mvwgetch
mvwgetch(WINDOW *win, int y, int x)
#define mvwgetch(w,y,x) (wmove(w,y,x)?ERR:wgetch(w))
#undef mvwgetch
mvwgetch(w, y, x)
#define mvwgetch(w, y, x) \
#undef mvwgetch
mvwgetch(WINDOW *w, int y, int x)
#define mvwgetch(win, y, x) VOID(wmove(win, y, x) == ERR?ERR:wgetch(win))