Opc data Access Automation Specification

4.4.6.4

 

AsyncCancelComplete  

Description 

This event fires when an AsyncCancel is completed. 

Syntax 

AsyncCancelComplete (TransactionID As Long) 

 

Part Description 

TransactionID 

The client specified transaction ID. This is included in the 

‘completion’ information provided in the Corresponding Event. 

61 

 

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OPC Data Access Automation Specification2.02 

 

Example 

Dim WithEvents AnOPCGroup As OPCGroup 

Private Sub AnOPCGroup_AsyncCancelComplete (TransactionID As Long) 

‘ write your client code here to process the cancel  

End Sub 

62 

 

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OPC Data Access Automation Specification2.02 

4.5

 

OPCItems Object 

Description 

This object also has properties for OPCItem defaults. When an OPCItem is added, the 

DefaultXXXX properties set its initial state. The defaults can be changed to add OPCItems with 

different initial states. Of course, once an OPCItem is added, its properties can be modified. This 

reduces the number of parameters required to call the Add method. 

Syntax OPCItems