Adpater

zhangxiaonanwin

于 2010-11-27 08:56:00 发布

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分类专栏： c++ patterns 2010-11-26 文章标签： class delete system

本文链接：https://blog.youkuaiyun.com/zhangxiaonanwin/article/details/6038726

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本文通过一个具体的C++代码示例介绍了如何使用多继承实现适配器模式，使目标类能够利用适配者类的功能。该模式下，适配器类作为目标类和适配者类的子类，实现了将适配者接口转换为目标类接口的目标。

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利用多继承使target类拥有了Adpatee的功能

#include <cstdlib>
#include <iostream>

using namespace std;

class Target
{
public:
virtual ~Target(){cout<<"Target 基类析构"<<endl;}
virtual void TargetDo(){cout<<"Target do sth."<<endl;}
virtual void AdpateeDo() = 0;
};
class Adpatee
{
public:
virtual ~Adpatee(){cout<<"Adpatee 基类析构"<<endl;}
void Do(){cout<<"Adpatee do sth."<<endl;}
};
class Adpater:public Target,private Adpatee
{
public:
virtual ~Adpater(){cout<<"Adpater 子类析构"<<endl;}
virtual void AdpateeDo(){Adpatee::Do();}
};
void DoUseTarget(Adpater* pAdp)
{
pAdp->TargetDo();
pAdp->AdpateeDo();
}
int main(int argc, char *argv[])
{
    Adpater* pAdp = new Adpater;
    DoUseTarget(pAdp);
    delete pAdp;
    system("PAUSE");
    return EXIT_SUCCESS;
}