Path: utzoo!utgpu!news-server.csri.toronto.edu!rutgers!usc!samsung!umich!gumby!smaug!cs.hope.edu!jipping
From: jipping@cs.hope.edu (Mike Jipping)
Newsgroups: comp.windows.open-look
Subject: Re: Panel Lists
Message-ID: <1990Dec27.121528.20714@cs.hope.edu>
Date: 27 Dec 90 12:15:28 GMT
References: <22135@mvis1.com>
Sender: news@cs.hope.edu
Reply-To: jipping@cs.hope.edu
Organization: Hope College Dept. of CS
Lines: 40

In article <22135@mvis1.com>, frose@ (Flavio Rose) writes:
>
> a) Is there a way to turn off the user's ability to edit a
> panel list? I want to use the list to display read-only
> information.

Do an "xv_set(the_panel_list, PANEL_READ_ONLY, TRUE, 0);"

> b) Is there a way to prevent the user from selecting anything
> in a panel list? Same motivation as preceding.

The above should perform this, too.  Also make sure you set 
"xv_set(the_panel_list, PANEL_LIST_CHOOSE_NONE, TRUE, 0);"

> c) Is there a way to have a "disembodied" scroll bar in a
> panel, i.e. one without a panel list attached? The idea would
> be to use this scroll bar to let the user scroll information
> that is displayed via the PANEL_BACKGROUND_PROC.

Hmmm...you don't need anything special here.  You can specify how
to handle scrollbar events -- see section 10.4 of the Heller book.  
This way you could attach a scroolbar to the object it was meant to
control, yet use it any ol' way you like.

> With this geometry, if I make the scrolling list be a
> canvas rather than a panel list, then I have to distribute
> the panel items among three separate panels, top, right and
> bottom. (Or do I?)

No.  I've plopped canvases right in the middle of panels before.  As
long as you specify absolute positioning for panel items...things 
work fine.

      Mike Jipping
      Hope College Department of Computer Science
      jipping@cs.hope.edu  (BITNET: JIPPING@HOPE)

      "The 70's are over old man.  Take your mood ring and
       go home."
                                   -- Dana Gould