请教个问题：如何在窗体类中结束正在运行的子线程？

Question

//停止线程
void CVoiceRecordDlg::OnStopService() 
{ 
    CVoiceManager mVoiceManager;
    mVoiceManager.isExitThrd  = 1;//子类中无法接收到这个值    if (线程句柄不为空)
    {
        //程序会在这里阻塞!!!!!!
DWORD dwWaitThClose = WaitForSingleObject(mVoiceManager.hThrd,INFINITE); 
BOOL retCloseHandle = CloseHandle(mVoiceManager.hThrd); 
    }
}class CVoiceManager
{ public:
      volatile int isExitThrd;
}CVoiceManager::CVoiceManager()
{ isExitThrd = 0;//初值为0
}
//=================================
//启动线程
void CVoiceManager::StartVoiceThrd()
{ hThrd = CreateThread(NULL, 0, ReceivingThrd, this, 0, &dwID);
}//线程功能函数
void CVoiceManager::ReceivingLoop(void)
{   //isExitThrd无法接收到为1的值
    while(!isExitThrd) 
    {  } //处理任务    DWORD m;
    GetExitCodeThread(线程句柄,&m); //结束线程
    ::ExitThread(m);
}

Answer 1

//启动线程
void CVoiceManager::StartVoiceThrd()
{ hThrd = CreateThread(NULL, 0, ReceivingThrd, this, 0, &dwID);
}DWORD WINAPI CVoiceManager::ReceivingThrd(void * pParam)
{ ASSERT(pParam);
CVoiceManager * pController = (CVoiceManager*) pParam;
pController->ReceivingLoop(); 
return 0;
}//线程功能函数
void CVoiceManager::ReceivingLoop(void)
{  while(!isExitThrd) 
   {}
}

Answer 2

BOOL TerminateThread(
  HANDLE hThread,    // handle to thread
  DWORD dwExitCode   // exit code
);

Answer 3

TerminateThread 无法把资源正常释放掉啊

Answer 4

    CVoiceManager mVoiceManager;
    mVoiceManager.isExitThrd  = 1;//子类中无法接收到这个值
你生成一个新变量设置为1有什么用？原先那个变量呢？

Answer 5

CVoiceManager mVoiceManager; 
mVoiceManager.isExitThrd  = 1;//子类中无法接收到这个值//================================================
CVoiceManager mVoiceManager;  // 这个是临时变量, mVoiceManager并未启动线程;

Answer 6

CVoiceManager mVoiceManager; 
这个对象是在VoiceRecordDlg.h头文件中创建的

Answer 7

//停止线程
void CVoiceRecordDlg::OnStopService() 
{ 
    //VoiceRecordDlg头文件冲创建对象CVoiceManager mVoiceManager;
    mVoiceManager.isExitThrd  = 1;//子类中无法接收到这个值    if (线程句柄不为空)
    {
        //程序会在这里阻塞!!!!!!
    DWORD dwWaitThClose = WaitForSingleObject(mVoiceManager.hThrd,INFINITE);             
    BOOL retCloseHandle = CloseHandle(mVoiceManager.hThrd); 
    }
}class CVoiceManager
{ public:
      volatile int isExitThrd;
}CVoiceManager::CVoiceManager()
{    isExitThrd = 0;//初值为0
}
//=================================
//启动线程
void CVoiceManager::StartVoiceThrd()
{ hThrd = CreateThread(NULL, 0, ReceivingThrd, this, 0, &dwID);
}//线程功能函数
void CVoiceManager::ReceivingLoop(void)
{   //isExitThrd无法接收到为1的值
    while(!isExitThrd) 
    {  } //处理任务    DWORD m;
    GetExitCodeThread(线程句柄,&m); //结束线程
    ::ExitThread(m);
}

Answer 8

isExitThrd 这个变量，
在线程外部被修改后，无法等到最新的值

Answer 9

static类型的变量可以么，或者extern类型的变量？

Answer 10

//下面的方式给类的静态变量赋值，是否可以？
class CVoiceManager
{
 public:
static int bFlag;
}//函数外部给变量赋值
int CVoiceManager::bFlag = 1;

Answer 11

mVoiceManager是个全局变量？把你所有用到mVoiceManager的地方统统改成::mVoiceManager（用针对所有文件的搜索替换），就绝对不会有问题了。