A complete implementation of the i-unknown interface.
provides a complete implementation of the i-unknown interface.
The class provides a reference count for the object which calls the generic function
when the object is given a reference count and
when it becomes zero again. These generic functions can be specialized to perform initialization and cleanup operations.
The class also provides an implementation of
which calls the generic function
. The default method handles
and all the interfaces specified by the
form for the class of the object.
LispWorks COM/Automation User Guide and Reference Manual - 19 Dec 2011