">
        <GradientStop Color="#CBCFD5" Offset="0.2"/>
        <GradientStop Color="#F7F7F7" Offset="0.8"/>
    </LinearGradientBrush>
    <LinearGradientBrush x:Key="Bullet.InnerFill.Hover" StartPoint="0,0" EndPoint="1,1">
        <GradientStop Color="#B1DFFD" Offset="0.2"/>
        <GradientStop Color="#E9F7FE" Offset="0.8"/>
    </LinearGradientBrush>
    <LinearGradientBrush x:Key="Bullet.InnerFill.Pressed" StartPoint="0,0" EndPoint="1,1">
        <GradientStop Color="#7FBADC" Offset="0.2"/>
        <GradientStop Color="#D6EDF9" Offset="0.8"/>
    </LinearGradientBrush>
    <!-- Indeterminate fill -->
    <LinearGradientBrush x:Key="Bullet.Fill.Indeterminate" StartPoint="0,0" EndPoint="1,1">
        <GradientStop Color="#2FA8D5" Offset="0.2"/>
        <GradientStop Color="#25598C" Offset="0.8"/>
    </LinearGradientBrush>
    <LinearGradientBrush x:Key="Bullet.Fill.IndeterminateHover" StartPoint="0,0" EndPoint="1,1">
        <GradientStop Color="#33D7ED" Offset="0.2"/>
        <GradientStop Color="#2094CE" Offset="0.8"/>
    </LinearGradientBrush>
    <LinearGradientBrush x:Key="Bullet.Fill.IndeterminatePressed" StartPoint="0,0" EndPoint="1,1">
        <GradientStop Color="#17447A" Offset="0.2"/>
        <GradientStop Color="#218BC3" Offset="0.8"/>
    </LinearGradientBrush>
    <LinearGradientBrush x:Key="Bullet.Fill.IndeterminateDisabled" StartPoint="0,0" EndPoint="1,1">
        <GradientStop Color="#C0E5F3" Offset="0.2"/>
        <GradientStop Color="#BDCDDC" Offset="0.8"/>
    </LinearGradientBrush>

    <!-- Styles -->

    <Style x:Key="Bullet.FocusVisual.Normal">
        <Setter Property="Control.Template">
            <Setter.Value>
                <ControlTemplate>
                    <Rectangle Margin="14,0,0,0" SnapsToDevicePixels="True"
                            StrokeThickness="1" Stroke="{xx:SystemBrush ControlText}" StrokeDashArray="1 2"/>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>

    <Style x:Key="Bullet.FocusVisual.Empty">
        <Setter Property="Control.Template">
            <Setter.Value>
                <ControlTemplate>
                    <Rectangle Margin="1" SnapsToDevicePixels="True"
                            StrokeThickness="1" Stroke="{xx:SystemBrush ControlText}" StrokeDashArray="1 2"/>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>

</ResourceDictionary>

CheckBox.xaml （CheckBox的资源）

<ResourceDictionary
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:xx="clr-namespace:Alba.WpfThemeGenerator.Markup">

    <ResourceDictionary.MergedDictionaries>
        <ResourceDictionary Source="BulletCommon.xaml"/>
    </ResourceDictionary.MergedDictionaries>

    <!-- Colors -->

    <SolidColorBrush x:Key="CheckBox.Stroke" Color="#8E8F8F"/>
    <SolidColorBrush x:Key="CheckBox.Fill" Color="#F4F4F4"/>
    <!-- Check mark -->
    <SolidColorBrush x:Key="CheckBox.Glyph.Stroke.Normal" Color="#FFFFFF"/>
    <SolidColorBrush x:Key="CheckBox.Glyph.Stroke.Pressed" Color="#B2FFFFFF"/>
    <SolidColorBrush x:Key="CheckBox.Glyph.Fill.Normal" Color="#31347C"/>
    <SolidColorBrush x:Key="CheckBox.Glyph.Fill.Pressed" Color="#B231347C"/>
    <SolidColorBrush x:Key="CheckBox.Glyph.Fill.Disabled" Color="#AEB7CF"/>
    <!-- Inner border -->
    <LinearGradientBrush x:Key="CheckBox.InnerBorder" StartPoint="0,0" EndPoint="1,1">
        <GradientStop Color="#AEB3B9" Offset="0.25"/>
        <GradientStop Color="#C2C4C6" Offset="0.5"/>
        <GradientStop Color="#EAEBEB" Offset="1"/>
    </LinearGradientBrush>
    <LinearGradientBrush x:Key="CheckBox.InnerBorder.Hover" StartPoint="0,0" EndPoint="1,1">
        <GradientStop Color="#79C6F9" Offset="0.3"/>
        <GradientStop Color="#79C6F9" Offset="0.5"/>
        <GradientStop Color="#D2EDFD" Offset="1"/>
    </LinearGradientBrush>
    <LinearGradientBrush x:Key="CheckBox.InnerBorder.Pressed" StartPoint="0,0" EndPoint="1,1">
        <GradientStop Color="#54A6D5" Offset="0.3"/>
        <GradientStop Color="#5EB5E4" Offset="0.5"/>
        <GradientStop Color="#C4E5F6" Offset="1"/>
    </LinearGradientBrush>
    <!-- Indeterminate inner border -->
    <LinearGradientBrush x:Key="CheckBox.InnerBorder.Indeterminate" StartPoint="0,0" EndPoint="1,1">
        <GradientStop Color="#2A628D" Offset="0"/>
        <GradientStop Color="#245479" Offset="0.5"/>
        <GradientStop Color="#193B55" Offset="1"/>
    </LinearGradientBrush>
    <LinearGradientBrush x:Key="CheckBox.InnerBorder.IndeterminateHover" StartPoint="0,0" EndPoint="1,1">
        <GradientStop Color="#29628D" Offset="0"/>
        <GradientStop Color="#245479" Offset="0.5"/>
        <GradientStop Color="#193B55" Offset="1"/>
    </LinearGradientBrush>
    <LinearGradientBrush x:Key="CheckBox.InnerBorder.IndeterminatePressed" StartPoint="0,0" EndPoint="1,1">
        <GradientStop Color="#193B55" Offset="0"/>
        <GradientStop Color="#245479" Offset="0.5"/>
        <GradientStop Color="#29628D" Offset="1"/>
    </LinearGradientBrush>
    <!-- Indeterminate highlight -->
    <LinearGradientBrush x:Key="CheckBox.Highlight.Indeterminate" StartPoint="0,0" EndPoint="1,1">
        <GradientStop Color="#80FFFFFF" Offset="0"/>
        <GradientStop Color="#00FFFFFF" Offset="0.5"/>
        <GradientStop Color="#003333A0" Offset="0.5"/>
        <GradientStop Color="#003333A0" Offset="1"/>
    </LinearGradientBrush>
    <LinearGradientBrush x:Key="CheckBox.Highlight.IndeterminateHover" StartPoint="0,0" EndPoint="1,1">
        <GradientStop Color="#80FFFFFF" Offset="0"/>
        <GradientStop Color="#00FFFFFF" Offset="0.5"/>
        <GradientStop Color="#003333A0" Offset="0.5"/>
        <GradientStop Color="#803333A0" Offset="1"/>
    </LinearGradientBrush>
    <LinearGradientBrush x:Key="CheckBox.Highlight.IndeterminatePressed" StartPoint="0,0" EndPoint="1,1">
        <GradientStop Color="#00FFFFFF" Offset="0.5"/>
        <GradientStop Color="#20FFFFFF" Offset="1"/>
    </LinearGradientBrush>

    <!-- Images -->

    <PathGeometry x:Key="CheckBox.Glyph.Geometry">
        <PathFigure StartPoint="9.0, 1.833" IsClosed="True">
            <LineSegment Point="10.667, 3.167"/>
            <LineSegment Point="7, 10.667"/>
            <LineSegment Point="5.333, 10.667"/>
            <LineSegment Point="3.333, 8.167"/>
            <LineSegment Point="3.333, 6.833"/>
            <LineSegment Point="4.833, 6.5"/>
            <LineSegment Point="6, 8"/>
        </PathFigure>
    </PathGeometry>

    <!-- Styles -->

    <Style x:Key="{x:Type CheckBox}" TargetType="{x:Type CheckBox}">
        <Setter Property="FocusVisualStyle" Value="{StaticResource Bullet.FocusVisual.Empty}"/>
        <Setter Property="Foreground" Value="{xx:SystemBrush ControlText}"/>
        <Setter Property="Background" Value="{StaticResource CheckBox.Fill}"/>
        <Setter Property="BorderBrush" Value="{StaticResource CheckBox.Stroke}"/>
        <Setter Property="BorderThickness" Value="1"/>
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="{x:Type CheckBox}">
                    <BulletDecorator Background="Transparent" SnapsToDevicePixels="True">
                        <BulletDecorator.Bullet>
                            <Grid Width="13" Height="13">
                                <Rectangle x:Name="Background" Margin="0" Fill="{TemplateBinding Background}"/>
                                <Rectangle x:Name="BackgroundOverlay" Margin="0"/>
                                <Rectangle x:Name="InnerFill" Margin="3" Fill="{StaticResource Bullet.InnerFill.Normal}"/>
                                <Rectangle x:Name="InnerBorder" Margin="2" Stroke="{StaticResource CheckBox.InnerBorder}"/>
                                <Rectangle x:Name="Highlight" Margin="3"/>
                                <Path x:Name="GlyphStroke" Margin="0" StrokeThickness="1.5" Data="{StaticResource CheckBox.Glyph.Geometry}"/>
                                <Path x:Name="GlyphFill" Margin="0" Data="{StaticResource CheckBox.Glyph.Geometry}"/>
                                <Rectangle x:Name="Border" Margin="0" Stroke="{TemplateBinding BorderBrush}"/>
                                <Rectangle x:Name="BorderOverlay" Margin="0"/>
                            </Grid>
                        </BulletDecorator.Bullet>
                        <ContentPresenter SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" Margin="{TemplateBinding Padding}"
                                VerticalAlignment="{TemplateBinding VerticalContentAlignment}" HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}"
                                RecognizesAccessKey="True"/>
                    </BulletDecorator>
                    <ControlTemplate.Triggers>

                        <Trigger Property="HasContent" Value="True">
                            <!-- if (HasContent) -->
                            <Setter Property="FocusVisualStyle" Value="{StaticResource Bullet.FocusVisual.Normal}"/>
                            <Setter Property="Padding" Value="4,0,0,0"/>
                        </Trigger>

                        <Trigger Property="IsMouseOver" Value="True">
                            <!-- if (IsMouseOver) -->
                            <Setter TargetName="BackgroundOverlay" Property="Fill" Value="{StaticResource Bullet.BackgroundOverlay.Hover}"/>
                            <Setter TargetName="InnerFill" Property="Fill" Value="{StaticResource Bullet.InnerFill.Hover}"/>
                            <Setter TargetName="BorderOverlay" Property="Stroke" Value="{StaticResource Bullet.BorderOverlay.Hover}"/>
                            <Setter TargetName="InnerBorder" Property="Stroke" Value="{StaticResource CheckBox.InnerBorder.Hover}"/>
                        </Trigger>
                        <Trigger Property="IsChecked" Value="{x:Null}">
                            <!-- if (IsChecked == null) -->
                            <Setter TargetName="Highlight" Property="Stroke" Value="{StaticResource CheckBox.Highlight.Indeterminate}"/>
                            <Setter TargetName="InnerFill" Property="Fill" Value="{StaticResource Bullet.Fill.Indeterminate}"/>
                            <Setter TargetName="InnerBorder" Property="Stroke" Value="{StaticResource CheckBox.InnerBorder.Indeterminate}"/>
                        </Trigger>
                        <Trigger Property="IsPressed" Value="True">
                            <!-- if (IsPressed) -->
                            <Setter TargetName="BackgroundOverlay" Property="Fill" Value="{StaticResource Bullet.BackgroundOverlay.Pressed}"/>
                            <Setter TargetName="InnerFill" Property="Fill" Value="{StaticResource Bullet.InnerFill.Pressed}"/>
                            <Setter TargetName="BorderOverlay" Property="Stroke" Value="{StaticResource Bullet.BorderOverlay.Pressed}"/>
                            <Setter TargetName="InnerBorder" Property="Stroke" Value="{StaticResource CheckBox.InnerBorder.Pressed}"/>
                        </Trigger>
                        <MultiTrigger>
                            <!-- if (IsChecked == null && IsMouseOver) -->
                            <MultiTrigger.Conditions>
                                <Condition Property="IsChecked" Value="{x:Null}"/>
                                <Condition Property="IsMouseOver" Value="True"/>
                            </MultiTrigger.Conditions>
                            <Setter TargetName="Highlight" Property="Stroke" Value="{StaticResource CheckBox.Highlight.IndeterminateHover}"/>
                            <Setter TargetName="InnerFill" Property="Fill" Value="{StaticResource Bullet.Fill.IndeterminateHover}"/>
                            <Setter TargetName="InnerBorder" Property="Stroke" Value="{StaticResource CheckBox.InnerBorder.IndeterminateHover}"/>
                        </MultiTrigger>

                        <MultiTrigger>
                            <!-- if (IsChecked == null && IsPressed) -->
                            <MultiTrigger.Conditions>
                                <Condition Property="IsChecked" Value="{x:Null}"/>
                                <Condition Property="IsPressed" Value="True"/>
                            </MultiTrigger.Conditions>
                            <Setter TargetName="Highlight" Property="Stroke" Value="{StaticResource CheckBox.Highlight.IndeterminatePressed}"/>
                            <Setter TargetName="InnerFill" Property="Fill" Value="{StaticResource Bullet.Fill.IndeterminatePressed}"/>
                            <Setter TargetName="InnerBorder" Property="Stroke" Value="{StaticResource CheckBox.InnerBorder.IndeterminatePressed}"/>
                        </MultiTrigger>
                        <MultiTrigger>
                            <!-- if (IsChecked == true && IsPressed) -->
                            <MultiTrigger.Conditions>
                                <Condition Property="IsChecked" Value="True"/>
                                <Condition Property="IsPressed" Value="True"/>
                            </MultiTrigger.Conditions>
                            <Setter TargetName="GlyphStroke" Property="Stroke" Value="{StaticResource CheckBox.Glyph.Stroke.Pressed}"/>
                            <Setter TargetName="GlyphFill" Property="Fill" Value="{StaticResource CheckBox.Glyph.Fill.Pressed}"/>
                        </MultiTrigger>
                        <MultiTrigger>
                            <!-- if (IsChecked == true && !IsPressed) -->
                            <MultiTrigger.Conditions>
                                <Condition Property="IsChecked" Value="True"/>
                                <Condition Property="IsPressed" Value="False"/>
                            </MultiTrigger.Conditions>
                            <Setter TargetName="GlyphStroke" Property="Stroke" Value="{StaticResource CheckBox.Glyph.Stroke.Normal}"/>
                            <Setter TargetName="GlyphFill" Property="Fill" Value="{StaticResource CheckBox.Glyph.Fill.Normal}"/>
                        </MultiTrigger>

                        <Trigger Property="IsEnabled" Value="False">
                            <!-- if (!IsEnabled) -->
                            <Setter Property="Foreground" Value="{xx:SystemBrush GrayText}"/>
                            <Setter TargetName="InnerFill" Property="Fill" Value="{x:Null}"/>
                            <Setter TargetName="GlyphStroke" Property="Stroke" Value="{x:Null}"/>
                            <Setter TargetName="BorderOverlay" Property="Stroke" Value="{StaticResource Bullet.BorderOverlay.Disabled}"/>
                            <Setter TargetName="InnerBorder" Property="Stroke" Value="{StaticResource Bullet.InnerBorder.Disabled}"/>
                        </Trigger>
                        <MultiTrigger>
                            <!-- if (IsChecked == null && !IsEnabled) -->
                            <MultiTrigger.Conditions>
                                <Condition Property="IsChecked" Value="{x:Null}"/>
                                <Condition Property="IsEnabled" Value="False"/>
                            </MultiTrigger.Conditions>
                            <Setter TargetName="InnerFill" Property="Fill" Value="{StaticResource Bullet.Fill.IndeterminateDisabled}"/>
                            <Setter TargetName="InnerBorder" Property="Stroke" Value="{StaticResource Bullet.InnerBorder.IndeterminateDisabled}"/>
                        </MultiTrigger>
                        <MultiTrigger>
                            <!-- if (IsChecked == true && !IsEnabled) -->
                            <MultiTrigger.Conditions>
                                <Condition Property="IsChecked" Value="True"/>
                                <Condition Property="IsEnabled" Value="False"/>
                            </MultiTrigger.Conditions>
                            <Setter TargetName="GlyphFill" Property="Fill" Value="{StaticResource CheckBox.Glyph.Fill.Disabled}"/>
                        </MultiTrigger>

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

</ResourceDictionary>

备注：

{xx:SystemBrush ControlText}是{DynamicResource {x:Static SystemColors.ControlTextBrushKey}}的快捷方式。您可以使用shortcut或只使用正则表达式查找和替换。

不支持RTL，动画，奇怪的情况。

此样式比使用经过大量优化的BulletChrome慢。

Answer 5

以下代码是一个带有三种状态的示例复选框。

<Window x:Class="WpfApplication1.Window1"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="Window1" Height="300" Width="300">
<Window.Resources>
    <!-- Focus Style -->

    <SolidColorBrush x:Key="InputBackgroundFocused" Color="Orange"></SolidColorBrush>

    <Style x:Key="CheckBoxFocusVisualStyle">
        <Setter Property="Control.Template">
            <Setter.Value>
                <ControlTemplate>
                    <Border CornerRadius="2" Margin="0,0,4,3" BorderThickness="2" BorderBrush="{StaticResource InputBackgroundFocused}" Background="Transparent"/>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>

    <!-- Fill Brushes -->

    <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 TargetType="{x:Type CheckBox}">
        <Setter Property="SnapsToDevicePixels" Value="true"/>
        <Setter Property="OverridesDefaultStyle" Value="true"/>
        <Setter Property="FocusVisualStyle" Value="{DynamicResource CheckBoxFocusVisualStyle}" />
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="CheckBox">
                    <BulletDecorator Background="Transparent">
                        <BulletDecorator.Bullet>
                            <Border x:Name="Border"  
                              Width="17" 
                              Height="17" 
                              CornerRadius="2" 
                              Background="{StaticResource NormalBrush}"
                              BorderThickness="1"
                              BorderBrush="{StaticResource NormalBorderBrush}">
                                <Path 
                                Width="11" Height="11" 
                                x:Name="CheckMark"
                                SnapsToDevicePixels="False" 
                                Stroke="{StaticResource GlyphBrush}"
                                StrokeThickness="2"
                                Data="M 2,4 C 2,4 3,5 5,13 C 5,13 5,3 12,0" />
                            </Border>
                        </BulletDecorator.Bullet>
                        <ContentPresenter Margin="4,0,0,0"
                            VerticalAlignment="Center"
                            HorizontalAlignment="Left"
                            RecognizesAccessKey="True"/>
                    </BulletDecorator>
                    <ControlTemplate.Triggers>
                        <Trigger Property="IsChecked" Value="false">
                            <Setter TargetName="CheckMark" Property="Visibility" Value="Collapsed"/>
                        </Trigger>
                        <Trigger Property="IsChecked" Value="{x:Null}">
                            <Setter TargetName="CheckMark" Property="Data" Value="M 0 7 L 7 0" />
                        </Trigger>
                        <Trigger Property="IsMouseOver" Value="true">
                            <Setter TargetName="Border" Property="Background" Value="{StaticResource DarkBrush}" />
                        </Trigger>
                        <Trigger Property="IsPressed" Value="true">
                            <Setter TargetName="Border" Property="Background" Value="{StaticResource PressedBrush}" />
                            <Setter TargetName="Border" Property="BorderBrush" Value="{StaticResource PressedBorderBrush}" />
                        </Trigger>
                        <Trigger Property="IsEnabled" Value="false">
                            <Setter TargetName="Border" Property="Background" Value="{StaticResource DisabledBackgroundBrush}" />
                            <Setter TargetName="Border" Property="BorderBrush" Value="{StaticResource DisabledBorderBrush}" />
                            <Setter Property="Foreground" Value="{StaticResource DisabledForegroundBrush}"/>
                        </Trigger>
                    </ControlTemplate.Triggers>
                </ControlTemplate>

            </Setter.Value>
        </Setter>
    </Style>
</Window.Resources>
<Grid>
    <StackPanel>
    <CheckBox>Hello</CheckBox>
        <CheckBox IsThreeState="True">asdfsdaf</CheckBox>
        </StackPanel>
</Grid>

修改控件现有外观的最佳软件是Expression Blend。如果要更改现有外观，则必须修改控件的“控件模板”。

Answer 6

另一个选项可能是设置切换按钮的样式，因为它也有多个状态。在过去的项目中，我创建了自定义切换按钮，其中包含多个状态，这些状态看起来像chekcbox一样。我确实使用了混合来进行更改但是使用切换按钮作为基础我能够为按钮/ chekcbox的各种状态创建更加自定义的外观。使用切换按钮可以绕过许多与标准chekcbox控件紧密相关的chrome相关问题。

Answer 7

您是否考虑过使用SimpleStyles作为控制基础？

ExpressionSimpleStyles

通过从“资源”面板中选择此控件，Expression Blend将在您的项目中放置一个新的资源dictonary，您可以根据需要使用该资源修改样式。可能是一个更好的起点，而不是试图入侵Chrome标准复选框。

Answer 8

使用Blend中的模板：

要使BulletChrome正常工作，您需要添加对PresentationFramework.Aero 的引用，并为“theme”命名空间添加xml名称空间声明：

xmlns:theme="clr-namespace:Microsoft.Windows.Themes;assembly=PresentationFramework.Aero"

我自己没有试过，但我相信它应该可行（我已经用Luna完成了）。

Answer 9

您可以将复选框的IsThreeState属性设置为true。

但是，这允许将复选框的值切换为空如果这是不受欢迎的，您可以添加到CheckBox模板中作为空值的触发器，就像Greg Bacchus shows in his answer一样：

<ControlTemplate.Triggers>
    <Trigger Property="IsChecked" Value="{x:Null}">
        <!-- TODO: Do Stuff Here -->
    </Trigger>
</ControlTemplate.Triggers>

设置WPF复选框的不确定状态

9 个答案: