C ++通过智能指针的向量迭代

本文介绍了C ++通过智能指针的向量迭代的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

我有一个类有这个功能：

i have a class that has this function:

typedef boost::shared_ptr<PrimShapeBase> sp_PrimShapeBase; class Control{ public: //other functions RenderVectors(SDL_Surface*destination, sp_PrimShapeBase); private: //other vars vector<sp_PrimShapeBase> LineVector; }; //the problem of the program void Control::RenderVectors(SDL_Surface*destination, sp_PrimShapeBase){ vector<sp_PrimShapeBase>::iterator i; //iterate through the vector for(i = LineVector.begin(); i != LineVector.end(); i ++ ){ //access a certain function of the class PrimShapeBase through the smart //pointers (i)->RenderShape(destination); } }

编译器告诉我类boost :: shared_ptr 没有名为RenderShape的成员，我觉得奇怪，因为类PrimShapeBase肯定有这个函数，但是在一个不同的头文件。 这是什么原因？

The compiler tells me that the class boost::shared_ptr has no member called 'RenderShape' which I find bizarre since the class PrimShapeBase certainly has that function but is in a different header file. What is the cause of this?

推荐答案

不是指

(*i)->RenderShape(destination);

？

i 是迭代器， * i 是 shared_ptr ，（* i）:: operator->（）是对象。

i is the iterator, *i is the shared_ptr, (*i)::operator->() is the object.