设计模式装饰模式实现C++

/*********************************
*设计模式--装饰模式实现
*C++语言
*Author：WangYong
*Blog:http://www.cnblogs.com/newwy
********************************/
#include <iostream>
using namespace std;
class Component
{
	public:
	virtual ~Component(){}
	Component(){}
	virtual void Operation(){}
};
class ConcreteComponent:public Component
{
	public:
	ConcreteComponent(){}
	~ConcreteComponent(){}
	void Operation(){cout<<"ConcreteComponent operation ..."<<endl;}
};
class Decorator:public Component
{
	public:
	Decorator(Component*com){this->_com = com;}
	virtual ~Decorator(){}
	void Operation(){}
	protected:
	Component * _com;
};
class ConcreteDecrator:public Decorator
{
	public:
	ConcreteDecrator(Component*com):Decorator(com){}
	~ConcreteDecrator(){}
	void Operation(){_com->Operation();}
	void AddedBehavior(){cout<<"ConcreteDecrator::AddedBehavior..."<<endl;}
};
int main()
{
	Component*com = new ConcreteComponent();
	Decorator *dec = new ConcreteDecrator(com);
	dec->Operation();
	delete dec;
	return 0;
}