意圖：將一個請求封裝為一個對象，從而使你可用不同的請求對客戶進行參數化；對請求排隊或記錄請求日志，以及支持可撤消的操作。

class Receiver { public:Receiver(){}virtual ~Receiver(){}virtual void Action(){cout<<"Receiver::Action()"<<endl;} };class Command { public:Command(){}virtual ~Command(){}virtual void Execute() = 0; };class ConcreteCommand: public Command { public:ConcreteCommand(Receiver* receiver){this->receiver = receiver;}~ConcreteCommand(){}void Execute(){cout<<"ConcreteCommand::Execute()"<<endl;receiver->Action();}private:Receiver* receiver; };class Invoker { public:Invoker(Command* cmd){this->cmd = cmd;}~Invoker(){}void Invoke(){cmd->Execute();}private:Command* cmd; };

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轉載于:https://www.cnblogs.com/lianghuiwen/archive/2013/05/06/3062785.html

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