C++11之std::bind感悟

 1 #include "pch.h"
 2 #include <iostream>
 3 #include <vector>
 4 #include <functional>
 5 class Base
 6 {
 7 public:
 8     virtual void printMsg() { std::cout << "Base Class" << std::endl; }
 9 };
10 
11 class Derive :public Base
12 {
13 public:
14     virtual void printMsg() { std::cout << "Derive Class" << std::endl; }
15 };
16 
17 class TestClass
18 {
19 public:
20     void PrintMsg(Base **ppbase) { (*ppbase)->printMsg(); }
21 };
22 
23 int main()
24 {
25     std::vector<std::function<void(Base**)>>vec1;
26     TestClass *ptest = new TestClass();
27     Base* pbase = new Base();
28     Base* pder = new Derive();
29     Base** ppbase = &pbase;//增加子类
30     vec1.push_back(std::bind(&TestClass::PrintMsg, ptest, ppbase));
31     *ppbase = pder;//赋值
32     vec1[0](NULL);
33 
34     return 0;
35 }