RE: [wxperl-users] Re: wxValidator available via wxPerl #2
Dear Mattia, Thanks - this works a treat! I was so close... Anyway, now I'm up and running. I had noticed the 'Attempt to free unreferenced...' error - will await a fix. Now that I've got things working, what do you suggest/would you like? I feel that validators are the way to go when it comes to transferring data to/from controls (rather than explicit GetValue/SetValue calls all over the place) - I have had to implement a similar concept (though not as elegant) in a very large Perl/Tk application which we have developed. I see that you think we should create Perl versions of wxGenericValidator and wxTextValidator - I am happy to do this and contribute them to the project. If I do this, do you (or anyone else on the list) have ideas on how we should name/implement them? What 'better interface' can you envisage for a Perl-based Validator? I have not examined the native wxGenericValidator and wxTextValidator yet, so am interested in your thoughts. Regards, James > -----Original Message----- > From: Mattia Barbon [mailto:mbarbon@dsi.unive.it] > Sent: 17 December 2001 22:22 > To: wxperl-users@lists.sourceforge.net > Subject: RE: [wxperl-users] Re: wxValidator available via wxPerl >=20 >=20 > > Dear Mattia (or others, if they can help), > > I've been delving into how to use wxValidators, and I think=20 > I understand the > > concept (and I like it!). > >=20 > > However, I'm having real trouble deriving my own validator (called, > > unimaginitively, myValidator) from Wx::PlValidator. > >=20 > > >From the wxWindows documentation, all validators must=20 > implement a Clone > > method. I have tried implementing a Clone method, which I=20 > can see getting > > called, but myValidator's Validate, TransferFromWindow, and=20 > TransferToWindow > > never seem to get called. > >=20 > > Here is my code (with the methods apart from Clone doing=20 > nothing useful > > apart from printing to STDOUT): > >=20 > > VVVVVVVVVVVVVVVVVVVV > > use Wx; > >=20 > > package myValidator; > This is OK ( in fact the sample I sant uses this code ) >=20 > > ^^^^^^^^^^^^ > >=20 > =20 > > Could you post a very simple example of how to create a=20 > validator class in > > Perl, and how to create a frame which uses it, please? > Here is your example ( modified minimal sample, use Help->About to > show the validator dialog ) >=20 > I am getting a "Attempt to free unreferenced scalar at=20 > C:/Developement/wxPerl/wxPerl/blib/lib/Wx.pm line 61.",=20 > which I was not getting when I first tested Validators. > It is obviously something I am doing wrong with reference > counting in wxPerl; will fix. >=20 > A caveat: do not use a validator after you did > ->SetValidator(); for implementation reasons, > once you do ->SetValidator() it is no more valid. >=20 > Regards > Mattia >=20 >=20 >=20 >=20
james
perl.wxperl.users
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Hi everyone, I want to use Perl2Exe to package up my application, but am having problems. Perl2Exe runs fine, and produces a .exe file, but when I run it, I get the following errors: Compilation failed in require at C:\MY DOCUMENTS\PROG\TFC\PERL_SRC\TFFC.EXE line 10. BEGIN failed--compilation aborted at C:\MY DOCUMENTS\PROG\TFC\PERL_SRC\TFFC.EXE line 10. Line 10 is my 'use Wx' line. Has anyone else succeeded in using Perl2Exe with wxPerl? Thanks, James
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jlavery
1/23/2014 1:01:01 AM
> Dear Mattia,
> Thanks - this works a treat!
>
> I was so close... Anyway, now I'm up and running.
>
> I had noticed the 'Attempt to free unreferenced...' error - will await a
> fix.
I think it is a Perl bug: putting an (empty) DESTROY in Wx::PlVlaidator make it
disappear.
The strange thing is that base classes do not have DESTROY methods
( so it can't be the empty one masking a base class' DESTROY ),
but if you put UNIVERSAL::can( $_[0], 'SUPER::DESTROY' ); in the
previously empty DESTROY {}, this triggers the error.
Regards
Mattia
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mbarbon
1/23/2014 1:01:01 AM
On Tue, 18 Dec 2001, James Lavery wrote:
>Dear Mattia,
>Thanks - this works a treat!
>
>I was so close... Anyway, now I'm up and running.
>
>I had noticed the 'Attempt to free unreferenced...' error - will await a
>fix.
>
>Now that I've got things working, what do you suggest/would you like? I
>feel that validators are the way to go when it comes to transferring
>data to/from controls (rather than explicit GetValue/SetValue calls all
>over the place) - I have had to implement a similar concept (though not
>as elegant) in a very large Perl/Tk application which we have developed.
>
>I see that you think we should create Perl versions of
>wxGenericValidator and wxTextValidator - I am happy to do this and
>contribute them to the project. If I do this, do you (or anyone else on
>the list) have ideas on how we should name/implement them? What 'better
>interface' can you envisage for a Perl-based Validator? I have not
>examined the native wxGenericValidator and wxTextValidator yet, so am
>interested in your thoughts.
wxTextValidator is OK for Perl, while wxGenericValidator does
1 - use overloading
wxGV construtor takes one of a int/bool/string/integer array
(C++) pointer ( think Perl references ), but in Perl
int/string/bool map to scalar.
2 - there is no NumericValidator ( or whatever you want to call it )
one that does a text->number conversion with error
checking/bound checking, for intehers and floats
3 - I don't like wxGV because it tries to do
validation for all controls, doing the Right Thing, but this
sometimes is not possible ( like: for comboboxes
if you pass a string, it returns the selected string,
if you pass an integer it returns the index of the selected string in
the combobox, but if I want the selected string as a number
( because my combobox contains, say, 1,2,3,4,6,12 ) I need
a custom validator ( this relates to the lack of a NumericValidator )
BTW this example does not fit with Perl ( because in Perl a
number "is" a string, but I hope you get the idea )
But since I do not use validator that much, it's up to you to decide
Thanks!
Mattia
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mbarbon
1/23/2014 1:01:01 AM
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Mattia, Thanks - will await the next build/release. James > -----Original Message----- > From: Mattia Barbon [mailto:mbarbon@dsi.unive.it] > Sent: 11 December 2001 14:26 > To: James Lavery > Cc: wxperl-users@lists.sourceforge.net > Subject: RE: [wxperl-users] Using wxConfig in wxPerl >=20 >=20 > > Dear Mattia, > > I don't think there is a Wx::Config, either (at least, not on my > > machine)! =20 > Well, you are right ( and why was I so sure I had wrapped > wxConfig? ); Now in the todo for the next version. >=20 > &g...
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Hello, > I tried to compile wxPerl CVS against 2.6.0 and I got the = errors as below. > > I am compiling on WinXP using MSVC6. Should this = work? Have others > successfully compiled? Yes, but with MSVC 5 and= GCC (various versions), not MSVC 6. Are you up to date with MSVC servic= e packs? > C:\Perl\bin\perl.exe C:\Perl\lib\ExtUtils/xsubpp = -noprototypes > -nolinen <snip> > Grid.c(390) : warning C4189: 'CLAS= S' : local variable is initialized but not > referenced > Grid.c(464) := fatal error C1001: INTERNA...
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