本文介紹了刪除菜單項周圍的細邊框的處理方法，對大家解決問題具有一定的參考價值，需要的朋友們下面隨著小編來一起學習吧！
問題描述
我根據我曾經收到的一些代碼創建了一個自定義菜單.看起來不錯，但我對如何去除整個菜單項部分周圍的黑色細邊框感到瘋狂?！這個邊界/填充在哪里定義?
I based a custom menu on some code I once received. It looks OK, but I'm going crazy over how to remove the thin black border around the entire section of menuitems?! Where is this border/padding defined?
感謝任何可以幫助我解決此問題的 WPF 專家 :)
Thanks to any WPF guru that might help me with this :)
有效的 XHTML http://img843.imageshack.us/img843/8813/testn.png
<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
<SolidColorBrush x:Key="HighlightedBackgroundBrush" Color="#003466" />
<SolidColorBrush x:Key="MenuBackgroundBrush" Color="#003466" />
<SolidColorBrush x:Key="NormalBorderBrush" Color="#FFFFFFFF" />
<SolidColorBrush x:Key="SolidMenuFontBrush" Color="#FFFFFFFF" />
<SolidColorBrush x:Key="HighlightedText" Color="#FFFFFFFF" />
<Style x:Key="{x:Type Menu}" TargetType="{x:Type Menu}">
<Setter Property="OverridesDefaultStyle" Value="True"/>
<Setter Property="SnapsToDevicePixels" Value="True"/>
<Setter Property="Height" Value="25"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type Menu}">
<Border Background="{DynamicResource AppBackground}"
BorderBrush="{DynamicResource AppBackground}"
BorderThickness="1">
<StackPanel ClipToBounds="True" Orientation="Vertical" IsItemsHost="True"/>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<Style x:Key="{x:Type MenuItem}" TargetType="{x:Type MenuItem}">
<Setter Property="OverridesDefaultStyle" Value="True"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type MenuItem}">
<Border x:Name="Border" BorderThickness="1">
<Grid Background="{DynamicResource AppBackground}">
<Grid.ColumnDefinitions>
<ColumnDefinition x:Name="Col0" MinWidth="17" Width="Auto" SharedSizeGroup="MenuItemIconColumnGroup"/>
<ColumnDefinition Width="Auto" SharedSizeGroup="MenuTextColumnGroup"/>
<ColumnDefinition Width="Auto" SharedSizeGroup="MenuItemIGTColumnGroup"/>
<ColumnDefinition x:Name="Col3" />
</Grid.ColumnDefinitions>
<!-- ContentPresenter to show an Icon if needed -->
<ContentPresenter Grid.Column="0" Margin="4,0,6,0" x:Name="Icon" VerticalAlignment="Center" ContentSource="Icon"/>
<!-- Glyph is a checkmark if needed for a checkable menu -->
<Grid Grid.Column="0" Visibility="Hidden" Margin="4,0,6,0" x:Name="GlyphPanel" VerticalAlignment="Center">
<Path x:Name="GlyphPanelpath" VerticalAlignment="Center" Fill="{TemplateBinding Foreground}" Data="M0,2 L0,4.8 L2.5,7.4 L7.1,2.8 L7.1,0 L2.5,4.6 z" FlowDirection="LeftToRight"/>
</Grid>
<!-- Content for the menu text etc -->
<ContentPresenter Grid.Column="1"
Margin="{TemplateBinding Padding}"
x:Name="HeaderHost"
RecognizesAccessKey="True"
ContentSource="Header"/>
<!-- Content for the menu IGT -->
<ContentPresenter Grid.Column="2"
Margin="8,1,8,1"
x:Name="IGTHost"
ContentSource="InputGestureText"
VerticalAlignment="Center"/>
<!-- Arrow drawn path which points to the next level of the menu -->
<Grid Grid.Column="3" Margin="4,0,6,0" x:Name="ArrowPanel" VerticalAlignment="Center">
<Path x:Name="ArrowPanelPath" HorizontalAlignment="Right" VerticalAlignment="Center" Fill="{TemplateBinding Foreground}" Data="M0,0 L0,8 L4,4 z"/>
</Grid>
<!-- The Popup is the body of the menu which expands down or across depending on the level of the item -->
<Popup IsOpen="{Binding Path=IsSubmenuOpen, RelativeSource={RelativeSource TemplatedParent}}" Placement="Right" x:Name="SubMenuPopup" Focusable="false" PopupAnimation="{DynamicResource {x:Static SystemParameters.MenuPopupAnimationKey}}">
<Border x:Name="SubMenuBorder" BorderBrush="{Binding Path=Foreground, RelativeSource={RelativeSource AncestorType={x:Type Menu}}}" BorderThickness="1" Padding="2,2,2,2">
<Grid x:Name="SubMenu" Grid.IsSharedSizeScope="True">
<!-- StackPanel holds children of the menu. This is set by IsItemsHost=True -->
<StackPanel IsItemsHost="True" KeyboardNavigation.DirectionalNavigation="Cycle"/>
</Grid>
</Border>
</Popup>
</Grid>
</Border>
<!-- These triggers re-configure the four arrangements of MenuItem to show different levels of menu via Role -->
<ControlTemplate.Triggers>
<!-- Role = TopLevelHeader : this is the root menu item in a menu; the Popup expands down -->
<Trigger Property="Role" Value="TopLevelHeader">
<Setter Property="Padding" Value="6,1,6,1"/>
<Setter Property="Placement" Value="Bottom" TargetName="SubMenuPopup"/>
<Setter Property="MinWidth" Value="2" TargetName="Col0"/>
<Setter Property="Width" Value="Auto" TargetName="Col3"/>
<Setter Property="Visibility" Value="Collapsed" TargetName="Icon"/>
<Setter Property="Visibility" Value="Collapsed" TargetName="GlyphPanel"/>
<Setter Property="Visibility" Value="Collapsed" TargetName="IGTHost"/>
<Setter Property="Visibility" Value="Collapsed" TargetName="ArrowPanel"/>
</Trigger>
<!-- Role = TopLevelItem : this is a child menu item from the top level without any child items-->
<Trigger Property="Role" Value="TopLevelItem">
<Setter Property="Padding" Value="6,1,6,1"/>
<Setter Property="Visibility" Value="Collapsed" TargetName="ArrowPanel"/>
</Trigger>
<!-- Role = SubMenuHeader : this is a child menu item which does not have children -->
<Trigger Property="Role" Value="SubmenuHeader">
<Setter Property="DockPanel.Dock" Value="Top"/>
<Setter Property="Padding" Value="0,2,0,2"/>
</Trigger>
<!-- Role = SubMenuItem : this is a child menu item which has children-->
<Trigger Property="Role" Value="SubmenuItem">
<Setter Property="DockPanel.Dock" Value="Top"/>
<Setter Property="Padding" Value="0,2,0,2"/>
<Setter Property="Visibility" Value="Collapsed" TargetName="ArrowPanel"/>
</Trigger>
<Trigger Property="IsSuspendingPopupAnimation" Value="true">
<Setter Property="PopupAnimation" Value="None" TargetName="SubMenuPopup"/>
</Trigger>
<!-- If no Icon is present the we collapse the Icon Content -->
<Trigger Property="Icon" Value="{x:Null}">
<Setter Property="Visibility" Value="Collapsed" TargetName="Icon"/>
</Trigger>
<!-- The GlyphPanel contains the CheckMark -->
<Trigger Property="IsChecked" Value="true">
<Setter Property="Visibility" Value="Visible" TargetName="GlyphPanel"/>
<Setter Property="Visibility" Value="Collapsed" TargetName="Icon"/>
</Trigger>
<!-- Using the system colors for the Menu Highlight and IsEnabled-->
<Trigger Property="IsHighlighted" Value="true">
<Setter Property="Background" Value="{DynamicResource HighlightedBackgroundBrush}" TargetName="Border"/>
<Setter Property="Foreground" Value="{DynamicResource HighlightedText}"/>
<Setter Property="BorderBrush" Value="{DynamicResource NormalBorderBrush}" TargetName="Border"/>
</Trigger>
<Trigger Property="IsHighlighted" Value="false">
<Setter Property="Background" Value="{DynamicResource AppBackground}" TargetName="Border"/>
<Setter Property="Foreground" Value="{DynamicResource SolidMenuFontBrush}"/>
<Setter Property="BorderBrush" Value="{DynamicResource AppBackground}" TargetName="Border"/>
</Trigger>
<Trigger Property="IsEnabled" Value="false">
<Setter Property="Foreground" Value="LightGray"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</ResourceDictionary>
推薦答案
...
<!-- The Popup is the body of the menu which expands down or across depending on the level of the item -->
<Popup ...>
<Border x:Name="SubMenuBorder" ... Padding="0">...</Border>...</Popup>
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