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Invalid use of incomplete type

stav (186)
Hi

I have two calsses: MyObject and MyLogic

MyObject inherits from MyLogic
but MyLogic needs to have a reference to MyObject.
So i forward declared MyObject in MyLogic but its giving me an Invalid use of incomplete type error


Code:

MyObject.h
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#pragma once

#include <string>
#include "MyLogic.h"

typedef std::string ObjectID;

class MyObject : public MyLogic
{
   private:
      const ObjectID objectID;

   public:
      MyObject(ObjectID id);
      ~MyObject();

      const ObjectID GetID();
};




MyObject.cc
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#include "MyObject.h"

MyObject::MyObject(ObjectID id)
   :MyLogic(this)
   ,objectID(id)
{

}

MyObject::~MyObject()
{

}


const ObjectID MyObject::GetID()
{
   return this->objectID;
}



MyLogic.h
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#pragma once

#include <vector>
#include <memory>

class MyObject;

class MyLogic
{
   private:
      MyObject* object;

   public:

      MyLogic(MyObject* obj);
      ~MyLogic();

      void Update();

};



MyLogic.cc
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#include "MyLogic.h"

MyLogic::MyLogic(MyObject* obj)
   :object(obj)
{

}

MyLogic::~MyLogic()
{

}

void MyLogic::Update()
{
   //this->object->GetID(); this results in 'invalid use of incomplete type' error

}


I tried looking it up, and it seems to happen when you circular include,
but i'm not circular including ?
or am i?
Last edited on
keskiverto (10362)
Include "MyObject.h" in MyLogic.cc.


However, whenever design looks complicated you should ask yourself whether it is an appropriate design. Perhaps some different design could achieve all your goals with less mind-boggling?
stav (186)
oh, of course.

Yeah i think i will try to rethink my design again

Thanks so much :)



Last edited on
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