如何获取子窗口的所有标题？

using System;
using System.Diagnostics;
using System.Runtime.InteropServices;
using System.Text;

class Program
{
    [DllImport("user32.dll", SetLastError = true)]
    static extern IntPtr FindWindowEx(IntPtr hwndParent, IntPtr hwndChildAfter, string lpszClass, string lpszWindow);

    [DllImport("user32.dll", CharSet = CharSet.Auto)]
    static extern int GetWindowText(IntPtr hWnd, StringBuilder text, int count);

    static void Main()
    {
        Process process = Process.GetProcessesByName("TargetProcessName")[0]; // 替换为目标进程名
        IntPtr mainWindowHandle = process.MainWindowHandle;

        List<string> windowTitles = new List<string>();
        EnumChildWindows(mainWindowHandle, (hWnd, lParam) =>
        {
            StringBuilder title = new StringBuilder(256);
            GetWindowText(hWnd, title, title.Capacity);
            windowTitles.Add(title.ToString());
            return true;
        }, IntPtr.Zero);

        foreach (var title in windowTitles)
        {
            Console.WriteLine(title);
        }
    }

    private delegate bool EnumWindowsProc(IntPtr hWnd, IntPtr lParam);

    [DllImport("user32.dll")]
    [return: MarshalAs(UnmanagedType.Bool)]
    static extern bool EnumChildWindows(IntPtr hwndParent, EnumWindowsProc lpEnumFunc, IntPtr lParam);
}