InkCanvas 上的 MouseLeftButtonDown 事件
嗨，我不知道为什么它不起作用。看来我无法在 InkCanvas 上使用此事件。
XAML
<Window x:Class="PolyLine.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="MainWindow" Height="350" Width="525">
<StackPanel >
<Button Name="Button1">Clear</Button>
<InkCanvas x:Name="MC" MouseLeftButtonDown="MC_MouseLeftButtonDown" MouseRightButtonDown="MC_MouseRightButtonDown" MouseMove="MC_MouseMove" Background="White" Height="300" Width="497" ></InkCanvas>
</StackPanel>
代码隐藏
private void MC_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
{
polylinePoints.Add(e.GetPosition(MC));
}
Hi I have no ide why it isn't work. It looks like I can't use this event on InkCanvas.
XAML
<Window x:Class="PolyLine.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="MainWindow" Height="350" Width="525">
<StackPanel >
<Button Name="Button1">Clear</Button>
<InkCanvas x:Name="MC" MouseLeftButtonDown="MC_MouseLeftButtonDown" MouseRightButtonDown="MC_MouseRightButtonDown" MouseMove="MC_MouseMove" Background="White" Height="300" Width="497" ></InkCanvas>
</StackPanel>
Code Behind
private void MC_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
{
polylinePoints.Add(e.GetPosition(MC));
}
如果你对这篇内容有疑问，欢迎到本站社区发帖提问 参与讨论，获取更多帮助，或者扫码二维码加入 Web 技术交流群。
绑定邮箱获取回复消息
由于您还没有绑定你的真实邮箱，如果其他用户或者作者回复了您的评论，将不能在第一时间通知您！
发布评论
评论（1）
显然，InkCanvas 在内部处理 MouseLeftButtonDown 事件以启动墨迹笔画的绘制。您可以改为使用 PreviewMouseLeftButtonDown 事件，但您应该小心你做什么。在 InkCanvas 中，用户通常期望在按下鼠标左键时开始绘制笔划。
Apparently the InkCanvas handles the MouseLeftButtonDown event internally to initiate the drawing of an ink stroke. You could instead use the PreviewMouseLeftButtonDown event, but you should be careful with what you do. In an InkCanvas a user would usually expect to start drawing a stroke when he presses the left mouse button.