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我将 WPF 用于使用 .NET 框架 3.5 的 Visual Studio WPF 2008 项目。我对 WPF 尤其是 Expression Blend 3 都是新手，我正在尝试使用它来设计用户界面。我为主窗口定义了一个漂亮的 2 色渐变背景。当没有菜单定义时，它与以下 XAML 代码一起很好地显示：

<Window
   xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
   xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
   xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
   x:Class="XYZZY.MainWindow"
   x:Name="Window"
   Title="XYZZY Lobby" HorizontalAlignment="Center"
   Width="796" Height="480" mc:Ignorable="d">
   <Window.Background>
      <LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0">
         <GradientStop Color="#FF434D7A" Offset="0"/>
         <GradientStop Color="#FF180CFA" Offset="1"/>
      </LinearGradientBrush>
   </Window.Background>

   <Grid x:Name="LayoutRoot" Width="764">
      <Path Fill="Black" Stretch="Fill" Stroke="Black" HorizontalAlignment="Left" Margin="-227,0,0,184" VerticalAlignment="Bottom" Width="1" Height="1" Data="M-227,256"/>
       <ListView HorizontalAlignment="Left" Width="239" Margin="0,148,0,45">
        <ListView.View>
         <GridView>
          <GridViewColumn Width="90" Header="Game" />
          <GridViewColumn Width="60" Header="Stakes" />
          <GridViewColumn Width="35" Header="Seats" />
         </GridView>
        </ListView.View>
       </ListView>
       <ListView Margin="239,148,218,45">
         <ListView.View>
            <GridView>
                <GridViewColumn Width="90" Header="Table" />
                <GridViewColumn Width="15" Header="Players" />
                <GridViewColumn Width="60" Header="Buy-in" />
                <GridViewColumn Width="50" Header="Speed" />
                <GridViewColumn Width="25" Header="H/Hr" />
                <GridViewColumn Width="35" Header="Avg Pot" />
               <GridViewColumn/>
            </GridView>
         </ListView.View>
       </ListView>
       <ListView Margin="546,148,0,45">
         <ListView.View>
            <GridView>
               <GridViewColumn Width="90" Header="Player" />
               <GridViewColumn Width="60" Header="City" />
               <GridViewColumn Width="35" Header="Chips" />
            </GridView>
         </ListView.View>
       </ListView>
       <TextBlock x:Name="LobbyServerLabel" HorizontalAlignment="Left" VerticalAlignment="Bottom" TextWrapping="Wrap" Text="Lobby Server - not connected"/>
       <TextBlock x:Name="GameServerLabel" HorizontalAlignment="Center" VerticalAlignment="Bottom" TextWrapping="Wrap"><Run Text="Game Server - not connected"/></TextBlock>
       <Label x:Name="SkinName1" Margin="8,54,0,0" VerticalAlignment="Top" Content="XYZZY" FontSize="36" Foreground="#FFD23C32" HorizontalAlignment="Left" FontFamily="Georgia" FontWeight="Bold"/>
       <Label x:Name="SkinName2" Margin="182.405,54,459,0" VerticalAlignment="Top" Content="A A" FontSize="36" Foreground="#FFD23C32" FontFamily="Georgia" FontWeight="Bold"/>
       <Image VerticalAlignment="Top" Width="41.81" Height="51.519" Source="Spade1.png" Stretch="Fill" Margin="136.595,53.384,585.595,0"/>
   </Grid>
</Window>

但是，一旦我添加了一个菜单，菜单的背景颜色似乎会取代窗口其余部分的背景颜色。这是与菜单定义相同的代码：

<Window
   xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
   xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
   xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
   x:Class="AttackPoker2.MainWindow"
   x:Name="Window"
   Title="Attack Poker Lobby" HorizontalAlignment="Center"
   Width="796" Height="480" mc:Ignorable="d">
   <Window.Background>
      <LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0">
         <GradientStop Color="#FF434D7A" Offset="0"/>
         <GradientStop Color="#FF180CFA" Offset="1"/>
      </LinearGradientBrush>
   </Window.Background>

   <Grid x:Name="LayoutRoot" Width="764">
      <Path Fill="Black" Stretch="Fill" Stroke="Black" HorizontalAlignment="Left" Margin="-227,0,0,184" VerticalAlignment="Bottom" Width="1" Height="1" Data="M-227,256"/>
        <Menu>
          <MenuItem Header="File">
            <MenuItem Header="New"></MenuItem>
            <MenuItem Header="Open"></MenuItem>
            <MenuItem Header="Save"></MenuItem>
            <Separator></Separator>
            <MenuItem Header="Exit"></MenuItem>
          </MenuItem>
          <MenuItem Header="Edit">
            <MenuItem Header="Undo"></MenuItem>
            <MenuItem Header="Redo"></MenuItem>
            <Separator>
              <Separator.Template>
                <ControlTemplate>
                  <Border CornerRadius="2" Padding="5" BorderBrush="Black" BorderThickness="1" Background="PaleGoldenrod">
                    <TextBlock FontWeight="Bold">
                      Editing Commands
                    </TextBlock>
                  </Border>
                </ControlTemplate>
              </Separator.Template>
            </Separator>
            <MenuItem Header="Cut"></MenuItem>
            <MenuItem Header="Copy"></MenuItem>
            <MenuItem Header="Paste"></MenuItem>
          </MenuItem>
        </Menu>
       <ListView HorizontalAlignment="Left" Width="239" Margin="0,148,0,45">
        <ListView.View>
         <GridView>
          <GridViewColumn Width="90" Header="Game" />
          <GridViewColumn Width="60" Header="Stakes" />
          <GridViewColumn Width="35" Header="Seats" />
         </GridView>
        </ListView.View>
       </ListView>
       <ListView Margin="239,148,218,45">
         <ListView.View>
            <GridView>
                <GridViewColumn Width="90" Header="Table" />
                <GridViewColumn Width="15" Header="Players" />
                <GridViewColumn Width="60" Header="Buy-in" />
                <GridViewColumn Width="50" Header="Speed" />
                <GridViewColumn Width="25" Header="H/Hr" />
                <GridViewColumn Width="35" Header="Avg Pot" />
               <GridViewColumn/>
            </GridView>
         </ListView.View>
       </ListView>
       <ListView Margin="546,148,0,45">
         <ListView.View>
            <GridView>
               <GridViewColumn Width="90" Header="Player" />
               <GridViewColumn Width="60" Header="City" />
               <GridViewColumn Width="35" Header="Chips" />
            </GridView>
         </ListView.View>
       </ListView>
       <TextBlock x:Name="LobbyServerLabel" HorizontalAlignment="Left" VerticalAlignment="Bottom" TextWrapping="Wrap" Text="Lobby Server - not connected"/>
       <TextBlock x:Name="GameServerLabel" HorizontalAlignment="Center" VerticalAlignment="Bottom" TextWrapping="Wrap"><Run Text="Game Server - not connected"/></TextBlock>
       <Label x:Name="SkinName1" Margin="8,54,0,0" VerticalAlignment="Top" Content="Attack" FontSize="36" Foreground="#FFD23C32" HorizontalAlignment="Left" FontFamily="Georgia" FontWeight="Bold"/>
       <Label x:Name="SkinName2" Margin="182.405,54,459,0" VerticalAlignment="Top" Content="Poker" FontSize="36" Foreground="#FFD23C32" FontFamily="Georgia" FontWeight="Bold"/>
       <Image VerticalAlignment="Top" Width="41.81" Height="51.519" Source="Spade1.png" Stretch="Fill" Margin="136.595,53.384,585.595,0"/>
   </Grid>
</Window>

我曾尝试移动菜单定义，但这无济于事。有人可以解释一下我如何在 Expression Blend 3 中指定或使用 C# 代码使菜单的背景颜色仅适用于菜单而不适用于其他任何东西吗？

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1 回答 1

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Pretty easy to solve. In Blend 3. under the Layout tab, there is a horizontal alignment and vertical alignment property. Both of these were set to stretch. Have no idea how they got that way. But, in any case they should be set to Left and Top respectively. That puts the menu in the top left hand corner and solves the problem of the menu trying to take control of the background color of the entire window.

于 2013-03-19T16:43:53.573 回答