针对MFC中winmain隐藏的一个模仿（第6章）this指针在继承中的重要性
#include<iostream>using std::cout;using std::endl;class base;base* x; //全局指针class base{public: base(){ x=this; //this指向实际的对象，派生类产生后将指向派生类对象。 } virtual void rprint(){ cout<<"this point to base"<<endl; }};int main(){ x->rprint(); return 0;}class derive:public base{public: derive(){} ...