[Swig-user] Ruby director question

[何平 <td...@ho...>]

Hi, I'm new here and this is my 1st post, so no hard feelings if my question is really dumb.

SO my *.i file looks like this
  %module(directors="1") mymod
  %{
   #include "rubywrapper_swig.h"
  %}
  %feature("nodirector");
  %feature("director") MyWorld::fun;

  class MyWorld{
  public:
   MyWorld();
   virtual ~MyWorld();
   virtual void fun();
  };
  void myLoop(MyWorld* world);
for testing purpose, no real loops in myLoop:
  void MyWorld::fun() {}
  void myLoop(MyWorld* world) {
   world->fun();
  }
and testing script is pretty simple
  require 'mymod'
  include Mymod
  class World < MyWorld
   def mainLogical
    puts 'testing...'
   end
  end
  world = World.new
  mainLoop(world)
So, I expect a ''testing...' print rather than nothing, but I got nothing...
I'm using ruby 1.9.2, swigwin 2.0.2
please tell me what's wrong?

Thanks