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From: kkirksey@eng.auburn.edu (Kenneth B. Kirksey)
Newsgroups: comp.windows.x
Subject: OL Flat Checkbox Widget Woes
Message-ID: <kkirksey.910528220951@lab12.eng.auburn.edu>
Date: 29 May 91 03:09:51 GMT
Organization: Auburn University Engineering
Lines: 114
Nntp-Posting-Host: lab12.eng.auburn.edu


	I'm having a terrible time using the OL flat checkbox widget.  I've
included at the bottom the sample program I wrote to try my hand at using
the flat checkbox.  When I run it as is, it gives me a bus error.  When
I use dbx to trace it, I get the following dump:

	warning: core file read error: address not in data space
	`FCheckBox`DrawLabel() at 0xf7731774
	`FCheckBox`DrawItem() at 0xf7731c10
	`Flat`Redisplay() at 0xf7738698
	SendExposureEvent() at 0xf76d8d8c
	CompressExposures() at 0xf76d8cf8
	`Event`DispatchEvent() at 0xf76d88cc
	DecideToDispatch() at 0xf76d913c
	XtDispatchEvent() at 0xf76d92f4
	XtAppMainLoop() at 0xf76d95cc
	XtMainLoop() at 0xf76d95ac
	main(argc = 1, argv = 0xf7fffc7c), line 81 in 		
	"/home/u2/jstrang/cost/src/FlatTest.c"
	(dbx) 

What am I doing wrong?  This code is pretty much the sample code given on
pages 180-183 of _An Open Look At Unix_.  If anyone out there has had this
problem before, or if anyone can tell me what I'm doing wrong, you would
have my undying gratitude.

					Thanx in advance,
							Ken


--------------Cut Here-------------------------------------------------------

#include <X11/Intrinsic.h>
#include <X11/StringDefs.h>
#include <Xol/OpenLook.h>
#include <Xol/FCheckBox.h>
#include <strings.h>
#include <stdio.h>


static String		itemFields[] = {	
									XtNlabel
									};
#define NUM_ITEM_FIELDS 1

typedef	struct _Item
	{
		String	label;
	} Item;

Arg		args[12];
int		n;

static	Item	items[] = {
						{"CSE100"},
						{"foo"},
						{"foo"},
						{"foo"},
						{"CSE120"},
						{"foo"},
						{"foo"},
						{"foo"},
						{"CSE200"},
						{"foo"},
						{"foo"},
						{"foo"},
						{"CSE2200"},
						{"foo"},
						{"foo"},
						{"foo"}
					};
#define NUM_ITEMS 16	


Widget		toplevel,
			rs_flat_checkbox;


main (argc, argv)
int argc;
char **argv;
{

	/*-----------------------------------------------------------------------+
	| Initialize Top Level Shell											 |
	+-----------------------------------------------------------------------*/
	toplevel = OlInitialize (
						"flatTest",
						"FlatTest",
						NULL,
						0,
						&argc, argv);

	n = 0;
	XtSetArg (args[n], XtNlayoutType, OL_FIXEDCOLS); n++;
	XtSetArg (args[n], XtNmeasure, 4); n++;
	XtSetArg (args[n], XtNitems, items); n++;
	XtSetArg (args[n], XtNnumItems, NUM_ITEMS); n++;
	XtSetArg (args[n], XtNitemFields, itemFields); n++;
	XtSetArg (args[n], XtNnumItemFields, NUM_ITEM_FIELDS); n++;	
	XtSetArg (args[n], XtNlabelJustify, OL_RIGHT); n++;

	rs_flat_checkbox = XtCreateManagedWidget(
					"rs_flat_checkbox",
					flatCheckBoxWidgetClass,
					toplevel,
					args, n);

	/*-----------------------------------------------------------------------+
	| Go To It ...............												 |
	+-----------------------------------------------------------------------*/
	XtRealizeWidget (toplevel);
	XtMainLoop();
}