如何使用c#获取外部应用程序窗口的鼠标指针下的对象/元素/控件？

using System;
using System.Runtime.InteropServices;

public class ExternalApp
{
    // 导入Windows API函数
    [DllImport("user32.dll")]
    private static extern IntPtr WindowFromPoint(Point point);

    [DllImport("user32.dll")]
    private static extern int GetWindowText(IntPtr hWnd, System.Text.StringBuilder text, int count);

    [DllImport("user32.dll")]
    private static extern int GetClassName(IntPtr hWnd, System.Text.StringBuilder text, int count);

    [DllImport("user32.dll")]
    private static extern IntPtr GetParent(IntPtr hWnd);

    [DllImport("user32.dll")]
    private static extern bool ScreenToClient(IntPtr hWnd, ref Point point);

    // 定义Point结构体
    [StructLayout(LayoutKind.Sequential)]
    public struct Point
    {
        public int X;
        public int Y;
    }

    // 获取鼠标指针下的对象/元素/控件
    public static void GetObjectUnderMouse()
    {
        // 获取鼠标当前位置
        Point mousePoint;
        GetCursorPos(out mousePoint);

        // 获取鼠标所在窗口的句柄
        IntPtr hWnd = WindowFromPoint(mousePoint);

        // 将窗口坐标转换为客户区坐标
        ScreenToClient(hWnd, ref mousePoint);

        // 获取窗口的标题和类名
        StringBuilder windowText = new StringBuilder(256);
        GetWindowText(hWnd, windowText, windowText.Capacity);
        StringBuilder className = new StringBuilder(256);
        GetClassName(hWnd, className, className.Capacity);

        // 获取父窗口的句柄
        IntPtr parentHwnd = GetParent(hWnd);

        // 输出结果
        Console.WriteLine("鼠标下的对象/元素/控件信息：");
        Console.WriteLine("窗口标题： " + windowText.ToString());
        Console.WriteLine("窗口类名： " + className.ToString());
        Console.WriteLine("父窗口句柄： " + parentHwnd.ToString());
    }

    // 获取鼠标当前位置
    [DllImport("user32.dll")]
    private static extern bool GetCursorPos(out Point lpPoint);
}