Windows监则目录文件变化事件响应

//
//unsigned long __stdcall notificationThread(void* parameter)
//{
//    char buff[100] = { 0 };
//    HANDLE notificationHandle = FindFirstChangeNotificationW(
//        L"C:\\XX\DD\\", true, FILE_NOTIFY_CHANGE_FILE_NAME | FILE_NOTIFY_CHANGE_LAST_WRITE);
//
//    hShutDownEvent = CreateEventW(NULL, true, false, NULL);;
//    sprintf_s(buff, sizeof(buff), "hShutDownEvent=0x%p\n", hShutDownEvent);
//    OutputDebugStringA(buff);
//
//    HANDLE handles[2] = { hShutDownEvent, notificationHandle };
//    while (true)
//    {
//        DWORD which = WaitForMultipleObjects(2, handles, false, INFINITE);
//        OutputDebugStringA("Device Change\n");
//        DWORD e = GetLastError();
//        if (which == WAIT_OBJECT_0)//hShutDownEvent
//        {
//            OutputDebugStringA("break out\n");
//            break;
//        }
//        else if (which == WAIT_OBJECT_0 + 1) //notificationHandle
//        {
//            OutputDebugStringA("begin open file\n");
//            std::string str;    
//            GetBufferFromFile(L"\\??\\C:\\XX\\DD\\config.txt", str);
//            OutputDebugStringA("end open file\n");
//
//            memset(buff, 0, sizeof(buff));
//            if (str.size())
//            {
//                memcpy(buff, &str.at(0), str.size());
//                nDelay = atoi(buff);
//                sprintf_s(buff, sizeof(buff), "nDealay=%d\n", nDelay);
//                OutputDebugStringA(buff);
//            }
//
//            FindNextChangeNotification(notificationHandle);
//        }
//        else
//        {
//            sprintf_s(buff, sizeof(buff), "which=%0x err=0x%x\n", which,e);
//            OutputDebugStringA(buff);
//        }
//    }
//    FindCloseChangeNotification(notificationHandle);
//
//    OutputDebugStringA("notificationThread thread exit\n");
//    return 0;
//}