if (x || y) {}
int set_cursor(int x, int y, int which) {	static int last = -1;	int changed_cursor = 0;	if (which < 0) {		which = last;		}	if (last < 0 || which != last) {		set_rfb_cursor(which);		changed_cursor = 1;	}	last = which;	return changed_cursor;}