C#枚举桌面窗口并将桌面设为父窗口？

Question

问题：
我想将我的winform的父窗口设为桌面窗口“WorkerW”，于是我用EnumWindows和EnumWindowsProc来枚举桌面窗口，用FindWindow和FindWindowEx来查找真正的WorkerW句柄，然而我用Spy++发现我的Winform没有成为WorkerW的子窗口，搜了好久也没有找到问题所在，现在贴上代码，请大神帮忙看看，多谢啦！
代码：

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Runtime.InteropServices;

namespace MyExCSForm
{
    public partial class Form1 : Form
    {
        private delegate bool EnumWindowsProc(IntPtr hWnd, IntPtr lParam);

        [DllImport("user32.dll")]
        private static extern bool EnumWindows(EnumWindowsProc hWnd, IntPtr lParam);

        [DllImport("user32.dll")]
        private static extern IntPtr FindWindow(string lpszClass, string lpszWindow);

        [DllImport("user32.dll")]
        private static extern IntPtr FindWindowEx(IntPtr hWndParent, IntPtr hWndChildAfter, string lpszClass, string lpszWindow);

        [DllImport("user32.dll")]
        private static extern IntPtr SetParent(IntPtr hWndChild, IntPtr hWndNewParent);        

        private bool SetMyDesktop(IntPtr hWnd,IntPtr lParam)
        {
            if (hWnd == FindWindow("WorkerW", null))
            {
                if (FindWindowEx(hWnd, IntPtr.Zero, "SHELLDLL_DefView", null) != IntPtr.Zero)
                {
                    SetParent(this.Handle, hWnd);
                    return false;
                } else
                {
                    return true;
                }                
            } else
            {
                return true;
            }
        }

        public Form1()
        {
            InitializeComponent();
            
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            EnumWindowsProc myEnumWinPro = new EnumWindowsProc(SetMyDesktop);
            EnumWindows(myEnumWinPro, IntPtr.Zero);
        }
    }
}

Answer 1

• SHELLDLL_DefView是explorer.exe进程的一个窗口

• 真正的桌面窗口是#32769，GetDesktopWindow可以获取其句柄

• SetParent(this.Handle, IntPtr.Zero)即可设置Parent为桌面窗口

• 事实上非WS_CHILD窗口的Parent默认都是桌面窗口