Path: utzoo!attcan!uunet!husc6!uwvax!rutgers!apple!dan
From: dan@Apple.COM (Dan Allen)
Newsgroups: comp.sys.mac.hypercard
Subject: Re: Creating very large XCMDs
Message-ID: <16642@apple.Apple.COM>
Date: 5 Sep 88 23:49:24 GMT
References: <4695@saturn.ucsc.edu>
Reply-To: dan@apple.com.UUCP (Dan Allen)
Organization: Apple Computer Inc, Cupertino, CA
Lines: 18

In article <4695@saturn.ucsc.edu> sirkm@ssyx.ucsc.edu (Greg Anderson) writes:
>I am working on an XCMD that uses very large libraries.  If I tried to
>link it all into one segment, it would be > 32K, & thus would not fit inside
>a code resource.
>
>I could possibly split up the libraries into XCMDs of their own and use
>HyperCard callbacks to interface them at runtime.  Is there a more elegant
>solution?

What are you trying to do?  For many applications it is better to keep
the XCMD small and have it act as a funnel for requests to a DRVR.  The
XCMD would send the requests to a DRVR that could live in the system
heap or wherever.  The DRVR would be the grand central station.  This
method is especially good for controlling various devices like video
disk players, CD-ROM drives, etc.

Dan Allen
Apple Computer