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From: marbru@attc.UUCP (Martin Brunecky)
Newsgroups: comp.windows.x
Subject: Re: Help on Motif builders
Message-ID: <951@attc.UUCP>
Date: 3 Jan 91 17:27:56 GMT
References: <9101030322.AA07340@gh.sei.cmu.edu>
Reply-To: marbru@auto-trol.UUCP (Martin Brunecky)
Organization: Auto-trol Technology, Denver
Lines: 32

In article <9101030322.AA07340@gh.sei.cmu.edu> Erik.Hardy@sei.cmu.EDU writes:
>
>then Martin Brunecky <marbru@auto-trol.com> wrote:
>
>>   The application writer must know/understand enough about the principles
>>   of the Xt user interface methods/style/operation mode to make the
>>   user interface writer's job even possible.
>
>In a word, no. The AW need know nothing about the underlying technology, be
>it Xt, CORE, Xlib, PHIGS, or whatever.
>
     I can't disagree more. The event driven model of Xt based application
     is so significantly different from the old-style, solicited-input
     approach, that an application writer MUST be aware of it.
     
     There are lots of applications with graphical user interface based
     on Apollo GPR, Sun's Pixrect, DEC UIS etc etc. Convreting, twisting
     and munging those applications to run under the X event driven model
     is a nightmare. Just because the *application* code was not *designed*
     for an event-driven user interface.

     You may suggest that a UI living as a separate process can solve the
     problem. May be - for the "ls" command. But my CAD/CAM applications are
     heavily graphics oriented. The graphics application design *must*
     be aware of the new interaction model, otherwise it is doomed to cause
     an enormous amount of pain.

-- 
=*= Opinions presented here are solely of my own and not those of Auto-trol =*=
Martin Brunecky                           {...}sunpeaks!auto-trol!marbru
(303) 252-2499                        (sometimes also:  marbru@auto-trol.COM )
Auto-trol Technology Corp. 12500 North Washington St., Denver, CO 80241-2404