一个简单的CPP处理框架

#ifndef __BASEINTERFACE_H__
#define __BASEINTERFACE_H__
#include <iostream>
using namespace std;
class CBaseInterface;
typedef int (CBaseInterface::*MsgAction)(int, void *, int);
class CBaseInterface
{
public:
    CBaseInterface(){};
    virtual ~CBaseInterface(){};
};
#endif /* __BASEINTERFACE_H__ */

#ifndef __PROCESSDATA_H__
#define __PROCESSDATA_H__
#include <map>
#include "baseInterface.h"
using namespace std;
class CProcessData
{
protected:
    CProcessData();
    ~CProcessData();
public:
    static CProcessData* GetInstance();
    int ProcessData(int iID, void *pData, int iDataLen);  //处理消息
    int RegIdFunction(int iID, MsgAction func);           //注册消息处理成员函数
private:
    map<int , MsgAction>m_FucnMap;  //用于存储消息id与处理函数的对应表·
    static CProcessData* m_pInstance;
};
类实现代码：
#include "processData.h"
CProcessData::CProcessData()
{
}
CProcessData::~CProcessData()
{
}
int CProcessData::RegIdFunction(int iID, MsgAction func)
{
m_FucnMap[iID] = func;
return 0;
}
int CProcessData::ProcessData(int iID, void *pData, int iDataLen)
{
map<int, MsgAction>::iterator iter = m_FucnMap.find(iID);
if ( iter != m_FucnMap.end() )
{
   ((CBaseInterface*)this->*(iter->second))(iID, pData, iDataLen);
}
else
{
   cout<<"in CProcessData::ProcessData, not  find id: "<<iID<<" process func!"<<endl;
}
return 0;
}
CProcessData* CProcessData::m_pInstance = NULL;
CProcessData* CProcessData::GetInstance()
{
if ( m_pInstance == NULL )
{
   m_pInstance = new CProcessData;
}
return m_pInstance;
}

#include "baseInterface.h"
#include "processData.h"
class CTest: public CBaseInterface
{
public:
    virtual ~CTest(){};
    int Init()
    {
        CProcessData::GetInstance()->RegIdFunction(1, (MsgAction)&CTest::ProcessData1);
        CProcessData::GetInstance()->RegIdFunction(2, (MsgAction)&CTest::ProcessData2);
        return 0;
    }
    int ProcessData1(int iId, void *pData, int iLen)
    {
        val = 1;
        cout <<" process cmd1, id: "<<iId<<", iLen: "<<iLen<<", val = "<<val++<<endl;
        return 0;
    }
    int ProcessData2(int iId, void *pData, int iLen)
    {
        cout <<" process cmd1, id: "<<iId<<", iLen: "<<iLen<<", val = "<<val++<<endl;
        return 0;
    }
private:
    int val;
};

#include <iostream>
#include "processData.h"
#include "test.h"
int main(int argc, char **argv)
{
CTest test;
test.Init();
CProcessData::GetInstance()->ProcessData(1, NULL, 2);
CProcessData::GetInstance()->ProcessData(2, NULL, 3);
return 0;
}