如何创建线程来监听端口的消息[ReadFile(.....)]返回啊？

Question

采用非阻塞的IO来发送...在发送消息后[WriteFile(....)],捕获返回的消息！

Answer 1

你到VCKBASE下一个CSerialPort，在主页里搜索就能看到，下面是片断：void CSerialPort::ReadEx(void* lpBuf, DWORD dwCount)
{
  ASSERT(IsOpen());  OVERLAPPED* pOverlapped = new OVERLAPPED;
  ZeroMemory(pOverlapped, sizeof(OVERLAPPED));
  pOverlapped->hEvent = (HANDLE) this;
  if (!ReadFileEx(m_hComm, lpBuf, dwCount, pOverlapped, _OnCompletion))
  {
    delete pOverlapped;
    TRACE(_T("Failed in call to ReadFileEx\n"));
    AfxThrowSerialException();
  }
}

Answer 2

msdn sample里面搜索tty，有例子，主要是开一个线程SetCommMask, WaitCommEvent