Path: utzoo!attcan!uunet!spool.mu.edu!sdd.hp.com!zaphod.mps.ohio-state.edu!ncar!ico!attc!marbru
From: marbru@attc.UUCP (Martin Brunecky)
Newsgroups: comp.windows.x.motif
Subject: Re: Table Widget
Message-ID: <1207@attc.UUCP>
Date: 2 Mar 91 19:03:46 GMT
References: <7378@aspect.UUCP> <21337@oolong.la.locus.com> <ED.91Jan28200133@lvw6.lvw.loral.com> <1328@mti.mti.com> <1047@attc.UUCP> <1353@mti.mti.com>
Reply-To: marbru@auto-trol.UUCP (Martin Brunecky)
Organization: Auto-trol Technology, Denver
Lines: 36

In article <1353@mti.mti.com> adrian@mti.UUCP (Adrian McCarthy) writes:
>
>According to the DEC support person I spoke with, it was OSF, not DEC, that
>decided the _Xm stuff should be private and undocumented.  (Although I'm sure
>it didn't bother the DEC folks either.)  He quoted me several sentences
>from an OSF statement which said that binary upward compatibility was
>considered more important than support for the undocumented routines.  The
>statement went on to say that not only are the _Xm routines likely to change
>in future versions of Motif, but there were several such changes of
>significance between versions 1.0 and 1.1.

 True....
>
>I argued that a few of the _Xm routines were declared in non-private header
>files (traversal.h).  The DEC rep said that this was probably an oversight and
>that the definitions would probably be moved to private header files in a
>future release.
>

    So there goes Motif's "openness" on DEC. They alreade have decided
    to sacrifize widget set extensibility to binary compatibility.
    
    As some _Xm routines will change ( disappear etc. ), this would make
    DEC shareable images incompatible between Motif releases.

    However, without the _Xm routines you can't even *think* of writing
    a subclass of a Motif widget ( well, I mean a real widget, not a demo
    used as a proof that subclassing is possible ).

    Thank you, Digital.

-- 
=*= 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