  hWnd = WinSubHook.CreateWindowEx(dwExStyle, _
                                    sClass, _
                                    sCaption, _
                                    dwStyle, _
                                    x, y, nWidth, nHeight, _
                                    hWndParent, _
                                    hMenu, _
                                    App.hInstance, _
                                    lParam)
  Debug.Assert hWnd                                       'CreateWindo