Qt C++ mediator模式（中介者模式）

mediator.h

#pragma once


#include <QDebug>


class CMediator;


class CCountry
{
public:
virtual void setMediator(CMediator *mediator) = 0;
virtual void sendMessage(const QString& message) = 0;
virtual void getMessage(const QString& message) = 0;


QString revMessage() const{return m_revMessage;}


protected:
CMediator *m_mediator;
QString m_revMessage;
};


class CChina : public CCountry
{
public:
CChina(){}
void setMediator(CMediator *mediator)
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