dOPC Client Toolkit Help file
Global Functions

Describes global functions and constants.

Function 
Description 
GetItemProp returns the current data value for the item with the passed ItemId and the passed PropId on the passed OPCServer. 
Call this procedure in a thread, to process dOPC OnDatachange events You can also use Application.ProcessMessages
call this procedure in a thread, to process dOPC OnDatachange events
ProcessdOPCMessages is used in threads to process OnDatachange events. 
ServerStateToStr converts the data in the State parameter (the current ServerState) to a string and returns the result. 
Type 
Description 
TOnOPCDataChangeEvent is generated when a value or the quality of a value for an item has changed. 
Variable 
Description 
Set is variable to true when developing server-like applications, which cannot require user interaction.
dOPCUseExceptionOnAddItems has to be set to True when developing server-like applications which cannot exercise user interaction. 
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