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);         }     } }