如何从工具提示WPF中获取投影？

using System.Windows;
using System.Windows.Controls;
using System.Windows.Media;

public partial class MainWindow : Window
{
    public MainWindow()
    {
        InitializeComponent();

        // 创建一个按钮并添加工具提示
        Button myButton = new Button();
        myButton.Content = "Hover over me!";
        ToolTip myToolTip = new ToolTip();
        myToolTip.Content = "This is a tooltip.";
        myButton.ToolTip = myToolTip;

        // 订阅工具提示的Opened事件
        myToolTip.Opened += MyToolTip_Opened;

        // 将按钮添加到窗口
        this.Content = myButton;
    }

    private void MyToolTip_Opened(object sender, RoutedEventArgs e)
    {
        ToolTip tooltip = sender as ToolTip;
        if (tooltip != null)
        {
            // 获取工具提示的位置和尺寸
            Point tooltipPosition = tooltip.TranslatePoint(new Point(0, 0), this);
            Size tooltipSize = new Size(tooltip.ActualWidth, tooltip.ActualHeight);

            // 输出投影信息
            MessageBox.Show($"Tooltip Position: ({tooltipPosition.X}, {tooltipPosition.Y}), Size: ({tooltipSize.Width}, {tooltipSize.Height})");
        }
    }
}