代理模式,对象适配器模式的区别:
适配器模式:适配者与被适配者接口不同,为了是用户使用同一的接口。
代理模式:代理者与被代理者接口相同,只是客户不能访问到被代理者。
#include <iostream> using namespace std; // struct IImage { public: IImage(string name) : m_name(name) { } virtual ~IImage() { } virtual void Show() = 0; protected: string m_name; }; class CBigImage : public IImage { public: CBigImage(string name) : IImage(name) { } virtual ~CBigImage() { } virtual void Show() { cout<<m_name.c_str()<<endl; } }; class CBigImageProxy : public IImage { public: CBigImageProxy(string name) : IImage(name) { m_pBigImage = new CBigImage(m_name); } virtual ~CBigImageProxy() { if(m_pBigImage) { delete m_pBigImage; m_pBigImage = NULL; } } virtual void Show() { m_pBigImage->Show(); } private: CBigImage *m_pBigImage; }; // void main() { CBigImageProxy bigImageProxy("Big Image."); bigImageProxy.Show(); }