Register or unregister an object for destruction when a pinboard-layout is destroyed.
A Lisp object.
unrecord-dependent-object are part of a mechanism for destroying objects when a pinboard-layout is destroyed.
record-dependent-object records the object
, which means that when
is destroyed, destroy-dependent-object is applied to
These functions are not designed to deal with many calls to
unrecord-dependent-object. If you need to deal with many objects, you can either use the
of pinboard-layout (inherited from output-pane), or add a single object of your object type (class or structure) and define a destroy-dependent-object method for it that will deal with the many objects in an optimal way.
CAPI User Guide and Reference Manual (Macintosh version) - 3 Aug 2017