そのため、デフォルトの ComboBox を使用して選択肢のリストを表示しようとしています。コンボボックスを選択したときにポップアップするコンテキストメニューの背景を透明にしたい。これを行うプロパティまたはスタイルを見つけることができず、これを行う方法があまり見つかりません。前もって感謝します！
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ComboBoxVisual Studio デザイナー ビューまたは Blendの現在のテンプレートのコピーを抽出し、名前付きの "PopupBorder"のBackgroundプロパティを. デフォルトでは、を使用しています。BorderTransparent{StaticResource ComboBoxPopupBackgroundThemeBrush}
更新されたStyleリソースのコピーを次に示します。
<Style
x:Key="ComboBoxStyle1"
TargetType="ComboBox">
<Setter
Property="Padding"
Value="8,0" />
<Setter
Property="Foreground"
Value="{StaticResource ComboBoxForegroundThemeBrush}" />
<Setter
Property="Background"
Value="{StaticResource ComboBoxBackgroundThemeBrush}" />
<Setter
Property="BorderBrush"
Value="{StaticResource ComboBoxBorderThemeBrush}" />
<Setter
Property="BorderThickness"
Value="{StaticResource ComboBoxBorderThemeThickness}" />
<Setter
Property="TabNavigation"
Value="Once" />
<Setter
Property="ScrollViewer.HorizontalScrollBarVisibility"
Value="Disabled" />
<Setter
Property="ScrollViewer.VerticalScrollBarVisibility"
Value="Auto" />
<Setter
Property="ScrollViewer.HorizontalScrollMode"
Value="Disabled" />
<Setter
Property="ScrollViewer.VerticalScrollMode"
Value="Auto" />
<Setter
Property="ScrollViewer.IsVerticalRailEnabled"
Value="True" />
<Setter
Property="ScrollViewer.IsDeferredScrollingEnabled"
Value="False" />
<Setter
Property="ScrollViewer.BringIntoViewOnFocusChange"
Value="True" />
<Setter
Property="HorizontalContentAlignment"
Value="Stretch" />
<Setter
Property="FontFamily"
Value="{StaticResource ContentControlThemeFontFamily}" />
<Setter
Property="FontSize"
Value="{StaticResource ControlContentThemeFontSize}" />
<Setter
Property="ItemsPanel">
<Setter.Value>
<ItemsPanelTemplate>
<CarouselPanel />
</ItemsPanelTemplate>
</Setter.Value>
</Setter>
<Setter
Property="Template">
<Setter.Value>
<ControlTemplate
TargetType="ComboBox">
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition
Width="*" />
<ColumnDefinition
Width="32" />
</Grid.ColumnDefinitions>
<VisualStateManager.VisualStateGroups>
<VisualStateGroup
x:Name="CommonStates">
<VisualState
x:Name="Normal" />
<VisualState
x:Name="PointerOver">
<Storyboard>
<ObjectAnimationUsingKeyFrames
Storyboard.TargetProperty="Background"
Storyboard.TargetName="Background">
<DiscreteObjectKeyFrame
KeyTime="0"
Value="{StaticResource ComboBoxPointerOverBackgroundThemeBrush}" />
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames
Storyboard.TargetProperty="BorderBrush"
Storyboard.TargetName="Background">
<DiscreteObjectKeyFrame
KeyTime="0"
Value="{StaticResource ComboBoxPointerOverBorderThemeBrush}" />
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames
Storyboard.TargetProperty="Fill"
Storyboard.TargetName="Highlight">
<DiscreteObjectKeyFrame
KeyTime="0"
Value="{StaticResource ComboBoxSelectedPointerOverBackgroundThemeBrush}" />
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
<VisualState
x:Name="Pressed">
<Storyboard>
<ObjectAnimationUsingKeyFrames
Storyboard.TargetProperty="Background"
Storyboard.TargetName="Background">
<DiscreteObjectKeyFrame
KeyTime="0"
Value="{StaticResource ComboBoxPressedBackgroundThemeBrush}" />
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames
Storyboard.TargetProperty="BorderBrush"
Storyboard.TargetName="Background">
<DiscreteObjectKeyFrame
KeyTime="0"
Value="{StaticResource ComboBoxPressedBorderThemeBrush}" />
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames
Storyboard.TargetProperty="Foreground"
Storyboard.TargetName="ContentPresenter">
<DiscreteObjectKeyFrame
KeyTime="0"
Value="{StaticResource ComboBoxPressedForegroundThemeBrush}" />
</ObjectAnimationUsingKeyFrames>
<DoubleAnimation
Duration="0"
To="1"
Storyboard.TargetProperty="Opacity"
Storyboard.TargetName="PressedBackground" />
<ObjectAnimationUsingKeyFrames
Storyboard.TargetProperty="Foreground"
Storyboard.TargetName="DropDownGlyph">
<DiscreteObjectKeyFrame
KeyTime="0"
Value="{StaticResource ComboBoxArrowPressedForegroundThemeBrush}" />
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
<VisualState
x:Name="Disabled">
<Storyboard>
<ObjectAnimationUsingKeyFrames
Storyboard.TargetProperty="Background"
Storyboard.TargetName="Background">
<DiscreteObjectKeyFrame
KeyTime="0"
Value="{StaticResource ComboBoxDisabledBackgroundThemeBrush}" />
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames
Storyboard.TargetProperty="BorderBrush"
Storyboard.TargetName="Background">
<DiscreteObjectKeyFrame
KeyTime="0"
Value="{StaticResource ComboBoxDisabledBorderThemeBrush}" />
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames
Storyboard.TargetProperty="Foreground"
Storyboard.TargetName="ContentPresenter">
<DiscreteObjectKeyFrame
KeyTime="0"
Value="{StaticResource ComboBoxDisabledForegroundThemeBrush}" />
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames
Storyboard.TargetProperty="Foreground"
Storyboard.TargetName="DropDownGlyph">
<DiscreteObjectKeyFrame
KeyTime="0"
Value="{StaticResource ComboBoxArrowDisabledForegroundThemeBrush}" />
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
</VisualStateGroup>
<VisualStateGroup
x:Name="FocusStates">
<VisualState
x:Name="Focused">
<Storyboard>
<DoubleAnimation
Duration="0"
To="1"
Storyboard.TargetProperty="Opacity"
Storyboard.TargetName="HighlightBackground" />
<DoubleAnimation
Duration="0"
To="1"
Storyboard.TargetProperty="Opacity"
Storyboard.TargetName="Highlight" />
<ObjectAnimationUsingKeyFrames
Storyboard.TargetProperty="Foreground"
Storyboard.TargetName="ContentPresenter">
<DiscreteObjectKeyFrame
KeyTime="0"
Value="{StaticResource ComboBoxFocusedForegroundThemeBrush}" />
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
<VisualState
x:Name="FocusedPressed">
<Storyboard>
<ObjectAnimationUsingKeyFrames
Storyboard.TargetProperty="Foreground"
Storyboard.TargetName="ContentPresenter">
<DiscreteObjectKeyFrame
KeyTime="0"
Value="{StaticResource ComboBoxPressedForegroundThemeBrush}" />
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames
Storyboard.TargetProperty="Fill"
Storyboard.TargetName="Highlight">
<DiscreteObjectKeyFrame
KeyTime="0"
Value="{StaticResource ComboBoxPressedHighlightThemeBrush}" />
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
<VisualState
x:Name="Unfocused" />
<VisualState
x:Name="PointerFocused" />
<VisualState
x:Name="FocusedDropDown">
<Storyboard>
<ObjectAnimationUsingKeyFrames
Duration="0"
Storyboard.TargetProperty="Visibility"
Storyboard.TargetName="PopupBorder">
<DiscreteObjectKeyFrame
KeyTime="0">
<DiscreteObjectKeyFrame.Value>
<Visibility>Visible</Visibility>
</DiscreteObjectKeyFrame.Value>
</DiscreteObjectKeyFrame>
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
</VisualStateGroup>
<VisualStateGroup
x:Name="DropDownStates">
<VisualState
x:Name="Opened">
<Storyboard>
<SplitOpenThemeAnimation
ClosedTargetName="ContentPresenter"
ContentTranslationOffset="0"
ContentTargetName="ScrollViewer"
ClosedLength="{Binding TemplateSettings.DropDownClosedHeight, RelativeSource={RelativeSource Mode=TemplatedParent}}"
OffsetFromCenter="{Binding TemplateSettings.DropDownOffset, RelativeSource={RelativeSource Mode=TemplatedParent}}"
OpenedTargetName="PopupBorder"
OpenedLength="{Binding TemplateSettings.DropDownOpenedHeight, RelativeSource={RelativeSource Mode=TemplatedParent}}" />
</Storyboard>
</VisualState>
<VisualState
x:Name="Closed">
<Storyboard>
<SplitCloseThemeAnimation
ClosedTargetName="ContentPresenter"
ContentTranslationOffset="40"
ContentTranslationDirection="{Binding TemplateSettings.SelectedItemDirection, RelativeSource={RelativeSource Mode=TemplatedParent}}"
ContentTargetName="ScrollViewer"
ClosedLength="{Binding TemplateSettings.DropDownClosedHeight, RelativeSource={RelativeSource Mode=TemplatedParent}}"
OffsetFromCenter="{Binding TemplateSettings.DropDownOffset, RelativeSource={RelativeSource Mode=TemplatedParent}}"
OpenedTargetName="PopupBorder"
OpenedLength="{Binding TemplateSettings.DropDownOpenedHeight, RelativeSource={RelativeSource Mode=TemplatedParent}}" />
</Storyboard>
</VisualState>
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>
<Border
x:Name="Background"
BorderBrush="{TemplateBinding BorderBrush}"
BorderThickness="{TemplateBinding BorderThickness}"
Background="{TemplateBinding Background}"
Grid.ColumnSpan="2" />
<Rectangle
x:Name="PressedBackground"
Fill="{StaticResource ComboBoxPressedHighlightThemeBrush}"
Margin="{TemplateBinding BorderThickness}"
Opacity="0" />
<Border
x:Name="HighlightBackground"
BorderBrush="{StaticResource ComboBoxFocusedBorderThemeBrush}"
BorderThickness="{TemplateBinding BorderThickness}"
Background="{StaticResource ComboBoxFocusedBackgroundThemeBrush}"
Grid.ColumnSpan="2"
Opacity="0" />
<Rectangle
x:Name="Highlight"
Fill="{StaticResource ComboBoxSelectedBackgroundThemeBrush}"
Margin="{TemplateBinding BorderThickness}"
Opacity="0" />
<ContentPresenter
x:Name="ContentPresenter"
HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}"
Margin="{TemplateBinding Padding}"
VerticalAlignment="{TemplateBinding VerticalContentAlignment}" />
<TextBlock
x:Name="DropDownGlyph"
Grid.Column="1"
Foreground="{StaticResource ComboBoxArrowForegroundThemeBrush}"
FontWeight="Bold"
FontSize="{StaticResource ComboBoxArrowThemeFontSize}"
FontFamily="{StaticResource SymbolThemeFontFamily}"
HorizontalAlignment="Right"
IsHitTestVisible="False"
Margin="0,0,6,4"
Text=""
VerticalAlignment="Center" />
<Popup
x:Name="Popup">
<Border
x:Name="PopupBorder"
BorderBrush="{StaticResource ComboBoxPopupBorderThemeBrush}"
BorderThickness="{StaticResource ComboBoxPopupBorderThemeThickness}"
Background="Transparent"
HorizontalAlignment="Stretch">
<ScrollViewer
x:Name="ScrollViewer"
BringIntoViewOnFocusChange="{TemplateBinding ScrollViewer.BringIntoViewOnFocusChange}"
Foreground="{StaticResource ComboBoxPopupForegroundThemeBrush}"
HorizontalScrollMode="{TemplateBinding ScrollViewer.HorizontalScrollMode}"
HorizontalScrollBarVisibility="{TemplateBinding ScrollViewer.HorizontalScrollBarVisibility}"
IsHorizontalRailEnabled="{TemplateBinding ScrollViewer.IsHorizontalRailEnabled}"
IsVerticalRailEnabled="{TemplateBinding ScrollViewer.IsVerticalRailEnabled}"
IsDeferredScrollingEnabled="{TemplateBinding ScrollViewer.IsDeferredScrollingEnabled}"
VerticalSnapPointsType="OptionalSingle"
VerticalScrollBarVisibility="{TemplateBinding ScrollViewer.VerticalScrollBarVisibility}"
VerticalScrollMode="{TemplateBinding ScrollViewer.VerticalScrollMode}"
VerticalSnapPointsAlignment="Near"
ZoomMode="Disabled">
<ItemsPresenter />
</ScrollViewer>
</Border>
</Popup>
</Grid>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
于 2013-03-18T22:15:00.440 に答える