#include <map>

typedef int (*OutputEvent)(const char*, const char*, int);

class A
{
private:
    int nextListenerId;
    std::map<int, OutputEvent> listenerMap;
public:
    A(){ nextListenerId = 0;}
    ~A(){}
    inline int RegisterListener(OutputEvent callback)
    {
        nextListenerId++;
        listenerMap[nextListenerId] = callback;
        return nextListenerId;
    }
};

class B
{
private:
    int listenerId;
public:
    B(const A& a)
    {
        OutputEvent e = &B::CallMeBack;
        listenerId = a.RegisterListener(e);
    }
    ~B(){}

    int CallMeBack(const char* x, const char* y, int z)
    {
        return 0;
    }
};

t.cpp: In constructor 'B::B(const A&)':
Line 28: error: cannot convert 'int (B::*)(const char*, const char*, int)' to 'int (*)(const char*, const char*, int)' in initialization
compilation terminated due to -Wfatal-errors.