obeying the sheet protocol

• To: clim@BBN.COM
• Subject: obeying the sheet protocol
• From: "David L. Westbrook" <westy%earhart@cs.umass.edu>
• Date: Wed, 19 Jan 1994 17:13:54 -0500
• Reply-To: westy@freya.cs.umass.edu

CLIM 2.0
Lispworks 3.2b and Allegro 4.2

When I execute this code:

(when (sheetp (frame-top-level-sheet *application-frame*))
  (dolist (kid (sheet-children window))
   ...))

I get errors similar to this:

Error: No applicable methods for #<STANDARD-GENERIC-FUNCTION SHEET-CHILDREN 10A4F9B0>
       with args (#<SCROLL-BAR-PANE :VERTICAL 100A3368>)

Is there some other way to insure that an object obeys the sheet protocol?

David L. Westbrook
westy@cs.umass.edu
  

• obeying the sheet protocol
• From: Scott McKay <swm@lyra.mystech.com>

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