我可以在 WPF 中明确显示鼠标单击事件的工具提示吗? [英] Can I explicity show tooltip on Mouse Click event in WPF?

问题描述

当鼠标悬停在帮助图像上时，我会显示工具提示.

I am showing a Tool Tip when Mouse hovers on Help image.

xaml 如下:

 <Image 
     x:Name="HelpImage"
     Width="16"
     Height="16"
     Grid.Row="1"
     Source="..\Images\ToolBar\Help.png"
     Grid.Column="2">
     <Image.ToolTip>
         <Grid
             Background="LightGreen">
             <Grid.RowDefinitions>
                 <RowDefinition />
                 <RowDefinition />
             </Grid.RowDefinitions>
             <StackPanel
                 Background="LightGreen"
                 Height="25"
                 Width="300"
                 Orientation="Horizontal"
                 HorizontalAlignment="Left"
                 VerticalAlignment="Top">
                 <Image
                     VerticalAlignment="Stretch"
                     HorizontalAlignment="Stretch"
                     Width="24"
                     Height="24"
                     Source="/Images/Test.png"
                     Name="image1" />
                 <TextBlock
                     FontFamily="Aharoni"
                     Margin="5"
                     FontSize="20"
                     FontWeight="Bold"
                     Foreground="Black"
                     TextWrapping="Wrap"
                     VerticalAlignment="Top"
                     Height="Auto"
                     HorizontalAlignment="Right"
                     Width="Auto">
                       <Run
                          FontFamily="Calibri"
                          FontSize="14"
                          Foreground="DarkRed"
                          FontWeight="Bold"
                          Text="Bandwidth Base Value" />
                 </TextBlock>
             </StackPanel>
             <TextBlock
                 Grid.Row="1"
                 Background="LightGreen">
                 This is Help  content</TextBlock>
         </Grid>
     </Image.ToolTip>
 </Image>

当用户鼠标悬停在图像控件上时，它会显示工具提示.我可以在用户点击图片时明确显示工具提示吗?

It shows the Tool Tip when user mouse hovers on the image control. Can I explicity show ToolTip when user clicks on the image ?

请帮忙！！

推荐答案

您可以通过设置 ToolTip.IsOpen 为真.您可以通过在设置 ToolTip 属性时显式构造一个对象来获取对 ToolTip 对象的引用.而不是

You can force the tool tip to open by setting ToolTip.IsOpen to true. You can get a reference to the ToolTip object by explicitly constructing one when setting the ToolTip property. Instead of

<Image.ToolTip>
    <Grid>
    ...
    </Grid>
</Image.ToolTip>

写

<Image.ToolTip>
    <ToolTip>
        <Grid>
        ...
        </Grid>
    </ToolTip>
</Image.ToolTip>

然后在您的 MouseUp 处理程序中执行以下操作:

And then in your MouseUp handler do something like:

((ToolTip)((FrameworkElement)sender).ToolTip).IsOpen = true;

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