WNDCLASSEX   wc;
      
      wc.cbSize                = sizeof( WNDCLASSEX );
      wc.style                 = 0;
      wc.lpfnWndProc           = sys.main_wndproc; 
      wc.cbClsExtra            = 0;
      wc.cbWndExtra            = 0;
      wc.hInstance             = wstate.hInstance;
      wc.hIcon                 = NULL;
      wc.hCursor               = LoadCursor( NULL, IDC_ARROW );
      wc.hbrBackground         = NULL;
      wc.lpszMenuName          = NULL;
      wc.lpszClassName         = "wndclass";
      
      if( !RegisterClassEx( &wc ) )
      {
          MessageBox( NULL, "Could Not Register Window Class!", "Error", MB_ICONEXCLAMATION | MB_OK );
          return FALSE;
      }