[plt-scheme] Henderson picture language in version 4.x?

Jens, I have it working now, thanks.
I think I inherited a modified copy of code when it is far simpler to run
the official distro (now that I understand how to do so :-).

Can I ask, what is important about using "Module"?

Thanks for your prompt help.

Fred


On Mon, Sep 29, 2008 at 3:38 PM, Jens Axel Soegaard
<jensaxel at soegaard.net>wrote:

> Fred G. Martin wrote:
>
>> I am trying to run a version of the Henderson picture language stuff
>> for my students.  It works fine in PLT 3.72 with Textual (MzScheme,
>> includes R5RS).  The images display in the listener.
>>
>> In PLT 4.1, I can load the code when choosing Full Swindle, but
>> instead of images in the listener, I get a lovely "image-snip"
>> message:
>>
>>
>>
>>> (paint (load-painter "einstein"))
>>>
>>>
>> #<image-snip%>
>>
>> Can anyone point me in the right direction?  The code I am running
>> from my colleague Holly Yanco's last version, problem set 4 at
>> http://www.cs.uml.edu/~holly/91.301/ .
>>
>>
> Just curious, are you using features not present in the SICP package
> available on PLaneT?
> (I think they share most of the code)
>
> The following will display Einstein (use the module langauge).
>
> #lang scheme
> (require (planet "sicp.ss" ("soegaard" "sicp.plt" 2 0)))
> (paint (load-painter "einstein"))
>
> The einstein painter happens to be builtin, it was defined like
> this (more or less).
>
> (define einstein (load-painter "einstein.gif"))
>
> See the documentation here:
>
>
> http://planet.plt-scheme.org/package-source/soegaard/sicp.plt/2/0/planet-docs/sicp-manual/index.html
>
>
> --
> Jens Axel Søgaard
>
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