我想添加选项以在图像上绘制矩形。但这不是问题。 为了使它工作,我需要在WPF中使用Image Control的MouseDown,MouseUp和MouseLeave事件。
<DockPanel Name="dockPanel1" Grid.ColumnSpan="2" HorizontalAlignment="Center" VerticalAlignment="Center" Margin="15">
<GroupBox Header="WebCam" Name="groupBox1" VerticalAlignment="Top" HorizontalAlignment="Left">
<Grid>
<Image HorizontalAlignment="Left" Margin="0" Name="pictureBoxMain" Stretch="Fill" VerticalAlignment="Top" MinHeight="240" MinWidth="320" StretchDirection="DownOnly" MaxWidth="960" MaxHeight="1200" MouseDown="pictureBoxMain_MouseDown" MouseUp="pictureBoxMain_MouseUp" MouseLeave="pictureBoxMain_MouseLeave" Panel.ZIndex="50" />
</Grid>
</GroupBox>
<StackPanel HorizontalAlignment="Right" Name="stackPanel2" VerticalAlignment="Top" DockPanel.Dock="Right" Margin="15,0,0,0">
<GroupBox Header="Controls" Name="groupBox2">
<StackPanel Name="stackPanel1">
<Button Content="Start" Height="23" Name="buttonStartStop" Width="120" Margin="0" Click="buttonStartStop_Click" />
<Button Content="Video Properties" Height="23" Name="buttonVideoProperties" Width="120" Margin="0" Click="buttonVideoProperties_Click" />
<Button Content="WebCam Settings" Height="23" Name="buttonWebCamSettings" Width="120" Margin="0" Click="buttonWebCamSettings_Click" />
</StackPanel>
</GroupBox>
<GroupBox Header="Motion Data" Name="groupBox3">
<StackPanel>
<Label Content="Strength: 0" x:Name="labelMotionStrength" />
<Label Content="Count: 0" x:Name="timesWasMotionCounter" />
</StackPanel>
</GroupBox>
</StackPanel>
</DockPanel>
我在谈论“pictureBoxMain”的事件。 为什么这些事件从未开火我点击我的图像就像疯了一样,但仍然没有。 我应该怎么做才能使这些活动有效?
答案 0 :(得分:1)
您是否尝试过捕捉PreviewMouseDown?
To capture the same as MouseDown you need to use PreviewMouseDown event which is a tunneling event.
答案 1 :(得分:1)
我发现了错误。 出于某种原因,我的图片框大小为0,0。 我伸展它现在它起作用了。
答案 2 :(得分:0)
在事件处理程序工作之前,您需要将Image的Source属性设置为图像文件或绑定:
<Image HorizontalAlignment="Left" Margin="0" Name="pictureBoxMain" Stretch="Fill" VerticalAlignment="Top" MinHeight="240" MinWidth="320" StretchDirection="DownOnly" MaxWidth="960" MaxHeight="1200" MouseDown="pictureBoxMain_MouseDown" MouseUp="pictureBoxMain_MouseUp" MouseLeave="pictureBoxMain_MouseLeave" Source="test_image.png" Panel.ZIndex="50" />