www.pudn.com > Mydesign.rar > Handle.h

//Handle.h 
 
#ifndef _HANDLE_H_  
#define _HANDLE_H_ 
 
class Handle  
{  
public:  
	virtual ~Handle(); 
	virtual void HandleRequest() = 0; 
	void SetSuccessor(Handle* succ); 
	Handle* GetSuccessor(); 
protected:  
	Handle(); 
	Handle(Handle* succ); 
private:  
	Handle* _succ;  
}; 
 
class ConcreteHandleA:public Handle  
{  
public:  
	ConcreteHandleA(); 
	~ConcreteHandleA(); 
	ConcreteHandleA(Handle* succ); 
	void HandleRequest(); 
protected: 
private: 
}; 
 
class ConcreteHandleB:public Handle  
{  
public:  
	ConcreteHandleB(); 
	~ConcreteHandleB(); 
	ConcreteHandleB(Handle* succ); 
	void HandleRequest(); 
protected: 
private: 
};  
 
#endif