+static Bool
+WolframAutomata_event(Display * dpy, Window win, void * closure, XEvent * event)
+{
+ return False;
+}
+
+static void
+WolframAutomata_free(Display * dpy, Window win, void * closure)
+{
+ struct state * state = closure;
+ XFreeGC(state->dpy, state->gc);
+ XFreePixmap(state->dpy, state->evolution_history);
+ free(state->current_generation);
+ free(state);
+}
+