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obeying the sheet protocol [correction]
[Oops, oversimplified the code in that last one.]
CLIM 2.0
Lispworks 3.2b and Allegro 4.2
When I execute code that sort of looks like this:
(labels ((map-over (sheet)
(when (sheetp sheet)
(dolist (kid (sheet-children sheet))
<...some code...>
(map-over kid)))))
(map-over (frame-top-level-sheet *application-frame*)))
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
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