Called by the built in implementation of
com-object-query-interface object iid
A COM object.
A GUID foreign pointer.
com-object-query-interface (object standard-i-unknown)
The generic function
com-object-query-interface is called by the built-in implementation of
query-interface for the class standard-i-unknown. The built-in primary method specializing on
standard-i-unknown handles the
i-unknown interface and all the interfaces specified by the
define-com-implementation form for the class of object.
In most cases, there is no need to specialize this generic function for user-defined classes.
This function should not be called directly by user code.
LispWorks COM/Automation User Guide and Reference Manual - 14 Feb 2015