Re: [perl-win32-gui-users] Deprecated Constants

[Octavian R. <ora...@gm...>]

Hi,

Where can we find details about all those constants?
(I hope not on MSDN. :-)

Thanks.

Octavian

----- Original Message ----- 
From: "Robert May" <rob...@us...>
To: "Brian Rowlands (Greymouth High School)" <Row...@gr...>
Cc: <per...@li...>
Sent: Tuesday, June 05, 2007 11:32 PM
Subject: Re: [perl-win32-gui-users] Deprecated Constants


> On 05/06/07, Brian Rowlands (Greymouth High School)
> <Row...@gr...> wrote:
>> I've written my first GUI using The GUI Loft and all works fine except I 
>> get
>> the following warnings:
>>
>> 'use Win32::GUI;' is currently exporting constants into the callers 
>> scope.
>> This functionality is deprecated. Use 'use Win32::GUI();' or list your
>> required exports explicitly instead. at
>> C:/Perl/site/lib/Win32/GUI/Loft/Design.pm line 31
>> C:/Perl/site/lib/Win32/GUI/ToolbarWindow.pm line 23
>> C:/Perl/site/lib/Win32/GUI/BorderlessWindow.pm line 24
>> C:/Perl/site/lib/Win32/GUI/Loft/Cluster.pm line 21
>> C:/Perl/site/lib/Win32/GUI/AdHoc.pm line 31
>> C:/Perl/site/lib/Win32/GUI/Loft/Control/ListView.pm line 22
>> C:/Perl/site/lib/Win32/GUI/Loft/Control/TabStrip.pm line 23
>> C:/Perl/site/lib/Win32/GUI/TabStripGroup.pm line 25
>> C:/Perl/site/lib/Win32/GUI/HyperLink.pm line 6
>>
>> Q1: Can someone advise as to the best way to overcome this issue please 
>> or
>> must I just turn off warnings using:
>>        no warnings 'deprecated';
>
> That's the easiest way, but it only masks the problem.  We're in a
> deprecation cycle, and in one of the next releases Win32::GUI will
> stop exporting the constants by default, and then if any of these
> modules rely on the constants being exported, they will fail.
>
> The best solution is to bug the module authors (and I'm the
> Win32::GUI::HyperLink author) to fix their modules; or better yet
> provide them with patches.
>
>> BTW, SourceForge say to either
>> A) use Win32::GUI(); when not using constants
>> B) explicitly name them if you are using constants
>>
>> Q2: Since constants are being used how do I tell what need to be named?
>
> If all the modules have
>  use strict;
> near the start, then just change the
>  use Win32::GUI;
> line to
> use Win32::GUI qw();
> and re-run you script - it will fail to compile for each constant, and add 
> it
> use Win32::GUI qw(YOUR_CONSTANT_HERE);
>
> If a module doesn't 'use strict' then it's harder, and you'll have to
> look through the code for the constants.
>
> An (easier) alternative is to change each
>  use Win32::GUI;
> line into
>  use Win32::GUI qw(:compatibility_win32_gui)
> which will cause Win32::GUI to keep exporting the 300+ constants into
> the caller's namespace without warning.  But this doesn't really solve
> the problem either ....
>
> Regards,
> Rob.
>
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