WPF鼠标按下事件无坐标

I am using WPF mouse down event on a control. I want to get the X,Y coordinates but I am getting an error:

我在控件上使用WPF鼠标按下事件。我想得到X，Y坐标，但我收到一个错误：

private void button_MouseDown(object sender, MouseButtonEventArgs e)
{
      double x = e.X, double y = e.Y;
}

I could not access the coordinates. I wonder why. Can Someone help? If mouse down is unable to get the coordinates, is there other way I can get the coordinate of the cursor when click?

我无法访问坐标。我想知道为什么。有人可以帮忙吗？如果鼠标按下无法获取坐标，有没有其他方法可以在点击时获取光标的坐标？

2 个解决方案

#1

You need to use the GetPosition method to retrieve the point.

您需要使用GetPosition方法来检索点。

private void button_MouseDown(object sender, MouseButtonEventArgs e)
{
    Point p = e.GetPosition(this);
    double x = p.X;
    double y = p.Y;
}

#2

Try like

试试吧

C#
private void button_MouseDown(object sender, MouseButtonEventArgs e)
    {
        double x = e.GetPosition("Name of your element" as IInputElement).X;
    }