#define USING_SCREEN(s,func,data) use_screen(s, (NCURSES_SCREEN_CB) func, data)
#define WANT_USE_SCREEN() extern void _nc_want_use_screen(void)
#else
#define USING_SCREEN(s,func,data) use_screen(s, (NCURSES_SCREEN_CB) func, data)
#define WANT_USE_SCREEN() extern void _nc_want_use_screen(void)
#else