Path: utzoo!attcan!uunet!mcsun!ukc!slxsys!bae-st!mike
From: mike@ste.dyn.bae.co.uk (Mike Heley)
Newsgroups: comp.windows.x
Subject: Re: XView XV_KEY_DATA problem
Message-ID: <1990Sep18.083434.19736@ste.dyn.bae.co.uk>
Date: 18 Sep 90 08:34:34 GMT
Reply-To: mike@ste.dyn.bae.co.uk (Mike Heley)
Organization: British Aerospace (Dynamics), Stevenage
Lines: 27

>  I just ran into a problem with XView's XV_KEY_DATA attribute.  It seems
>  the XView toolkit attaches data to some of the object it creates.
>  This is fine until you happen to choose the same key as the toolkit.
>  I attached a pointer with KEY=1 to a panel which is what XView uses to
>  attach the panel's private structure.

I also hit this problem on moving code from XView 1.0.1 to XView 2.0. 
This code makes extensive use of the XV_KEY_DATA attribute on most of the
objects in XView. The keys started off at 1.

I found that the panel object in XView 2.0 merrily overwrites your valuable
data at KEY=1.

>  Does anyone know what keys are taken by XView and should therefore be
>  avoided.  I could not find a list in the XView Programming Manual from
>  O'Reilly & Associates.

Naahhh! Surely it should just have a bug id! I thought this was for me to use,
not Sun.

--
  Mike Heley 					mike@ste.dyn.bae.co.uk
  British Aerospace Dynamics			+44 438 752432
  Stevenage, UK

  "Schizophrenic? I'm bleedin' Quadrophenic!" - The Who, 1973.
--