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copy template pointers

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hi i have a std::vector, which gets loaded with pointers on GUIComponents:
  class Container : public GUIComponent, 
   {
    protected:
     std::vector<GUIComponent*> children;
    public:
     template<class T> unsigned int add(T *child)
      {
       T *copy = new T(*child);
       unsigned int ret = children.size();
       children.push_back( (GUIComponent*)copy );
       return ret;
      }
in the destructor, i delete that pointers. But if i want to add the container into another container, i need to copy the Components children''s values are pointing, since those might be deleted by the destructor of the original container. how do i copy data if i don''t know the datatype?

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I'd do it by adding a virtual function named clone.

GUIComponent* Button::clone() const { return new Button(*this); }
GUIComponent* Textbox::clone() const { return new Textbox(*this); }

etc.

[edited by - Beer Hunter on December 14, 2003 4:21:14 AM]

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