X-Recipient: archive-cygwin AT delorie DOT com
X-SWARE-Spam-Status: No, hits=-1.8 required=5.0	tests=AWL,BAYES_00,TW_YG,T_RP_MATCHES_RCVD
X-Spam-Check-By: sourceware.org
Content-Class: urn:content-classes:message
MIME-Version: 1.0
Content-Type: text/plain; charset="iso-8859-1"
Content-Transfer-Encoding: quoted-printable
Subject: RE: ATTN: Perl maintainer - RE: Problem with Perl/Tk and Pixmap
Date: Wed, 22 Dec 2010 13:49:37 -0600
Message-ID: <786EBDA1AC46254B813E200779E7AD360149EE78@srv1163ex1.flightsafety.com>
In-Reply-To: <AANLkTimSKuDLBe4C2eQhcPigTckb+miMWrj_UOqWrfAH@mail.gmail.com>
References: <20101216190751 DOT GA3017 AT ford DOT loewis DOT de>	<iee03u$980$1 AT dough DOT gmane DOT org>	<786EBDA1AC46254B813E200779E7AD360149EE47 AT srv1163ex1 DOT flightsafety DOT com> <AANLkTimSKuDLBe4C2eQhcPigTckb+miMWrj_UOqWrfAH AT mail DOT gmail DOT com>
From: "Thrall, Bryan" <bryan DOT thrall AT flightsafety DOT com>
To: <cygwin AT cygwin DOT com>
X-IsSubscribed: yes
Mailing-List: contact cygwin-help AT cygwin DOT com; run by ezmlm
Precedence: bulk
List-Id: <cygwin.cygwin.com>
List-Unsubscribe: <mailto:cygwin-unsubscribe-archive-cygwin=delorie DOT com AT cygwin DOT com>
List-Subscribe: <mailto:cygwin-subscribe AT cygwin DOT com>
List-Archive: <http://sourceware.org/ml/cygwin/>
List-Post: <mailto:cygwin AT cygwin DOT com>
List-Help: <mailto:cygwin-help AT cygwin DOT com>, <http://sourceware.org/ml/#faqs>
Sender: cygwin-owner AT cygwin DOT com
Mail-Followup-To: cygwin AT cygwin DOT com
Delivered-To: mailing list cygwin AT cygwin DOT com

Reini Urban wrote on 2010-12-22:=20
> 2010/12/22 Thrall, Bryan:
>> Thrall, Bryan wrote on 2010-12-16:
>>> Andrew DeFaria wrote on 2010-12-16:
>>>> =A0 On 12/16/2010 02:07 PM, Johannes v. L=F6wis wrote:
>>>>> I have a Perl/Tk script that is supposed to show a pixmap on the
>>>>> left side of the title bar of the main window. It works on Linux and
>>>>> on a rather old version of Cygwin 1.5. On Cygwin 1.7 (on XP Home and
>>>>> Prof) the following happens:
>>>>>=20
>>>>> $ ./logotest.pl Can't bless non-reference value at
>>>>> /usr/lib/perl5/vendor_perl/5.10/i686-cygwin/Tk/Image.pm line 23. ...
>>>>> Any ideas or suggestions what further information I could provide in
>>>>> order to sort this out?
>>>>>=20
>>>> Reproduced. Note you problem appears to be with Tk::Image, not with
>>>> Cygwin, though you are right in that it works on Linux and complains
>>>> and dies on Cygwin.
>>>>=20
>>>> Interestingly, if you run your program and the Perl debugger (i.e.
>>>> perl -d logtest.pl) then simply type c for continue it works fine.
>>>>=20
>>>> Looking at Image.pm I see that if I break at Image.pm:23 there's a
>>>> "return bless $obj,$package" statement. In the debugger, $obj is
>>>> defined and there's no problem. If, however, I just run this without
>>>> the debugger, but put some print statements in Image.pm, I see that
>>>> $obj is indeed returned from $widget->Tk::image as undefined.
>>>>=20
>>>> This appears to be a Perl/Tk bug.
>>>>=20
>>>> Even stranger! Change your
>>>>=20
>>>> =A0 =A0$mw->Pixmap('logo', -data=3D>$icon);
>>>> to
>>>>=20
>>>> =A0 =A0my $foo $mw->Pixmap('logo', -data=3D>$icon);
>>>> and it works! So you have =A0a work around, and a bug to report.
>>>=20
>>> I also can reproduce the problem.
>>>=20
>>> This behavior reminds me of a perl-Tk packaging bug from last year:
>>>=20
>>> http://www.cygwin.com/ml/cygwin/2009-07/msg00890.html
>>>=20
>>> In fact, /usr/bin/widget seems to be broken again, unless you run it
>>> in the perl debugger:
>>>=20
>>> thrall AT pc1163-8413-xp ~
>>> $ /usr/bin/widget
>>> Can't set -labelFont to `Courier 12 bold' for
>>> Tk::LabEntry=3DHASH(0x1067dac0): unknown option "-labelFont" at
>>> /usr/lib/perl5/vendor_perl/5.10/i686-cygwin/Tk/Derived.pm line 294.
>>>=20
>>> =A0at /usr/lib/perl5/vendor_perl/5.10/i686-cygwin/Tk/Derived.pm line 306
>>> thrall AT pc1163-8413-xp ~ $ cygcheck -cd perl perl-Tk Cygwin Package
>>> Information Package =A0 =A0 =A0 =A0 =A0 =A0 =A0Version cygwin =A0 =A0 =
=A0 =A0 =A0 =A0 =A0 1.7.7-1
>>> perl =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 5.10.1-4 perl-Tk =A0 =A0 =A0 =A0 =
=A0 =A0 =A0804.029-1
>>>=20
>>=20
>> It seems I have unfairly blamed Perl-Tk for these problems; reverting
> to perl-5.10.1-3 fixes both the OP's Pixmap problem and the widget
> problem on my machine.
>=20
> I hear.
> Known problem with certain XS modules.
>=20
> With -4 I had to recompile core and all XS modules and apparently some
> old modules are not binary compatible anymore, although the
> configuration did not change. Only the environment did change.
>=20
> The solution is to recompile the failing XS modules or revert perl back
> to -3
> perl-Tk would need an upgrade against -4.

I'm just glad to have a workaround :)

Thanks for the explanation!
--
Bryan Thrall
FlightSafety International
bryan DOT thrall AT flightsafety DOT com
=A0=20



--
Problem reports:       http://cygwin.com/problems.html
FAQ:                   http://cygwin.com/faq/
Documentation:         http://cygwin.com/docs.html
Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple