Re: Dialog.List not extensible

From: [at]} <CFB>
Date: Sun, 18 Nov 2007 11:26:10 +1030

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Hi Josef,

I do not have an answer to your question but you might find interesting a
few lively discussions on the pros and cons of extensibility that appeared
in this mailing list back in 2004:

  "An extended discussion of extensibility"

  "Eliminate EXTENSIBLE types?"

  "Procedure types and An extended discussion of extensibility"

http://www.lrz-muenchen.de/~BlackBox/archive/2004/subject.html

Also worth reading is section 3 'Design Practices' in the Blackbox Help
which talks about the practices, approaches, and patterns that have been
followed in the design of the BlackBox Component Framework.

Chris Burrows
CFB Software
http://www.cfbsoftware.com/gpcp

> -----Original Message-----
> From: BlackBox [mailto:BLACKBOX{([at]})nowhere.xy
> Josef Templ
> Sent: Saturday, 17 November 2007 8:03 PM
> To: BLACKBOX{([at]})nowhere.xy
> Subject: Dialog.List not extensible
>
> Hi Everybody!
>
> I have noticed that Dialog.List is not an extensible record.
> May be there are good reasons from the implementation point,
> but as a user I want to be able to extend it in order
> to connect the list with appropriate application objects.
>
> Without the ability to extend Dialog.List an application needs to
> maintain auxiliary data structures (for mapping the list of values
> to application objects) outside the Dialog.List structure, which
> destroys any program structure.
>
> The only work around I have found so far is to wrap a Dialog.List
> in an enclosing record, but this implies that the resource file
> has to use a different link field.
>
> Any suggestions?
> OMS: Why is Dialog.List none extensible?
>

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Received on Sun Nov 18 2007 - 01:56:10 UTC