mvwchgat
return mvwchgat(stdscr, y, x, n, attr, color, opts);
return mvwchgat(win, win->cury, win->curx, n, attr, color, opts);
int mvwchgat(WINDOW *, int, int, int, attr_t, short, const void *);
report_return(mvwchgat(win, y, x, n, attr, colour, NULL));