在实际中由于在NvMonitorPoint的UpdateEvent的事件中响应的是所有的nv事件， 考虑可能对于节点太多的情况就是用多线程也未必能达到即时， 所以想采用ILcaNvMonitorPointListener的UpdateEvent事件来触发。 我在编程资料中看到如下内容。 To create an object which receives network variable UpdateEvent updates, follow these steps: 1.Create an object which implements the ILcaNvMonitorPointListener interface. 2.Define the object"s behavior when the UpdateEvent method is called. 3.Call a NvMonitorPoint object"s Advise with the object created in step 1 as an argument. The object will now call this method whenever a network variable monitor point update is receivedmonitor point update is received. 但是ILcaNvMonitorPointListener的定义是 ILcaNvMonitorPointListener : public IUnknown { public: virtual /* [helpcontext] */ HRESULT __stdcall UpdateEvent( /* [in] */ ILcaDataPoint __RPC_FAR *DataPoint, /* [in] */ ILcaSourceAddress __RPC_FAR *SrcAddr) = 0; virtual /* [helpcontext] */ HRESULT __stdcall UpdateErrorEvent( /* [in] */ short UpdateType) = 0; }; 这样的话如何实现ILcaNvMonitorPointListener接口呢？紧接着下面也很难实现。不知道可以不可以指导一下。