In order to gain access to all COM objects of OPC Data Client "Classic", you need types described in the following type libraries:

Type Library Name	LIBID	Note
OPC Labs Base Library	ecf2e77d-3a90-4fb8-b0e2-f529f0cae9c9
OPC Labs Base Library Components	1F127C9A-7FB7-4F5E-BCF6-64339872A64B
OPC Labs Base Library Forms	A0D7CA1E-7D8C-4D31-8ECB-84929E77E331	only for User Interface objects
OPC Labs EasyOPC “Classic” Library	1F165598-2F77-41C8-A9F9-EAF00C943F9F
OPC Labs EasyOPC “Classic” Components Library	A03AA108-3C6B-4CB0-A813-BCBBCD335DAE
OPC Labs EasyOPC “Classic” Core Library	1F457B45-A4E0-4A92-928F-D1D1ACB67C54
OPC Labs EasyOPC Forms	2C654FA0-6CD6-496D-A64E-CE2D2925F388	only for User Interface objects

For illustration and for your convenience, we have listed below examples of source code reference statements for the “OPC Labs EasyOPC “Classic” Library” in various languages and tools.

Language/tool	Statement
C++	#import" libid:1F165598-2F77-41C8-A9F9-EAF00C943F9F"      // OpcLabs.EasyOpcClassic
WSH	<referenceguid="{1F165598-2F77-41C8-A9F9-EAF00C943F9F}" /> <!--OpcLabs.EasyOpcClassic-->
ASP	<!—METADATA TYPE="TypeLib" NAME="OPC Labs Easy “Classic” Library" UUID="{1F165598-2F77-41C8-A9F9-EAF00C943F9F}" -->