Path: utzoo!mnetor!uunet!lll-winken!ubvax!vix
From: vix@ubvax.UB.Com (Paul Vixie)
Newsgroups: comp.windows.x
Subject: VPaned widget acts strangely ... or so it seems to me ...
Message-ID: <6565@ubvax.UB.Com>
Date: 26 Mar 88 01:53:21 GMT
Reply-To: vix@ubvax.UUCP (Paul Vixie)
Organization: Ungermann-Bass Enterprises
Lines: 70


Since the VPaned widget docs talk about its ability to resize itself when
new panes are added after the VPane has been (managed,mapped,realized), I
decided to try a different scheme for the menus I'm trying to build:

	Shell
		VPaned
			Box
				Command
				Command
				...
			Box
				Command
				Command
				...
			Box
				Command
				Command
				...

The Box-full-of-Commands are added one-by-one as items are selected from
menus; the result is supposed to be a new pane for each menu, growing down-
ward.  This works perfectly for the first two menus.  The top one, when
created, gets a VPane border beneath it with no resize knob since it's the
only pane.  I've arranged things so that when a command is selected from
this menu, another menu is added to the VPane, causing a resize knob to
appear on the pane border seperating it from the top menu, and a border to
appear below the second menu (with a resize knob).  All fine.

	==============================
	File Edit Quit				(no this is not the real menu)
	---------------------------X--		(X = resize knob)
	Add Change Delete quit
	---------------------------X--

						(blank space)

	==============================

Then I select something on this second menu, which causes a third menu to be
created and added to the VPaned widget.  This is where odd things happen.

	==============================
	File Edit Quit				(no this is not the real menu)
	---------------------------X--		(X = resize knob)
	---------------------------X--
	Planes Trains Automobiles		(third menu, just added)
	---------------------------X--

						(blank space)

	==============================

Note that the second menu is now invisible.  The resize knobs are so adjacent
that they touch.  Grabbing the resize knob and moving it downward, I can make
the second menu visible -- so I know (a) that it's still there, and (b) that
the insertion_order is correct and that the third menu was added to the end
of the VPaned child list rather than inserted in the middle somewhere.

In a previous note, I asked this list for patches to the Xt for Suns -- noone
has volunteered so far.  Perhaps this odd behaviour is caused by one such bug.
I don't have any non-Sun server or client machines to try this on, so I don't
really know how to approach it.

Maybe there's an argument to XtCreateManagedWidget for the submenus that I
need but don't know about.  Enlightenment appreciated.
-- 
Paul Vixie
Consultant        Work: 408-562-7798    vix@ub.com    vix%ubvax@uunet.uu.net
Ungermann-Bass    Home: 415-647-7023    {amdahl,ptsfa,pyramid,uunet}!ubvax!vix
Santa Clara, CA              <<I do not speak for Ungermann-Bass>>