Path: utzoo!attcan!uunet!tut.cis.ohio-state.edu!rose.cis.ohio-state.edu!cso
From: cso@rose.cis.ohio-state.edu (Dr. Conleth S. O'Connell Jr.)
Newsgroups: comp.windows.x
Subject: Resetting fromHoriz or fromVert resources
Keywords: Form widget
Message-ID: <84330@tut.cis.ohio-state.edu>
Date: 3 Oct 90 15:27:25 GMT
Sender: news@tut.cis.ohio-state.edu
Reply-To: Dr. Conleth S. O'Connell Jr. <cso@rose.cis.ohio-state.edu>
Organization: Ohio State University Computer and Information Science
Lines: 82


Hi there.  
I am basically trying to display an organizational-chart type of tree
with label widgets containing strings connected by lines that show
their dependencies.  I have the line drawing stuff working just fine.

I have 2 problems with the following scenario:

The label widgets are placed in a form widget inside of a viewport
widget inside of a toplevelShell widget.  After the descriptions, I'll
include the declarations of the resources for these widgets.

When I first create/place a label widget, everything works okay, i.e., the
scrollbars are correct.  However, I am pretty printing the tree, e.g.,

	       root
	        |
   -----------------------------
   |            |              |
child1	      child2        child3
                |
	   -----------
	   |         |
	child2.1  child2.2

Pretty printing takes place as such for child2.1 for example:
I want to place myself relative to the rightmost widget that I've seen
so far (in a postfix traversal), in this case - child1.

I get the x and width values of child1
I get the x value of child2.1

if I need to change the x value of child2.1, I make it 10 pixels + the
x and width values of child1.

I move the child2.1 widget with XtMoveWidget.
What I want to do is just reset the fromHoriz resource, but nothing
happens when I do this.  Any ideas?

ANyway, because I am using XtMoveWidget one of two (or both) problems
occur:

1) The scrollbars no longer display the correct percentage nor allow
the user to get to the far right items, but they do before the pretty
printing occurs.

2) The form widget is not resizing correctly because the resources of
the children are not quite right, i.e., the fromHoriz resource.


I've tried lots of combinations but nothing seems to quite work.

Here are the resource declarations for everything but the label
widgets:

   cnt = 0;
   Treeshell  = XtAppCreateShell("Navigation_Tree", "tree",
				 topLevelShellWidgetClass, XtDisplay(Toplevel),
				 args, cnt);
   
   cnt = 0;
   XtSetArg(args[cnt], XtNallowHoriz, True);  cnt++;
   XtSetArg(args[cnt], XtNallowVert,  True);  cnt++;
   XtSetArg(args[cnt], XtNforceBars,  True);  cnt++;
   XtSetArg(args[cnt], XtNwidth,      500);   cnt++;
   XtSetArg(args[cnt], XtNheight,     250);   cnt++;
   treeview = XtCreateManagedWidget("treeview", viewportWidgetClass, 
				    Treeshell, args, cnt);
   
   cnt = 0;
   XtSetArg(args[cnt], XtNdefaultDistance, 10);  cnt++;
   treeframe = XtCreateManagedWidget("treeframe", formWidgetClass,
				     treeview, args, cnt);


Thanks for any explanation!

Con
--
Dr. Conleth S. O'Connell Jr. Department of Computer and Information Science
                                       The Ohio State University
cso@cis.ohio-state.edu        2036 Neil Ave., Columbus, OH USA 43210-1277