winform show, hide the taskbar and Start menu

　　　　　　private const int SW_HIDE = 0; // hide
　　　　　　private const int SW_RESTORE = 9; // display

　　　　　///  <Summary> 
        /// Get the form handler function
         ///  </ Summary> 
        ///  <param name = "the lpClassName"> window class name </ param> 
        ///  <param name = "lpWindowName" > window title name </ param> 
        ///  <returns> returns a handle </ returns> 
        [the DllImport ( " User32.dll " , the EntryPoint = " the FindWindow " , the SetLastError = to true )]
         public  static  extern IntPtr the FindWindow ( String the lpClassName, String lpWindowName);

        ///  <the Summary> 
        /// taskbar && Start Menu
         ///  </ the Summary> 
        public  static  void ShowTask () 
        { 
            // display the taskbar 
            ShowWindow (( int ) FindWindow ( " Shell_TrayWnd " , null ), SW_RESTORE) ;
             // display system start menu bar button 
            ShowWindow (( int ) FindWindow ( " the button " , null ), SW_RESTORE); 
        } 

        ///  <the Summary> 
        /// hide the taskbar && start menu
         ///  </ the Summary>
        public  static  void HideTask () 
        { 
            // hide the taskbar 
            ShowWindow (( int ) FindWindow ( " Shell_TrayWnd " , null ), SW_HIDE);
             // hide the menu bar button start system 
            ShowWindow (( int ) FindWindow ( " the Button " , null ) , SW_HIDE); 
        }