Translations of QMessageBox not work in Qt5.3

Question

I\'m a fan of Qt and update it frequently, Qt5.1->5.2->5.3.

However, the tranalations of Standard buttons like \"Ok\" \"Cancel\" \"Save\" do not work anymore in Qt5.

Answer 1

Starting from Qt5.3 the qt_*.qm is divided into multiple files (qt*_*.qm) and now you have to copy qtbase_*.qm to translation directory and use together.

QString translationsPath(QLibraryInfo::location(QLibraryInfo::TranslationsPath));
QLocale locale = QLocale::system();

QTranslator qtTranslator;
if (qtTranslator.load(locale, "qt", "_", translationsPath))
    a.installTranslator(&qtTranslator);

QTranslator qtBaseTranslator;
if (qtBaseTranslator.load(locale, "qtbase", "_", translationsPath))
    a.installTranslator(&qtBaseTranslator);

Answer 2

I had the same problem and got it to work with an updated translation file. I am not sure if this is the intended behaviour, but my qt_de.qm has a filesize of only 1kB. There is however a file called qtbase_de.qm now (154kB) which seems to do the trick.

Answer 3

This is source of qt_ru:

   <?xml version="1.0" encoding="utf-8"?>
    <!DOCTYPE TS>
    <TS version="2.0" language="ru">
    <dependencies>
        <dependency catalog="qtbase_ru"/>
        <dependency catalog="qtscript_ru"/>
        <dependency catalog="qtquick1_ru"/>
        <dependency catalog="qtmultimedia_ru"/>
        <dependency catalog="qtxmlpatterns_ru"/>
    </dependencies>
    </TS>

Therefore, it is necessary to deploy application with all these translation files. If at least one file is missing, the translation qt_ru will not load.