C++ 委托 fastdelegate使用，实现类函数回调绑定
搜索下载文件： fastdelegate.h
下载地址：
http://code.google.com/p/code-adintr-com/source/browse/trunk/mylib/aslib/utility/FastDelegate.h?r=4
#include <stdio.h>#include "fastdelegate.h"/////////////////////////////////被委托绑定的类成员函数class Calculator{public:int Add(int nA, int nB){return nA + nB;}int Sub(int nA, int nB){return nA - nB;}int Multi(int nA, int nB){return nA * nB;}};///////////////////////////////////////////////////////////////////定义函数指针typedef fastdelegate::FastDelegate2<int, int, int> AddFunc;typedef fastdelegate::FastDelegate2<int, int, int> SubFunc;typedef fastdelegate::FastDelegate2<int, int, int> MultiFunc;//实现绑定到处理类class CalcHander{public:template <class X, class Y, class Param1, class Param2, class RetType>void bind_add(Y* x, RetType (X::*func)(Param1 p1, Param2 p2)){pAddFunc = fastdelegate::MakeDelegate(x, func);}template <class X, class Y, class Param1, class Param2, class RetType>void bind_sub(Y* x, RetType (X::*func)(Param1 p1, Param2 p2)){pSubFunc = fastdelegate::MakeDelegate(x, func);}template <class X, class Y, class Param1, class Param2, class RetType>void bind_Multi(Y* x, RetType (X::*func)(Param1 p1, Param2 p2)){pMultiFunc = fastdelegate::MakeDelegate(x, func);}public:void Init(Calculator *pCalculator){bind_add(pCalculator, &Calculator::Add);bind_sub(pCalculator, &Calculator::Sub);bind_Multi(pCalculator, &Calculator::Multi);}void ExecuteAdd(int nA, int nB){int nSum = pAddFunc(nA, nB);printf("Sum=%d\n", nSum);}void ExecuteSub(int nA, int nB){int nSub = pSubFunc(nA, nB);printf("Sub=%d\n", nSub);}void ExecuteMulti(int nA, int nB){int nMulti = pMultiFunc(nA, nB);printf("Multi=%d\n", nMulti);}private:AddFuncpAddFunc;SubFuncpSubFunc;MultiFuncpMultiFunc;};int main(int argc, char* argv[]){Calculator calculator;//被绑定对象声明CalcHander calcHander;//主动绑定的对象声明calcHander.Init(&calculator);//函数绑定//执行函数，调用绑定函数calcHander.ExecuteAdd(200, 100);//300相当于调用 calculator.Add(200, 100);calcHander.ExecuteSub(300, 100);//200相当于调用 calculator.Sub(300, 100);calcHander.ExecuteMulti(50, 20);//1000相当于调用 calculator.Multi(50, 20);return 0;}