dOPC Client Toolkit Help file
Global Functions

Describes global functions and constants.

Function 
Description 
browse registry for OPC Servers @params Strings List of all OPC Server registered on PC
browse registry for OPC DA Servers only for compilance reason to older versions use TdOPCServerbrowser instead
GetOPCDAServer browses the registry and stores all found OPC DA servers on the computer in the passed Strings parameter. 
only for complinace with older dOPC versions
only for complinace with older dOPC versions
GetOPCServer exists only for compliance with older dOPC versions. 
general functions
NullVal returns NULL as a Variant. 
converts a OleVariant to Delphi string also convert a array to string
converts a OleVariant to Delphi string also convert a array to string
VarToAStr converts the data in the OleVariant parameter Value to a string and returns the result. 
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