摘要：
使用系统；使用系统。绘画使用System.Runtime。InteropServices；使用System.Windows。形式；namespaceSetDeskFrm｛publicpartialclassForm1：表单｛IntPtrhDesktop；publicconstantGW_CHILD=5；publicForm1（）｛Ini
using System;
using System.Drawing;
using System.Runtime.InteropServices;
using System.Windows.Forms;
namespace SetDeskFrm
{
public partial class Form1 : Form
{
IntPtr hDesktop;
public const int GW_CHILD = 5;
public Form1() {
InitializeComponent();
this.hDesktop = GetDesktopHandle(DesktopLayer.Progman);
EmbedDesktop(this, this.Handle, this.hDesktop);
}
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
}
}
方法2（在某些系统版本不成功，WIN7 、XP）：
[DllImport("user32.dll", SetLastError = true)]
static extern int SetWindowLong(IntPtr hWnd, int nIndex, IntPtr dwNewLong);
[DllImport("user32.dll", SetLastError = true)]
static extern IntPtr FindWindow(string lpWindowClass, string lpWindowName);
[DllImport("user32.dll", SetLastError = true)]
static extern IntPtr FindWindowEx(IntPtr parentHandle, IntPtr childAfter, string className, string windowTitle);
const int GWL_HWNDPARENT = -8;
[DllImport("user32.dll")]
static extern IntPtr SetParent(IntPtr hWndChild, IntPtr hWndNewParent);
private void Button_Click(object sender, RoutedEventArgs e)
{
var handle = new WindowInteropHelper(Application.Current.MainWindow).Handle;
IntPtr hprog = FindWindowEx(
FindWindowEx(
FindWindow("Progman", "Program Manager"),
IntPtr.Zero, "SHELLDLL_DefView", ""
),
IntPtr.Zero, "SysListView32", "FolderView"
);
SetWindowLong(handle, GWL_HWNDPARENT, hprog);
IntPtr hWnd = new WindowInteropHelper(Application.Current.MainWindow).Handle;
IntPtr hWndProgMan = FindWindow("Progman", "Program Manager");
SetParent(hWnd, hWndProgMan);
}
方式3（大同小异）：
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace SetDeskFrm
{
internal class User32
{
public const int SE_SHUTDOWN_PRIVILEGE = 0x13;
[DllImport("user32.dll")]
public static extern IntPtr FindWindow(string lpClassName, string lpWindowName);
[DllImport("user32.dll")]
public static extern IntPtr SetParent(IntPtr hWndChild, IntPtr hWndNewParent);
[DllImport("user32.dll")]
public static extern bool SetWindowPos(IntPtr hWnd, int hWndInsertAfter, int X,
int
Y,
int
cx,
int
cy,
uint
uFlags);
}
public partial class Form2 : Form
{
public Form2()
{
InitializeComponent();
try
{
if (Environment.OSVersion.Version.Major == 6)
{
base.SendToBack();
IntPtr hWndNewParent = User32.FindWindow("Progman", null);
User32.SetParent(base.Handle, hWndNewParent);
}
else
{
User32.SetWindowPos(
base.Handle, 1, 0, 0, 0, 0, User32.SE_SHUTDOWN_PRIVILEGE);
}
}
catch (ApplicationException ex)
{
MessageBox.Show(this, ex.Message, "Pin to Desktop");
}
}
private void MainForm_Activated(object sender, EventArgs e)
{
if (Environment.OSVersion.Version.Major == 6)
{
User32.SetWindowPos( base.Handle, 1 , 0 , 0 , 0 , 0 , User32.SE_SHUTDOWN_PRIVILEGE);
}
}
private void MainForm_Paint(object sender, PaintEventArgs e)
{
if
(Environment.OSVersion.Version.Major == 6 )
{
User32.SetWindowPos( base.Handle, 1 , 0 , 0 , 0, 0, User32.SE_SHUTDOWN_PRIVILEGE);
}
}
private void Form2_Load(object sender, EventArgs e)
{
}
}
}
参考：https://stackoverflow.com/questions/365094/window-on-desktop