#ifndef __CALLBACK_PROXY_H__? #define __CALLBACK_PROXY_H__ //Tobject:调用对象的类型,Tparam回调函数参数的类型 template<typename Tobject, typename Tparam> class CCallbackProxy { typedef void (Tobject::*CbFun)(Tparam*); public: void Set(Tobject *pInstance, CbFun pFun); bool Exec(Tparam* pParam); private: CbFun pCbFun; //回调函数指针 Tobject* m_pInstance; //调用对象 }; //设置调用对象及其回调函数 template<typename Tobject, typename Tparam> void CCallbackProxy<Tobject, Tparam>::Set(Tobject *pInstance , CbFun pFun) { m_pInstance = pInstance; pCbFun = pFun; }; //调用回调函数 template<typename Tobject, typename Tparam> bool CCallbackProxy<Tobject, Tparam>::Exec(Tparam* pParam) { (m_pInstance->*pCbFun)(pParam); return true; } #endif
?下面演示下如何使用该类
? test.cpp#include "CallbackProxy.h" class CTest { public: CTest(int nNum); void CbPrintSum(int *pnAddNum){printf("The Sum is %d\n", m_nSum+*pnAddNum);}; private: int m_nSum; }; int main(int argc, char* argv[]) { CCallbackProxy<CTest, int> CbProxy; CTest TestInstance(20); CbProxy.Set(&TestInstance, &CTest::CbPrintSum); int nNum = 1000; CbProxy.Exec(&nNum); return 0; } CTest::CTest(int nNum): m_nSum(nNum) { }?