using System; 
using System.Windows.Forms; 
using System.Runtime.InteropServices; 

class Test : Form 
{ 
  const int MF_BYPOSITION = 0x0400; 
  const int MF_REMOVE     = 0x1000; 

  [DllImport("user32.dll",EntryPoint="GetSystemMenu")] 
  extern static IntPtr GetSystemMenu(IntPtr hWnd, IntPtr bRevert); 

  [DllImport("user32.dll",EntryPoint="RemoveMenu")] 
  extern static int RemoveMenu(IntPtr hMenu, int nPos, int flags); 

  Test() 
  { 
    Text            =  "不能移动和改变大小的窗口"; 
    FormBorderStyle = FormBorderStyle.FixedSingle; 
    MaximizeBox     = false; 
    MinimizeBox     = false; 
    RemoveMenu(GetSystemMenu(Handle,IntPtr.Zero),1,MF_BYPOSITION|MF_REMOVE); 
  } 

  static void Main() 
  { 
    Application.Run(new Test()); 
  } 
}