IOPCUAClientSubscriptionCallback.StateChangeCallback (METH)¶

METHOD StateChangeCallback : OpcUa_StatusCode

The callback is called when the state of a subscription has changed. This happens typically after creation (OpcUaClient_CreateSubscription) or OpcUaClient_SetPublishingMode of a subscription.

InOut:

Scope	Name	Type
Return	StateChangeCallback	OpcUa_StatusCode
Input	hSubscription	RTS_IEC_HANDLE
	newState	OPCUAClientSubscriptionState
	reason	OpcUa_StatusCode