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1.8.4 Unimplemented methods

If the class does not define all the COM methods for the interfaces it implements, then some of those methods may be inherited from superclasses (see Inheritance). If there is no direct or inherited definition of a method, then a default method that returns E_NOTIMPL will be provided automatically. The default method also fills all out arguments with null bytes and ignores all in and in-out arguments except those needed to compute the size of arrays for filling out arguments.


LispWorks COM/Automation User Guide and Reference Manual - 17 Jul 2006

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