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Macro System.CATBeginImplementClass

Macro CATBeginImplementClass (Class,Typeofclass,Basemeta,Impmeta)

Begins an extension definition sequence.
Role: Begins a macro sequence for Class to declare that it implements interfaces as an extension of the Impmeta class. Replaces the CATImplementClass macro when Class extends several implementation classes. To be used in conjunction with the CATAddClassExtension macro to declare other extended implementation classes and CATEndImplementClass macro to end the extension declaration sequence. Use this macro in the Class source (.cpp) file. Do not end it with a semicolon.

Parameters:

Class: The current extension class
Typeofclass: The extension type
Legal values: it can be set to DataExtension, CodeExtension or CacheExtension
Basemeta: The class from which Class OM-derives.
Legal values:: must be set to
Impmeta: The implementation class for which Class is an extension

This object is included in the file: CATMacForIUnknown.h