wprintw
wprintw(my_win.x_win, "[%s : %s]\n", string, strerror(errno));
wprintw(my_win.x_win, "[%s]\n", string);
extern int wprintw(WINDOW *, const char *, ...);
extern int wprintw(WINDOW *, char *, ...);
extern int wprintw(WINDOW *, char *, ...);