事件对象编程示例

#pragma once

#include <windows.h>

class CDaemonThread
{
public:
CDaemonThread(void);
~CDaemonThread(void);

static DWORD WINAPI ThreadProc(LPVOID lpParameter);

protected:
HANDLE m_hThread;
HANDLE m_hEvent;
};

CDaemonThread::CDaemonThread(void)
:m_hThread(NULL),
m_hEvent(NULL)
{
m_hEvent = CreateEvent(NULL,TRUE,FALSE,NULL);
if (m_hEvent != NULL)
{
m_hThread = CreateThread(NULL,0,CDaemonThread::ThreadProc,this,0,NULL);
}
}

CDaemonThread::~CDaemonThread(void)
{
if (m_hEvent != NULL)
{
SetEvent(m_hEvent);

if (m_hThread != NULL)
{
if (WaitForSingleObject(m_hThread,1000) == WAIT_TIMEOUT)
TerminateThread(m_hThread,0);
CloseHandle(m_hThread);
}

CloseHandle(m_hEvent);
}
}

DWORD WINAPI CDaemonThread::ThreadProc(LPVOID lpParameter)
{
CDaemonThread* pThis = (CDaemonThread*)lpParameter;
DWORD dwRet = 0;
while(TRUE)
{
dwRet = WaitForSingleObject(pThis->m_hEvent,100);
if (dwRet == WAIT_OBJECT_0)
return 0;
}
return 0;
}