Try/catch (or __try __except) functions for intercept exceptions

[Alex76Esa]

Hello,
I would like to use a __try __except functions to prevent an exception if something goes wrong when calling "addNodeAndReference" method of NodeManagerBase derived class.

Code: Select all

UaStatus NodeManagerESA::AddRef(OpcUa::FolderType* pFatherFolder, OpcUa::FolderType* pChildFolder, UI32 j)
{
	UaStatus ret = OpcUa_Bad;

	__try
	{
		if (j == 0)
			ret = addNodeAndReference(OpcUaId_ObjectsFolder, pChildFolder, OpcUaId_Organizes);
		else
			ret = addNodeAndReference(pFatherFolder, pChildFolder, OpcUaId_Organizes);
	}
	__except (true)
	{
		ret = OpcUa_Bad;
	}

	return ret;
}

When I try to compile this code, an error will be generated:
"error C2712: Cannot use __try in functions that require object unwinding"

Can someone explain to me the correct way for prevent fatal errors and handle exceptions?
Thanks
Alessandro

[Support Team]

Hello Alex,

the SDK does not throw exceptions. All you need to do is check the UaStatus addNodeAndReference returns.