Unable to use new QTranslator::load() (Qt 4.8)

DerekDomino

Hello,

With Qt 4.8.0, there's a new overload for QTranslator::load():
http://doc.qt.nokia.com/main-snapshot/qtranslator.html#load-2

It is documented as follows:
@bool QTranslator::load ( const QLocale & locale, const QString & filename, const QString & prefix = QString(), const QString & directory = QString(), const QString & suffix = QString() )@
With a short example:

bq. For example, an application running in the locale with the following ui languages - "es", "fr-CA", "de" might call load(QLocale::system(), "foo", ".", "/opt/foolib", ".qm"). load() would replace '-' (dash) with '_' (underscore) in the ui language and then try to open the first existing readable file from this list: [...]

So I tried with the following lines:
@
...
QApplication app(argc, argv);

QTranslator theTranslator;
theTranslator.load(QLocale::system(), "theTranslationFile", "_", "/the/path/to/the/translation/files");
app.installTranslator(&theTranslator);

QDebug() << QLocale::system().name();
...

@
and set 2 different translation files: one for french and one for canadian french (through ts files):
@theTranslationFile_fr.qm
theTranslationFile_fr_CA.qm
@

Then I set the shell variable to LANG=fr_CA and run the application.

The QDebug() command outputs "fr_CA" while the text displayed on the widgets comes from the ...fr.qm file, not from fr_CA.qm files :-(

When loading the translator via the following, it works:
@
theTranslator.load("theTranslationFile_"+QLocale::system().name(),"/the/path/to/the/translation/files");
@

Is something above bad?

I'm using MacOS X 10.7

Cheers

dbzhang800

Hi,

Can you paste the result of QLocale::uiLanguages () ?

Thanks

DerekDomino

Hi 1+1=2 ;-)

LANG=fr_BE: @
QLocale::system().uiLanguages() : ("en", "ja", "fr", "de", "es", "it", "pt", "pt_PT", "nl", "sv", "nb", "da", "fi", "ru", "pl", "zh-Hans", "zh-Hant", "ko", "ar", "cs", "hu", "tr")
QLocale::system().name() : "fr_BE"
@

LANG=fr_FR: @
QLocale::system().uiLanguages() = ("en", "ja", "fr", "de", "es", "it", "pt", "pt_PT", "nl", "sv", "nb", "da", "fi", "ru", "pl", "zh-Hans", "zh-Hant", "ko", "ar", "cs", "hu", "tr")
QLocale::system().name() = "fr_FR"
@

LANG=fr_CA: @
QLocale::system().uiLanguages() = ("en", "ja", "fr", "de", "es", "it", "pt", "pt_PT", "nl", "sv", "nb", "da", "fi", "ru", "pl", "zh-Hans", "zh-Hant", "ko", "ar", "cs", "hu", "tr")
QLocale::system().name() = "fr_CA"
@

The output of uiLanguages() is related with the Mac OS System Preferences > Language & Text > Language order.

dbzhang800

It's clear now,

As
@
bool QTranslator::load ( const QLocale & locale, const QString & filename, const QString & prefix = QString(), const QString & directory = QString(), const QString & suffix = QString() )
@
will use the list returned by QLocale::uiLanguages (), but fr_CA, does belong to the list.

DerekDomino

Indeed, I should read the doc with eyes open ;-)

This raises the following question: how to set manually fr_CA as the first language in this list from the shell? E.g. for testing purpose.