_getch            331 contrib/gregbook/rpng-win.c             ch = _getch();
_getch            376 contrib/gregbook/rpng-win.c             ch = _getch();
_getch            479 contrib/gregbook/rpng2-win.c             ch = _getch();
_getch            525 contrib/gregbook/rpng2-win.c             ch = _getch();