Hello,<br><br>Am I misunderstanding something, or should &quot;model-object&quot; in this error be replaced with &quot;model&quot;?<br><br>&quot;If no superclass of X inherits directly or indirectly from model-object, model-object must be included as a direct super-class in the defmodel form for X&quot;<br>

<br>Btw, cells seems very intuitive way to do GUI programming. I am new to both Lisp and GUI programming. The first thing I thought after getting mingled in some complicated callback hierarchies was that there must be a better way in Lisp to do this. And luckily I found cells. Thanks.<br>
<br>Best regards,<br><br>Mikko Ahonen<br>
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