libaps-general

[Jeff B. <kl...@ma...>]

From: "Jeff Brown" <jef...@co...>
Subject: Identification of object types
Date: Wednesday, February 09, 2000 5:22 pm


APS needs a mechanism for providing the application with the type of an
object given its handle.  This could be used if the application caches
objects aggressively and needs to find out what they are.  Alternately, it
could be used to protect filter functions from being applied to the wrong
type of object.

Note, the problem with filters applies only to those created as callbacks by
the application.  APS handles internally checks the target object type
before applying a filter.

Jeff Brown (x5625).