方法1.

//在用到指標的地方.cpp中
CInfo *pInfo;
pInfo=CInfo::CreateInfo();

//info.h 中是類CInfo的定義
#ifndef INFO_H 
#define INFO_H 
#include <string>
using namespace std;

class CInfo
{
public:
	CInfo();
	~CInfo();
public:
	int agent_state;
	CString matrix_state;
	CString login_platform;
	CString matrix_startTime;
	CString matrix_runTime;
	CString matrix_regTime;
	CString matrix_lastTime;
public:
	static CInfo* CreateInfo();
};

#endif


//類CInfo的.cpp實現
#include "stdafx.h"
#include "info.h"

extern CInfo* pInfo;
CInfo::CInfo()
{
	CInfo* pInfo=NULL;	
}

CInfo::~CInfo()
{
	
}

CInfo* CInfo::CreateInfo()
{
	pInfo=new CInfo();
	pInfo->matrix_state="";
	pInfo->login_platform="";
	pInfo->matrix_startTime="";
	pInfo->matrix_runTime="";
	pInfo->matrix_lastTime="";
	return pInfo;	
}
 

方法2.

//單純的一個指標初始化可以用malloc
//用malloc初始化一個指標
      char *aaa =(char *)malloc(100);//申請了100個位元組 
      memset(aaa,0x00,100); 
      for(int i=0;i<100;i++)         //只能操作0~99這部分資料 
      { 
           aaa[i]=0x01; 
      } 

方法3.

//還有一種
BYTE* pData = new BYTE[len];
//用完後
delete[] pData;