Xref: utzoo comp.sys.mac.programmer:6511 comp.sys.mac.hypercard:1989
Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!mailrus!csd4.milw.wisc.edu!lll-winken!uunet!munnari!murtoa.cs.mu.oz.au!wcc!tom
From: tom@wcc.oz (Tom Evans)
Newsgroups: comp.sys.mac.programmer,comp.sys.mac.hypercard
Subject: Re: multifinder programming help
Summary: You could try
Message-ID: <322@wcc.oz>
Date: 22 May 89 07:27:15 GMT
References: <2165@litp.ibp.fr>
Organization: Webster Computer, Melbourne, Australia
Lines: 24

In article <2165@litp.ibp.fr>, rjp@litp.ibp.fr (Paul ROY) writes:
> I am rather new to Macintosh programming, and need some help.
> Here is my problem. I want Hypercard and a command language
> interpreter (let us call it A) work in a cooperative way. Namely,
> Hypercard will be a front-end for hypertext documentation and
> questioning the interpreter, and A will be the engine which

HyperCard has a "domenu" command that will call up any menu function
INCLUDING DA's in the Apple Menu. I've played with selecting a 
field (with "1+2+3=" in it), cutting it, calling up the Calculator
and Pasting this in. The Calculator dutifully calculates the answer.
This suggests writing your "engine" as a DA and having it communicate
with HyperCard through the scrap directly. No XCMD's needed.

If this suggests something, please let me know - I've got a similar
application in mind.

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