#region 设置桌面为父窗口

IntPtr hDesktop;

public const int GW_CHILD = 5;

public IntPtr GetDesktopHandle(DesktopLayer layer)

{

//hWnd = new HandleRef();

HandleRef hWnd;

IntPtr hDesktop = new IntPtr();

switch (layer)

{

case DesktopLayer.Progman:

hDesktop = Win32Support.FindWindow("Progman", null);//第一层桌面

break;

case DesktopLayer.SHELLDLL:

hDesktop = Win32Support.FindWindow("Progman", null);//第一层桌面

hWnd = new HandleRef(this, hDesktop);

hDesktop = Win32Support.GetWindow(hWnd, GW_CHILD);//第2层桌面

break;

case DesktopLayer.FolderView:

hDesktop = Win32Support.FindWindow("Progman", null);//第一层桌面

hWnd = new HandleRef(this, hDesktop);

hDesktop = Win32Support.GetWindow(hWnd, GW_CHILD);//第2层桌面

hWnd = new HandleRef(this, hDesktop);

hDesktop = Win32Support.GetWindow(hWnd, GW_CHILD);//第3层桌面

break;

}

return hDesktop;

}

public void EmbedDesktop(Object embeddedWindow, IntPtr childWindow, IntPtr parentWindow)

{

Form window = (Form)embeddedWindow;

HandleRef HWND_BOTTOM = new HandleRef(embeddedWindow, new IntPtr(1));

const int SWP_FRAMECHANGED = 0x0020;//发送窗口大小改变消息

Win32Support.SetParent(childWindow, parentWindow);

Win32Support.SetWindowPos(new HandleRef(window, childWindow), HWND_BOTTOM, 300, 300, window.Width, window.Height, SWP_FRAMECHANGED);

}

private void button1_Click(object sender, EventArgs e)

{

}

class Win32Support

{

[DllImport("user32.dll", CharSet = CharSet.Auto)]

public static extern IntPtr FindWindow(string className, string windowName);

[DllImport("user32.dll", CharSet = CharSet.Auto, ExactSpelling = true)]

public static extern IntPtr GetWindow(HandleRef hWnd, int nCmd);

[DllImport("user32.dll")]

public static extern IntPtr SetParent(IntPtr child, IntPtr parent);

[DllImport("user32.dll", EntryPoint = "GetDCEx", CharSet = CharSet.Auto, ExactSpelling = true)]

public static extern IntPtr GetDCEx(IntPtr hWnd, IntPtr hrgnClip, int flags);

[DllImport("user32.dll", CharSet = CharSet.Auto, ExactSpelling = true)]

public static extern bool SetWindowPos(HandleRef hWnd, HandleRef hWndInsertAfter, int x, int y, int cx, int cy, int flags);

[DllImport("user32.dll")]

public static extern int ReleaseDC(IntPtr window, IntPtr handle);

}

public enum DesktopLayer

{

Progman = 0,

SHELLDLL = 1,

FolderView = 2

}

#endregion

public Form1()
{
InitializeComponent();
this.hDesktop = GetDesktopHandle(DesktopLayer.Progman);
EmbedDesktop(this, this.Handle, this.hDesktop);
}