curs_set

static VALUE
curses_curs_set(VALUE obj, VALUE visibility)
{
#ifdef HAVE_CURS_SET
    int n;
    curses_stdscr();
    return (n = curs_set(NUM2INT(visibility)) != ERR) ? INT2FIX(n) : Qnil;
#else
    return Qnil;
#endif
}