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//Command.h 
#ifndef _COMMAND_H_  
#define _COMMAND_H_ 
 
class Reciever; 
 
class Command  
{  
public:  
	virtual ~Command(); 
	virtual void Excute() = 0; 
protected:  
	Command(); 
private: 
}; 
 
class ConcreteCommand:public Command  
{  
public:  
	ConcreteCommand(Reciever* rev); 
	~ConcreteCommand(); 
	void Excute(); 
protected: 
private:  
	Reciever* _rev;  
}; 
 
#endif