CreateEx

virtual BOOL CreateEx(
   DWORD dwExStyle,
   LPCTSTR lpszClassName,
   LPCTSTR lpszWindowName,
   DWORD dwStyle,
   int x,
   int y,
   int nWidth,
   int nHeight,
   HWND hWndParent,
   HMENU nIDorHMenu,
   LPVOID lpParam = NULL 
);