c++ - SERVICE_CONTROL_DEVICEEVENT 拔出“禁用设备”时不通知

Question

拜托，你能告诉我我做错了什么吗？

为什么在插入/拔出“禁用设备SERVICE_CONTROL_DEVICEEVENT”时不通知（我的意思是在设备管理器中禁用设备）？

如果设备启用，一切正常。这是我的源代码：

• 注册通知：

  m_hServiceStatus = RegisterServiceCtrlHandlerEx(m_szServiceName, HandlerEx, NULL);
  if (m_hServiceStatus == NULL)
  {
      return;
  }
  
  DWORD dwState = SERVICE_START_PENDING;
  SetServiceStatus(m_hServiceStatus, &dwState);
  
  // Register device notification
  DEV_BROADCAST_DEVICEINTERFACE notificationFilter;
  ZeroMemory( &notificationFilter, sizeof(notificationFilter) );
  notificationFilter.dbcc_size = sizeof(DEV_BROADCAST_DEVICEINTERFACE);
  notificationFilter.dbcc_devicetype = DBT_DEVTYP_DEVICEINTERFACE;
  
  if(NULL == (m_hDevNotify = RegisterDeviceNotification(m_hServiceStatus, &notificationFilter, DEVICE_NOTIFY_SERVICE_HANDLE|DEVICE_NOTIFY_ALL_INTERFACE_CLASSES)))
  {
      return;
  }
  

• HandlerEx功能：

  DWORD HandlerEx(DWORD dwOpcode, DWORD dwEventType, LPVOID lpEventData, LPVOID /*lpContext*/) throw()
  {
      DWORD dwRes = ERROR_CALL_NOT_IMPLEMENTED;
      switch (dwOpcode)
      {
      case SERVICE_CONTROL_STOP:
          if (m_hDevNotify)
          {
              UnregisterDeviceNotification(m_hDevNotify);
              m_hDevNotify = NULL;                
          }
          dwRes = NO_ERROR;
          break;
      case SERVICE_CONTROL_SHUTDOWN:
          if (m_hDevNotify)
          {
              UnregisterDeviceNotification(m_hDevNotify);
              m_hDevNotify = NULL;
          }
          dwRes = NO_ERROR;
          break;
      case SERVICE_CONTROL_DEVICEEVENT:
          {
              // ToDo: process event notification
              dwRes = NO_ERROR;
          }
          break;
      default:
          break;
      }
      return dwRes;
  }
  

提前谢谢你的帮助！