dOPC Client Toolkit Help file
TdOPCSvr Events
TdOPCSvr Events
TdOPCSvr Events 
OnConnect is generated when a connection has been established with an OPC server. 
OnDeleteEvent is generated when an event is deleted from the Events collection. 
OnDisconnect is generated after a disconnect from an OPC server. 
OnError is generated if any error occurred on the OPC server. 
OnEvent is generated when the server receives a new event notification. 
OnEventAck is generated when the client acknowledges an event. 
OnServerShutdown is generated when the OPC server plans to shut down. 
OnTimeout is generated when the connection to the OPC server has timed out.
The value of property KeepAlive must greater than zero 
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