Foo having a boost::weak_ptr<Foo> member

As described in the code below: it doesn't seem possible, but I could really use it... Does anyone have any ideas of how to get around this?

Code:

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#include <iostream>

#include "boost/shared_ptr.hpp"

class GUI_Object;

typedef boost::shared_ptr<GUI_Object> gui_object_ptr;
typedef boost::weak_ptr<GUI_Object> weak_gui_object_ptr;

class GUI_Object
{
public:
    GUI_Object() {}

    void Set_Parent(weak_gui_object_ptr p)
    {
        parent = p;
    }
protected:
    weak_gui_object_ptr parent;
};

int main()
{
    GUI_Object g;
    return 0;
}

---

Code:

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Error        1        error C2079: 'GUI_Object::parent' uses undefined class 'boost::weak_ptr<T>'        e:\dev\projects\test\test\main.cpp        20
Error        2        error C2440: '=' : cannot convert from 'weak_gui_object_ptr' to 'int'        e:\dev\projects\test\test\main.cpp        17

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The reason that I am trying to do this is because I only recently added the "parent" member to my GUI_Object class. I was creating GUI_Object-derived objects on the stack, and so the pointers that other objects were holding to these objects (as their "parent") were being invalidated eventually. I thought that this could solve my issue (just means that I have to create a shared_ptr wrapper of each GUI_Object-derived object that will be a parent).

Cheers.

I'd say you have to include <boost/weak_ptr.hpp> as well. It seems as if your compiler does not recognize that class due to the missing include.

Quote:

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Originally Posted by Richard.J

I'd say you have to include <boost/weak_ptr.hpp> as well. It seems as if your compiler does not recognize that class due to the missing include.

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That completely slipped my mind haha. Cheers. :)

I could not believe that you miss that solution.