C++ Overridden method not getting called

Question

Shape.h

namespace Graphics {
    class Shape {
    public:
        virtual void Render(Point point) {};
    };
}

Rect.h

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Answer 1

The problem is that in your vector you are storing copies of Shape objects, and copying a Shape object does not copy the data or functionality of its derived classes - you're slicing the polymorphism away.

Manage the objects using new and delete, and arrange for your vector to store pointers to them.

Answer 2

You could try boost::ptr_vector

http://www.boost.org/doc/libs/1_40_0/libs/ptr_container/doc/ptr_container.html