类成员函数指针

class Base
{
public:
	Base():f_(0){}
	virtual ~Base(){}

public:
	typedef void (Base::*FUNC)();
	void setf(FUNC f)
	{
		f_ = f;
	}
	FUNC getf()
	{
		return f_;
	}
public:
	FUNC f_;
};

class Derived:public Base
{
public:
	void test1()
	{
		cout<<"Derived:Test1"<<endl;
	}
	void test2()
	{
		cout<<"Derived:Test2"<<endl;
	}
};

如果定义一个类成员函数指针,在类外部(非类成员)

int main()
{
	void (Derived::*Fun)();
	Fun = &Derived::test1;
	Derived obj;
	(obj.*Fun)();
	Derived *p = new Derived;
	(p->*Fun)();
	return 0;
}

如果定义一个类成员函数指针在类里面(类成员),可以这样调用

int main()
{
	Base *p = new Derived;
	p->setf(static_cast<Base::FUNC>(&Derived::test1));
	(p->*(p->getf()))();
	(p->*(p->f_))();//public
	return 0;
}