線程裡面訪問私人成員變數 ，ok

 

// testflag.cpp : 定義控制台應用程式的進入點。
//

#include "stdafx.h"

#include "Windows.h"
#include "process.h"

 

class CNullPointCall
{
public:
 CNullPointCall(void){
  flag=true;

 };

 static inline UINT ListenToAdapter(LPVOID lpParam);

 void startlisten(void);

 void SetValue(bool flag_1)
 {
  flag=flag_1;
 }

private:
 bool flag;
};

UINT CNullPointCall::ListenToAdapter(LPVOID lpParameter)
{
 CNullPointCall *pthis=(CNullPointCall*)lpParameter;

  while(pthis->flag)
  {
   printf("run here \n");
   Sleep(200);
  }
  printf("exit thread\n");
  return 0;
}

void CNullPointCall::startlisten(void)
{
 HANDLE pImgProcThread;
 DWORD dwThread;

 pImgProcThread =CreateThread(NULL,0,(LPTHREAD_START_ROUTINE)ListenToAdapter,(LPVOID)this,0,&dwThread);
}

 

int _tmain(int argc, _TCHAR* argv[])
{
 CNullPointCall ptmp;
 ptmp.startlisten();
 Sleep(3000);

 ptmp.SetValue(false);
 Sleep(1000);

 return 0;
}