WPF图像控制上的鼠标处理

Question

我很菜鸟WPF。我创建一个WPF应用程序，使用EmguCV库image Processing。我发现我不能ImageBox在WPF. 所以我用NamedWindow来显示image然后我决定用Image Control来显示window. 我想提请rectangle在那image，但矩形在其他地方没有画出。所以谁能告诉我代码中有什么问题。

基本上我想获取该图像的投资回报率。

编辑：- 我把Canvas里面grid放了Image Control里面Canvas

**我的 XAML 代码 **

<Grid Margin="0,0,2,-1">

    <Grid.ColumnDefinitions>

        <ColumnDefinition Width="138*"/>

        <ColumnDefinition Width="139*"/>

    </Grid.ColumnDefinitions>

    <Button x:Name="button" Content="Convert" Margin="139.053,432.066,0,0" Click="button_Click" Height="27.934" VerticalAlignment="Top" HorizontalAlignment="Left" Width="113.947" Grid.Column="1"/>

    <Button x:Name="button1" Content="Load Palette" Margin="308,432.066,0,0" Click="button1_Click_1" Height="27.934" VerticalAlignment="Top" HorizontalAlignment="Left" Width="75" Grid.ColumnSpan="2"/>

    <Button x:Name="button2" Content="Load Gray Image" Margin="48,432.066,0,0" Click="button2_Click" Height="27.934" VerticalAlignment="Top" HorizontalAlignment="Left" Width="104"/>

    <Canvas x:Name="MyCanvas" Margin="81,86.5,27.245,120.5" Grid.Column="1">

        <Image x:Name="image3" Height="263" Width="238"/>

    </Canvas>

    <Image x:Name="image1" HorizontalAlignment="Left" Height="263" Margin="10,86.5,0,0" VerticalAlignment="Top" Width="255.5"/>

    <Image x:Name="image2" Grid.ColumnSpan="2" HorizontalAlignment="Left" Height="393" Margin="308,10,0,0" VerticalAlignment="Top" Width="75"/>

</Grid>

我使用Event Handler过Canvas，但它不显示rectangle

提前致谢

Answer 1

我得到了答案，实际上我还没有添加事件处理程序，image3 Image Control这就是它不显示输出的原因。<Canvas x:Name="MyCanvas" Margin="81,86.5,27.245,120.5" Grid.Column="1">&nbsp; &nbsp; <Image x:Name="image3" Height="263" Width="238" MouseLeftButtonDown="image3_MouseLeftButtonDown" MouseLeftButtonUp="image3_MouseLeftButtonUp" MouseMove="image3_MouseMove"/></Canvas>