Path: utzoo!utgpu!utstat!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!bloom-beacon!ATHENA.MIT.EDU!kit
From: kit@ATHENA.MIT.EDU (Chris D. Peterson)
Newsgroups: comp.windows.x
Subject: Re: Beginner's prblem with widgets
Message-ID: <8902151832.AA07441@DORA.MIT.EDU>
Date: 15 Feb 89 18:32:36 GMT
References: <2200@vu-vlsi.Villanova.EDU>
Sender: daemon@bloom-beacon.MIT.EDU
Organization: The Internet
Lines: 87

The problem you are having it a misunderstanding of what the x and y
resources of a child mean to the parent.  The parent (in this case the form
widget) is free to move his managed children wherever he wants to, and ignore
their x and y locations if he so chooses.  This is what the form is doing. 
In fact what is actually happening is the the label and command widget are on
top of one another.

Your callback is fine, either of the following main's will do the right
thing for you.  They will act differently when resized.  I will leave it 
as an exercise for the reader to figure out why :-).

Case 1:
-------

int main(argc,argv)
     unsigned int argc;
     char **argv;
{
  Widget toplevel,box,label,command;
  Arg arg[25];
  Cardinal n;

  toplevel = XtInitialize("goodbye","Goodbye",NULL,0,&argc,argv);

  box = XtCreateManagedWidget("box",formWidgetClass,toplevel,(Arg *)NULL,0);

  n=0;
  XtSetArg(arg[n],XtNlabel,"Goodbye world"); n++;
  label = XtCreateManagedWidget("label",labelWidgetClass,box,arg,n);

  n=0;
  XtSetArg(arg[n],XtNlabel,"Click and die"); n++;
  XtSetArg(arg[n],XtNfromVert, label); n++;
  command = XtCreateManagedWidget("command",commandWidgetClass,box,arg,n);
  XtAddCallback(command,XtNcallback,Callback,NULL);

  XtRealizeWidget(toplevel);
  XtMainLoop();

}

Case 2:
-------

change the line 

#include <X11/Form.h>

to

#include <X11/Box.h>

int main(argc,argv)
     unsigned int argc;
     char **argv;
{
  Widget toplevel,box,label,command;
  Arg arg[25];
  unsigned int n;

  toplevel = XtInitialize("goodbye","Goodbye",NULL,0,&argc,argv);

  box = XtCreateManagedWidget("box",boxWidgetClass,toplevel,(Arg *)NULL,0);

  n=0;
  XtSetArg(arg[n],XtNlabel,"Goodbye world"); n++;
  label = XtCreateManagedWidget("label",labelWidgetClass,box,arg,n);

  n=0;
  XtSetArg(arg[n],XtNlabel,"Click and die"); n++;
  command = XtCreateManagedWidget("command",commandWidgetClass,box,arg,n);
  XtAddCallback(command,XtNcallback,Callback,NULL);

  XtRealizeWidget(toplevel);
  XtMainLoop();

}

						Chris D. Peterson     
						MIT X Consortium /
						Project Athena 

Net:	kit@athena.mit.edu		
Phone: (617) 253 - 1326			
USMail: MIT - Room E40-321
	77 Massachusetts Ave.		
	Cambridge, MA 02139