我不是WPF的专家,但是我在网上找到了类似OS X的滚动条的样式.它看起来不错,并且确实可以用鼠标滚轮以预期的方式滚动,但是奇怪的是,如果用鼠标拖动滚动条,它实际上并没有滚动内容,它只是在屏幕上移动了滚动条.这种风格有什么问题？
我不会假装我完全了解这种样式的所有情况,但是我一直在研究各个样式的文档,到目前为止,我还不能弄清楚出了什么问题.
XAML：
<Style x:Key="ScrollBarTrackThumb"
TargetType="{x:Type Thumb}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type Thumb}">
<Grid x:Name="Grid">
<Rectangle HorizontalAlignment="Stretch"
VerticalAlignment="Stretch"
Width="Auto"
Height="Auto"
Fill="Transparent" />
<Border x:Name="CornerScrollBarRectangle"
CornerRadius="5"
HorizontalAlignment="Stretch"
VerticalAlignment="Stretch"
Width="Auto"
Height="Auto"
Margin="0,1,0,1"
Background="{TemplateBinding Background}" />
</Grid>
<ControlTemplate.Triggers>
<Trigger Property="Tag"
Value="Horizontal">
<Setter TargetName="CornerScrollBarRectangle"
Property="Width"
Value="Auto" />
<Setter TargetName="CornerScrollBarRectangle"
Property="Height"
Value="6" />
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<Style TargetType="{x:Type ScrollBar}" x:Key="BlackBGScrollBar">
<Setter Property="Stylus.IsFlicksEnabled"
Value="false" />
<Setter Property="Foreground"
Value="#ADABAB" />
<Setter Property="Background"
Value="Transparent" />
<Setter Property="Width"
Value="7" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type ScrollBar}">
<Grid x:Name="GridRoot"
Width="7"
Background="{TemplateBinding Background}">
<Grid.RowDefinitions>
<RowDefinition Height="0.00001*" />
</Grid.RowDefinitions>
<Track x:Name="PART_Track"
Grid.Row="0"
IsDirectionReversed="true"
Focusable="false">
<Track.Thumb>
<Thumb x:Name="Thumb"
Background="{TemplateBinding Foreground}"
Style="{DynamicResource ScrollBarTrackThumb}" />
</Track.Thumb>
<Track.IncreaseRepeatButton>
<RepeatButton x:Name="PageUp"
Command="ScrollBar.PageDownCommand"
Opacity="0"
Focusable="false" />
</Track.IncreaseRepeatButton>
<Track.DecreaseRepeatButton>
<RepeatButton x:Name="PageDown"
Command="ScrollBar.PageUpCommand"
Opacity="0"
Focusable="false" />
</Track.DecreaseRepeatButton>
</Track>
</Grid>
<ControlTemplate.Triggers>
<Trigger SourceName="Thumb"
Property="IsMouseOver"
Value="true">
<Setter Value="{DynamicResource ButtonSelectBrush}"
TargetName="Thumb"
Property="Background" />
</Trigger>
<Trigger SourceName="Thumb"
Property="IsDragging"
Value="true">
<Setter Value="{DynamicResource DarkBrush}"
TargetName="Thumb"
Property="Background" />
</Trigger>
<Trigger Property="IsEnabled"
Value="false">
<Setter TargetName="Thumb"
Property="Visibility"
Value="Collapsed" />
</Trigger>
<Trigger Property="Orientation"
Value="Horizontal">
<Setter TargetName="GridRoot"
Property="LayoutTransform">
<Setter.Value>
<RotateTransform Angle="-90" />
</Setter.Value>
</Setter>
<Setter TargetName="PART_Track"
Property="LayoutTransform">
<Setter.Value>
<RotateTransform Angle="-90" />
</Setter.Value>
</Setter>
<Setter Property="Width"
Value="Auto" />
<Setter Property="Height"
Value="8" />
<Setter TargetName="Thumb"
Property="Tag"
Value="Horizontal" />
<Setter TargetName="PageDown"
Property="Command"
Value="ScrollBar.PageLeftCommand" />
<Setter TargetName="PageUp"
Property="Command"
Value="ScrollBar.PageRightCommand" />
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<Style TargetType="ScrollViewer" x:Key="BlackBGScrollViewer">
<Setter Property="HorizontalContentAlignment" Value="Left" />
<Setter Property="VerticalContentAlignment" Value="Top" />
<Setter Property="VerticalScrollBarVisibility" Value="Visible" />
<Setter Property="Padding" Value="4"/>
<Setter Property="BorderThickness" Value="0"/>
<Setter Property="BorderBrush">
<Setter.Value>
<LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0">
<GradientStop Color="#FFA3AEB9" Offset="0"/>
<GradientStop Color="#FF8399A9" Offset="0.375"/>
<GradientStop Color="#FF718597" Offset="0.375"/>
<GradientStop Color="#FF617584" Offset="1"/>
</LinearGradientBrush>
</Setter.Value>
</Setter>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="ScrollViewer">
<Border CornerRadius="2" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}">
<Grid Background="{TemplateBinding Background}">
<Grid.RowDefinitions>
<RowDefinition Height="*"/>
<RowDefinition Height="Auto"/>
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*"/>
<ColumnDefinition Width="Auto"/>
</Grid.ColumnDefinitions>
<ScrollContentPresenter x:Name="ScrollContentPresenter"
Cursor="{TemplateBinding Cursor}"
Margin="{TemplateBinding Padding}"
ContentTemplate="{TemplateBinding ContentTemplate}"/>
<Rectangle Grid.Column="1" Grid.Row="1" Fill="#FFE9EEF4"/>
<ScrollBar x:Name="VerticalScrollBar" Width="18"
IsTabStop="False"
Visibility="{TemplateBinding ComputedVerticalScrollBarVisibility}"
Grid.Column="1" Grid.Row="0" Orientation="Vertical"
ViewportSize="{TemplateBinding ViewportHeight}"
Maximum="{TemplateBinding ScrollableHeight}"
Minimum="0"
Value="{TemplateBinding VerticalOffset}"
Margin="0,-1,-1,-1"
Style="{StaticResource BlackBGScrollBar}"/>
<ScrollBar x:Name="HorizontalScrollBar" Height="18"
IsTabStop="False"
Visibility="{TemplateBinding ComputedHorizontalScrollBarVisibility}"
Grid.Column="0" Grid.Row="1" Orientation="Horizontal"
ViewportSize="{TemplateBinding ViewportWidth}"
Maximum="{TemplateBinding ScrollableWidth}"
Minimum="0"
Value="{TemplateBinding HorizontalOffset}"
Margin="-1,0,-1,-1"
Style="{StaticResource BlackBGScrollBar}"/>
</Grid>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
解决方法:
弄清楚了.
在ScrollViewer样式的底部,标签需要具有名称“ PART_VerticalScrollBar”和“ PART_HorizontalScrollBar”,而不仅仅是“ VerticalScrollBar”和“ HorizontalScrollBar”.