当鼠标进入WPF时，我们如何在WPF的菜单背景中添加颜色？ [英] How we can add color in menu background in WPF when mouse enter on it?

问题描述

当我们触发像IsMouseOver这样的触发器时，如何设置菜单项的背景颜色。



我尝试了什么：



我将在wpf中使用模板和触发器，但这将无法正常工作

How to set background color of an menuitem when we fire trigger like IsMouseOver.

What I have tried:

I will use an templates and triggers in wpf, but this will not working properly

推荐答案

<pre>  <LinearGradientBrush x:Key="DarkBrush" StartPoint="0.5,0" EndPoint="0.5,1">
            <GradientBrush.GradientStops>
                <GradientStopCollection>
                    <GradientStop Color="#939393" Offset="0.0"/>
                    <GradientStop Color="#717171" Offset="0.05"/>
                    <GradientStop Color="#606060" Offset="1.0"/>
                </GradientStopCollection>
            </GradientBrush.GradientStops>
        </LinearGradientBrush>

<LinearGradientBrush x:Key="Clicked" StartPoint="0.5,0" EndPoint="0.5,1">
           <GradientBrush.GradientStops>
               <GradientStopCollection>
                   <GradientStop Color="#363636" Offset="0.0"/>
                   <GradientStop Color="#393939" Offset="1.0"/>
               </GradientStopCollection>
           </GradientBrush.GradientStops>
       </LinearGradientBrush>

<Style x:Key="{x:Type Menu}" TargetType="Menu">
         <Setter Property="OverridesDefaultStyle" Value="True"/>
         <Setter Property="SnapsToDevicePixels" Value="True"/>
         <Setter Property="Foreground" Value="White"/>
         <Setter Property="Template">
             <Setter.Value>
                 <ControlTemplate TargetType="Menu">
                     <Border x:Name="MainMenu" Background="Black">
                         <StackPanel ClipToBounds="True" Orientation="Horizontal" IsItemsHost="True"/>
                     </Border>
                 </ControlTemplate>
             </Setter.Value>
         </Setter>
     </Style>

<ControlTemplate x:Key="{x:Static MenuItem.SubmenuItemTemplateKey}" TargetType="MenuItem">
           <Border Background="Black" x:Name="_grid" Padding="0" BorderThickness="0" BorderBrush="Black" >
               <Grid >
                   <Grid.ColumnDefinitions>
                       <ColumnDefinition Width="Auto" MinWidth="24" SharedSizeGroup="IconGroup"/>
                       <ColumnDefinition Width="Auto" MinWidth="30" />
                       <ColumnDefinition Width="20" />
                   </Grid.ColumnDefinitions>
                   <Grid.RowDefinitions>
                       <RowDefinition Height="20"></RowDefinition>
                   </Grid.RowDefinitions>
                   <ContentPresenter ContentSource="Icon" Margin="{TemplateBinding Padding}" />
                   <ContentPresenter Grid.Column="1" Grid.Row="0" VerticalAlignment="Center" ContentSource="Header" RecognizesAccessKey="True" />
               </Grid>
           </Border>
           <ControlTemplate.Triggers>
               <Trigger Property="IsHighlighted" Value="True">
                   <Setter Property="Background" Value="DarkGray" TargetName="_grid"/>
                   <Setter Property="BorderBrush" Value="DarkGray" TargetName="_grid"/>
                   <Setter Property="Foreground" Value="White" />
               </Trigger>
           </ControlTemplate.Triggers>
       </ControlTemplate>

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