将窗口停靠在另一个窗口内

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

private Process pDocked;
private IntPtr hWndOriginalParent;
private IntPtr hWndDocked;

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

[DllImport(\"user32.dll\", SetLastError = true)]
public static extern bool MoveWindow(IntPtr hWnd, int X, int Y, int nWidth, int nHeight, bool bRepaint);

private void dockIt()
{
    if (hWndDocked != IntPtr.Zero) //don\'t do anything if there\'s already a window docked.
        return;
    hWndParent = IntPtr.Zero;

    pDocked = Process.Start(@\"notepad\");
    while (hWndDocked == IntPtr.Zero)
    {
        pDocked.WaitForInputIdle(1000); //wait for the window to be ready for input;
        pDocked.Refresh();              //update process info
        if (pDocked.HasExited)
        {
            return; //abort if the process finished before we got a handle.
        }
        hWndDocked = pDocked.MainWindowHandle;  //cache the window handle
    }
    //Windows API call to change the parent of the target window.
    //It returns the hWnd of the window\'s parent prior to this call.
    hWndOriginalParent = SetParent(hWndDocked, Panel1.Handle);

    //Wire up the event to keep the window sized to match the control
    Panel1.SizeChanged += new EventHandler(Panel1_Resize);
    //Perform an initial call to set the size.
    Panel1_Resize(new Object(), new EventArgs());
}

private void undockIt()
{
    //Restores the application to it\'s original parent.
    SetParent(hWndDocked, hWndOriginalParent);
}

private void Panel1_Resize(object sender, EventArgs e)
{
    //Change the docked windows size to match its parent\'s size. 
    MoveWindow(hWndDocked, 0, 0, Panel1.Width, Panel1.Height, true);
}

            ProcessStartInfo info = new ProcessStartInfo();
            info.FileName = \"xxxxxxxxxxxx.exe\";
            info.Arguments = \"yyyyyyyyyy\";
            info.UseShellExecute = true;
            info.CreateNoWindow = true;
            info.WindowStyle = ProcessWindowStyle.Maximized;
            info.RedirectStandardInput = false;
            info.RedirectStandardOutput = false;
            info.RedirectStandardError = false;

            System.Diagnostics.Process p = System.Diagnostics.Process.Start(info); 

            p.WaitForInputIdle();
            Thread.Sleep(3000);

            Process[] p1 ;
        if(p.MainWindowHandle == null)
        {
            List<String> arrString = new List<String>();
            foreach (Process p1 in Process.GetProcesses())
            {
                // Console.WriteLine(p1.MainWindowHandle);
                arrString.Add(Convert.ToString(p1.ProcessName));
            }
            p1 = Process.GetProcessesByName(\"xxxxxxxxxxxx\");
            //p.WaitForInputIdle();
            Thread.Sleep(5000);
           SetParent(p1[0].MainWindowHandle, this.panel2.Handle);
        }
         else
        {
           SetParent(p.MainWindowHandle, this.panel2.Handle);
        }

    //This is my docking window
    private System.Diagnostics.Process notepad;
    private void windowDockTest()
    {
        /*
         * Docking notepad to panel2 of the splitcontainer
         */

        //if panel2 moves or is resized, call the docking function
        spcScript.Panel2.Move += new EventHandler(Panel2_Resize);
        spcScript.Panel2.SizeChanged += new EventHandler(Panel2_Resize);

        //Call the docking function if main form is moved
        this.LocationChanged += new EventHandler(Panel2_Resize);

        //Start the notepad process
        notepad = new System.Diagnostics.Process();
        notepad.StartInfo.FileName = \"notepad\";
        notepad.Start();

        //Wait a second for notpad to fully load
        notepad.WaitForInputIdle(1000);

        //Dock it
        Panel2_Resize(new Object(), new EventArgs());
    }

    void Panel2_Resize(object sender, EventArgs e)
    {
        //Get the screen location of panel2
        Rectangle r = spcScript.Panel2.RectangleToScreen(spcScript.Panel2.ClientRectangle);

        //Dock it
        redock(notepad.MainWindowHandle, r.X, r.Y, r.Width, r.Height);
    }

    [DllImport(\"user32.dll\")]
    public static extern IntPtr SetWindowPos(IntPtr hWnd, IntPtr hWndInsertAfter, int x, int Y, int cx, int cy, int wFlags);
    public static void redock(IntPtr handle, int x, int y, int width, int height)
    {
        IntPtr HWND_TOPMOST = new IntPtr(-1);
        const short SWP_NOACTIVATE = 0x0010;

        SetWindowPos(handle,HWND_TOPMOST, x, y, width, height,SWP_NOACTIVATE);
    }