C++ Based OPC UA Client/Server SDK  1.5.5.355
IOVariableCallback Class Referenceabstract

The callback interface for data monitored items. More...

#include <iomanager.h>

Inherited by UaMonitoredItemData.

Public Member Functions

 IOVariableCallback ()
 Construction.
 
virtual ~IOVariableCallback ()
 Destruction.
 
virtual void dataChange (const UaDataValue &dataValue)=0
 Send changed data. More...
 
virtual UaDataValue getLastValue ()=0
 Get last value send with dataChange.
 
virtual OpcUa_Int32 getRemainingQueueSize ()
 Get the number of free slots in the queue If no queue is provided, the return value is -1.
 

Detailed Description

The callback interface for data monitored items.

Member Function Documentation

virtual void IOVariableCallback::dataChange ( const UaDataValue dataValue)
pure virtual

Send changed data.

Parameters
dataValueContains the value, timestamps and result code for the changed data

Implemented in UaMonitoredItemData.


The documentation for this class was generated from the following file: