您必须修改控件模板或样式才能更改现有可用控件的外观和风格。看看这个示例,它与您的要求有些相似。我所做的是我更改了 Chrome(Windows 的默认样式)并使用边框和内容演示器创建了我自己的样式。然后我为该样式创建了触发器。为了可视化,在鼠标悬停和 ischecked 事件中,我正在更改边框的背景颜色。
<Window.Resources>
<Style x:Key="ToggleButtonStyle1" TargetType="{x:Type ToggleButton}">
<Setter Property="BorderThickness" Value="1"/>
<Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.ControlTextBrushKey}}"/>
<Setter Property="HorizontalContentAlignment" Value="Center"/>
<Setter Property="VerticalContentAlignment" Value="Center"/>
<Setter Property="Padding" Value="1"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type ToggleButton}">
<Border x:Name="border">
<ContentPresenter
SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"
RecognizesAccessKey="True" TextElement.Foreground="White" HorizontalAlignment="Center"/>
</Border>
<ControlTemplate.Triggers>
<Trigger Property="IsKeyboardFocused" Value="true"/>
<Trigger Property="IsChecked" Value="true">
<Setter Property="Background" TargetName="border" Value="#FF6C6C6C"/>
<Setter Property="CornerRadius" TargetName="border" Value="5"/>
</Trigger>
<Trigger Property="IsMouseOver" Value="True">
<Setter Property="Background" TargetName="border" Value="#FF282828"/>
</Trigger>
<Trigger Property="IsEnabled" Value="false">
<Setter Property="Foreground" Value="#ADADAD"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</Window.Resources>
<Grid x:Name="LayoutRoot">
<ToggleButton HorizontalAlignment="Left" Margin="136,59,0,0" Style="{DynamicResource ToggleButtonStyle1}" VerticalAlignment="Top" Width="27" Height="24" Content="-" FontSize="21.333" FontWeight="Bold" HorizontalContentAlignment="Center" Padding="0" VerticalContentAlignment="Center" IsThreeState="True"/>
</Grid>
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