typedef long (_stdcall * WndProcCast) (HWND, unsigned int, unsigned int, long);
# define CASTWNDPROC (WndProcCast)
# elif defined(__WIN16__)
typedef long (_stdcall * WndProcCast) (HWND, unsigned int, unsigned int, long);
# define CASTWNDPROC (WndProcCast)
# elif defined(__WIN16__)