xaml – Windows 8中的ScrollViewer：始终显示垂直滚动条

发布时间：2020-12-14 05:26:05 所属栏目：Windows 来源：网络整理

导读：如何在滚动查看器中始终显示垂直滚动条？它会在几秒钟内消失,但我想在滚动可用时始终显示滚动谢谢你的帮助解决方法我认为 Windows 8 Consumer Preview中的控件可能存在错误,因为以下内容通常可以正常工作： ScrollViewer Style="{StaticResource Vertica

如何在滚动查看器中始终显示垂直滚动条？

它会在几秒钟内消失,但我想在滚动可用时始终显示滚动

谢谢你的帮助

解决方法

我认为 Windows 8 Consumer Preview中的控件可能存在错误,因为以下内容通常可以正常工作：

<ScrollViewer
    Style="{StaticResource VerticalScrollViewerStyle}"
    VerticalScrollBarVisibility="Visible"
    Template="{StaticResource ScrollViewerControlTemplate1}">

作为解决方法,您可以修改ScrollViewer的模板：

<ScrollViewer
    Style="{StaticResource VerticalScrollViewerStyle}"
    Template="{StaticResource ScrollViewerControlTemplate1}">

…某些ResourceDictionary中的其他地方 – 删除了“NoIndicator”VisualState的修改后的标准ScrollViewer模板.

<ControlTemplate
        x:Key="ScrollViewerControlTemplate1"
        TargetType="ScrollViewer">
        <Border
            BorderBrush="{TemplateBinding BorderBrush}"
            BorderThickness="{TemplateBinding BorderThickness}">
            <VisualStateManager.VisualStateGroups>
                <VisualStateGroup
                    x:Name="ScrollingIndicatorStates">
                    <VisualState
                        x:Name="TouchIndicator">
                        <Storyboard>
                            <FadeOutThemeAnimation
                                TargetName="ScrollBarSeparator" />
                            <ObjectAnimationUsingKeyFrames
                                Storyboard.TargetName="VerticalScrollBar"
                                Storyboard.TargetProperty="IndicatorMode"
                                Duration="0">
                                <DiscreteObjectKeyFrame
                                    KeyTime="0">
                                    <DiscreteObjectKeyFrame.Value>
                                        <ScrollingIndicatorMode>TouchIndicator</ScrollingIndicatorMode>
                                    </DiscreteObjectKeyFrame.Value>
                                </DiscreteObjectKeyFrame>
                            </ObjectAnimationUsingKeyFrames>
                            <ObjectAnimationUsingKeyFrames
                                Storyboard.TargetName="HorizontalScrollBar"
                                Storyboard.TargetProperty="IndicatorMode"
                                Duration="0">
                                <DiscreteObjectKeyFrame
                                    KeyTime="0">
                                    <DiscreteObjectKeyFrame.Value>
                                        <ScrollingIndicatorMode>TouchIndicator</ScrollingIndicatorMode>
                                    </DiscreteObjectKeyFrame.Value>
                                </DiscreteObjectKeyFrame>
                            </ObjectAnimationUsingKeyFrames>
                        </Storyboard>
                    </VisualState>
                    <VisualState
                        x:Name="MouseIndicator">
                        <Storyboard>
                            <FadeInThemeAnimation
                                TargetName="ScrollBarSeparator" />
                            <ObjectAnimationUsingKeyFrames
                                Storyboard.TargetName="VerticalScrollBar"
                                Storyboard.TargetProperty="IndicatorMode"
                                Duration="0">
                                <DiscreteObjectKeyFrame
                                    KeyTime="0">
                                    <DiscreteObjectKeyFrame.Value>
                                        <ScrollingIndicatorMode>MouseIndicator</ScrollingIndicatorMode>
                                    </DiscreteObjectKeyFrame.Value>
                                </DiscreteObjectKeyFrame>
                            </ObjectAnimationUsingKeyFrames>
                            <ObjectAnimationUsingKeyFrames
                                Storyboard.TargetName="HorizontalScrollBar"
                                Storyboard.TargetProperty="IndicatorMode"
                                Duration="0">
                                <DiscreteObjectKeyFrame
                                    KeyTime="0">
                                    <DiscreteObjectKeyFrame.Value>
                                        <ScrollingIndicatorMode>MouseIndicator</ScrollingIndicatorMode>
                                    </DiscreteObjectKeyFrame.Value>
                                </DiscreteObjectKeyFrame>
                            </ObjectAnimationUsingKeyFrames>
                        </Storyboard>
                    </VisualState>
                </VisualStateGroup>
            </VisualStateManager.VisualStateGroups>
            <Grid
                Background="{TemplateBinding Background}">
                <Grid.ColumnDefinitions>
                    <ColumnDefinition
                        Width="*" />
                    <ColumnDefinition
                        Width="Auto" />
                </Grid.ColumnDefinitions>
                <Grid.RowDefinitions>
                    <RowDefinition
                        Height="*" />
                    <RowDefinition
                        Height="Auto" />
                </Grid.RowDefinitions>
                <ScrollContentPresenter
                    x:Name="ScrollContentPresenter"
                    Grid.RowSpan="2"
                    Grid.ColumnSpan="2"
                    ContentTemplate="{TemplateBinding ContentTemplate}"
                    Margin="{TemplateBinding Padding}" />
                <ScrollBar
                    x:Name="VerticalScrollBar"
                    Grid.Column="1"
                    IsTabStop="False"
                    Maximum="{TemplateBinding ScrollableHeight}"
                    Margin="1,0"
                    Orientation="Vertical"
                    Visibility="{TemplateBinding ComputedVerticalScrollBarVisibility}"
                    Value="{TemplateBinding VerticalOffset}"
                    ViewportSize="{TemplateBinding ViewportHeight}"
                    HorizontalAlignment="Right" />
                <ScrollBar
                    x:Name="HorizontalScrollBar"
                    IsTabStop="False"
                    Maximum="{TemplateBinding ScrollableWidth}"
                    Margin="0,1,0"
                    Orientation="Horizontal"
                    Grid.Row="1"
                    Visibility="{TemplateBinding ComputedHorizontalScrollBarVisibility}"
                    Value="{TemplateBinding HorizontalOffset}"
                    ViewportSize="{TemplateBinding ViewportWidth}" />
                <Rectangle
                    x:Name="ScrollBarSeparator"
                    Grid.Row="1"
                    Grid.Column="1"
                    Margin="1,0"
                    StrokeThickness="1"
                    Fill="{StaticResource ScrollBarTrackBrush}"
                    Stroke="{StaticResource ScrollBarTrackBorderBrush}" />
            </Grid>
        </Border>
    </ControlTemplate>

（编辑：李大同）

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