dOPC Client Toolkit Help file
TdOPCSvr Events Published Events
Published Events
Published Event 
Description 
OnConnect is generated when a connection has been established with an OPC server. 
OnDisconnect is generated after a disconnect from an OPC server. 
Events
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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