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localized formating of double on linux [message #19657]

Tue, 30 December 2008 11:33

lokki
Messages: 20
Registered: November 2005

Promising Member

Hello,

I'm porting application developed in UPP on Windows to Linux (using Gentoo 2008.1).

When formating double values (displayed in GridCtrl, in EditDouble), strage output appears. Following converter worked on windows but gives strange results on linux

class ConvertMoney : public ConvertDouble
{
public: ConvertMoney() : ConvertDouble() {Pattern("%2!nl");}
};

e.g. whe we have in database value 1.234, on windows is displayed string "1,23", on linux "1,00". It always changes last two charactes with zeros. Experimenting with converter's pattern gives no acceptable results.

My linux locale is:

LANG=sk_SK.utf8
LC_CTYPE=sk_SK.utf8
LC_NUMERIC="sk_SK.utf8"
LC_TIME="sk_SK.utf8"
LC_COLLATE=C
LC_MONETARY="sk_SK.utf8"
LC_MESSAGES="sk_SK.utf8"
LC_PAPER="sk_SK.utf8"
LC_NAME="sk_SK.utf8"
LC_ADDRESS="sk_SK.utf8"
LC_TELEPHONE="sk_SK.utf8"
LC_MEASUREMENT="sk_SK.utf8"
LC_IDENTIFICATION="sk_SK.utf8"
LC_ALL=

At the begining of code, the laguage is set:

int language = LNGC_('S','K','S','K', CHARSET_UTF8);
SetLanguage(language);

Database is Postgresql 8.3,

Thanks in advance for any clue.

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Re: localized formating of double on linux [message #19659 is a reply to message #19657]

Tue, 30 December 2008 16:25

cocob
Messages: 156
Registered: January 2008

Experienced Member

gtk_init() change libc behaviour according to locale setting.

I use this to remove the problems

setlocale(LC_ALL,"C");

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Re: localized formating of double on linux [message #19660 is a reply to message #19659]

Tue, 30 December 2008 16:59

lokki
Messages: 20
Registered: November 2005

Promising Member

Thanks a lot. Looks like it works now Smile

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Re: localized formating of double on linux [message #19667 is a reply to message #19660]

Sat, 03 January 2009 12:21

lokki
Messages: 20
Registered: November 2005

Promising Member

Hello,

bad news Sad

As posted previously, on Gentoo it works fine (development machine). Now trying to run Gentoo built executable on Ubuntu 10.8 ("production" machine). Same problem, the workaround for Gentoo doesn't work on Ubuntu. Don't know why, because locale on Ubuntu is set to:

LANG=sk_SK.UTF-8
LC_CTYPE="sk_SK.UTF-8"
LC_NUMERIC="sk_SK.UTF-8"
LC_TIME="sk_SK.UTF-8"
LC_COLLATE="sk_SK.UTF-8"
LC_MONETARY="sk_SK.UTF-8"
LC_MESSAGES="sk_SK.UTF-8"
LC_PAPER="sk_SK.UTF-8"
LC_NAME="sk_SK.UTF-8"
LC_ADDRESS="sk_SK.UTF-8"
LC_TELEPHONE="sk_SK.UTF-8"
LC_MEASUREMENT="sk_SK.UTF-8"
LC_IDENTIFICATION="sk_SK.UTF-8"
LC_ALL=

I tried to modify workaround a for whole locale configuration:

...
setlocale(LC_COLLATE,"sk_SK.UTF-8");
setlocale(LC_MONETARY,"sk_SK.UTF-8");
setlocale(LC_MESSAGES,"sk_SK.UTF-8");
...
setlocale(LC_ALL,"C");

But this doesn't help at all.

Thanks for any suggestions

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Re: localized formating of double on linux [message #19668 is a reply to message #19657]

Sat, 03 January 2009 14:57

cocob
Messages: 156
Registered: January 2008

Experienced Member

do you use setlocale(LC_ALL,"C"); after GUI initialization ?

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Re: localized formating of double on linux [message #19669 is a reply to message #19668]

Sat, 03 January 2009 15:09

lokki
Messages: 20
Registered: November 2005

Promising Member

Hello,

I don't know when the GUI is initialised exactly. I set language and locale in first lines of GUI_APP_MAIN. The code looks like this...

GUI_APP_MAIN
{	
	int language = LNGC_('S','K','S','K', CHARSET_UTF8);
	SetLanguage(language);
	setlocale(LC_ALL,"C");
....

edit: So it is executed before the main window is instantiated and run.

[Updated on: Sat, 03 January 2009 15:12]

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Re: localized formating of double on linux [message #19671 is a reply to message #19657]

Sun, 04 January 2009 11:55

cocob
Messages: 156
Registered: January 2008

Experienced Member

I think this is the problem.

In my app i use setLocal in my main window constructor

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Re: localized formating of double on linux [message #19687 is a reply to message #19671]

Mon, 05 January 2009 20:11

lokki
Messages: 20
Registered: November 2005

Promising Member

OK, tried and didn't work.

I'm going to investigate it furher, but I'm very surprised. I wouldn't believe such thigs can happen between two unix systems (running same executable/source).

Looks to me, like I have something set up differently according to localization in Ubuntu (I checked locale variables, but don't know what else to check.. libc version??...)

Thanks for help cocob, in Gentoo it works perfectly (but not Ubuntu).

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Re: localized formating of double on linux [message #19688 is a reply to message #19671]

Mon, 05 January 2009 20:48

lokki
Messages: 20
Registered: November 2005

Promising Member

deleted (duplicate message)

[Updated on: Mon, 05 January 2009 20:49]

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Re: localized formating of double on linux [message #19913 is a reply to message #19657]

Sun, 01 February 2009 18:37

lokki
Messages: 20
Registered: November 2005

Promising Member

Hello,

just to let you know, after experimenting with Ubuntu, I didn't find any solution of this problem. Switching production environment to Open SUSE 11.1 running KDE helped. Probably GNOME on Ubuntu was causing the problem some way, I wasn't able to resolve. Devel Gentoo was running KDE as well, that's why I think this way. Development machine was swithced to Open SUSE afterwards as well.

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