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From: envbvs@epb2.lbl.gov (Brian V. Smith)
Newsgroups: comp.windows.x
Subject: Re: bug in XtGetApplicationResources
Keywords: incorrect parsing of resources on sun 4
Message-ID: <5062@helios.ee.lbl.gov>
Date: 13 Mar 90 00:13:03 GMT
References: <5061@helios.ee.lbl.gov>
Sender: usenet@helios.ee.lbl.gov
Reply-To: envbvs@epb2.lbl.gov (Brian V. Smith)
Organization: lbl
Lines: 61
X-Local-Date: 12 Mar 90 16:13:03 PST

I just posted info about a bug in XtGetApplicationResources, to which
I have found a "solution".

The problem was that I had initialized my "landscape" variable to 1
before calling XtGetApplicationResources and that was preventing
it (somehow) from setting it to 0 when I gave the -portrait option.

If the variable starts as 0 then everything is fine, i.e. if the
user specifies -portrait then landscape = 0, and if -portrait is NOT
specified landscape = 1.

Why does it matter if the variable has a non-zero value to start?
Again, this is only a problem on a sun4 (running sunos4.0) and not
a problem on a Vaxstation (Ultrix 3.0) or DECstation 3100 (Ultrix 3.0)

Here is the program again:

#include <stdio.h>
#include <X11/Intrinsic.h>
#include <X11/StringDefs.h>

static int      true = True;
static int      false = False;

int     landscape = 1; /******  PROBLEM BECAUSE OF THIS  *****/
int     RHS_PANEL = 0;

static XtResource application_resources[] = {
        {XtNjustify, XtCJustify, XtRBoolean, sizeof(int),
                 (Cardinal)&RHS_PANEL, XtRBoolean, (caddr_t)&false},
        {"landscape", XtCOrientation, XtRBoolean, sizeof(int),
                 (Cardinal)&landscape, XtRBoolean, (caddr_t)&true},
};

static XrmOptionDescRec options[] =
{
        {"-right", ".justify", XrmoptionNoArg, "True" },
        {"-portrait", ".landscape", XrmoptionNoArg, "False"},
};


main(argc,argv)
        int             argc;
        char            *argv[];
{
        Widget tool;

        tool = XtInitialize("fig", "Fig", options, XtNumber(options),
                &argc, argv);

        XtGetApplicationResources(tool, 0, application_resources,
                                   XtNumber(application_resources), NULL, 0 );

        fprintf(stderr,"landscape = %d, justify = %d\n",landscape,RHS_PANEL);
        }


_____________________________________
Brian V. Smith    (bvsmith@lbl.gov)
Lawrence Berkeley Laboratory
I don't speak for LBL, these non-opinions are all mine.