C++中两个类中互相包含对方对象的指针问题(转载)

出处:http://www.cnblogs.com/hanxi/archive/2012/07/25/2608068.html

 

// A.h
#include "B.h"
class A
{
public:
    A(B* pB):m_pB(pB) {}
    void useB();
private:
    B* m_pB;
};

//A.cpp
#include "A.h"
void A::useB()
{
    //do something for m_pB
}


//B.h
class A;
class B
{
public:
    B(A* pA):m_pA(pA) {}
    void useA();
    
private:
    A* m_pA;
};

//B.h
#include "A.h"
#include "B.h"
void B::useA()
{
    //do something for m_pA
    m_pA = new A;
}