cpp test

#include <iostream>
#include <string>

using namespace std;


class RunClass{
    public:
        RunClass() {}
        ~RunClass() {}
    public:
        int FuncTest1(const std::string &str);
        int FuncTest2(const std::string &str);
};

int RunClass::FuncTest1(const std::string &str)
{
    cout << "RunClass::FuncTest1 :" << str << endl;
}

int RunClass::FuncTest2(const std::string &str)
{
    cout << "RunClass::FuncTest2 :" << str << endl;
}

class Dispatcher {
    public:
        Dispatcher() {}
        ~Dispatcher() {}
    public:
        int HandleProcess(int c);
    private:
        template<class ProcessClass> 
        int DoProcess(int (ProcessClass::*ProcessFunc)(const std::string &str), const std::string &str);
};

template<class ProcessClass>
int Dispatcher::DoProcess(int (ProcessClass::*ProcessFunc)(const std::string &str), const std::string &str)
{
    ProcessClass obj;
    int ret = (obj.*ProcessFunc)(str);
    return ret;
}

int Dispatcher::HandleProcess(int c)
{
    int ret = 0;
    if (c == 1) {
        ret = DoProcess<RunClass>(&RunClass::FuncTest1, std::string("HandleProcess c == 1"));
    } else if (c == 2) {
        ret = DoProcess<RunClass>(&RunClass::FuncTest2, std::string("HandleProcess c == 2"));
    } else {
        cout << "Unknow c = " << c << endl;
    }
    return ret;
}

int main(int argc, char *argv[])
{
   Dispatcher d;
   d.HandleProcess(1);
   d.HandleProcess(2);
   d.HandleProcess(3);
   return 0;
}

编译输出：

RunClass::FuncTest1 :HandleProcess c == 1
RunClass::FuncTest2 :HandleProcess c == 2
Unknow c = 3