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CLOS Classes and Presentation Types
There seems to be a problem with CLOS classes that are also defined as
presentation types. Presentation actions seem only to be available for
instances of the class itself and for instances of subclasses that had
instances at the time the presentation action was defined.
(defclass class-x () ())
(defclass class-y (class-x) ())
(defclass class-z (class-x) ())
(scl:define-presentation-type class-x (())
(class-x t :gesture :select)
This example shows the problem.
(scl:present (make-instance 'class-x) 'class-x) works fine
(scl:present (make-instance 'class-y) 'class-y) works fine
(scl:present (make-instance 'class-z) 'class-z) doesn't work, the presentation
action is not available for the presentation
Did anybody notice this behavior? Is there a workaround?