QML internationalization does not work

[guidupas]

Hello all!

I am having a problem with the translation of my app developed in QML

The translation file (.qm) is done but it does not work.

Can anyone help me?

Thanks in advance.

Code below:

#include <QGuiApplication>
#include <QQmlApplicationEngine>
 
#include <QTranslator>
 
int main(int argc, char *argv[])
{
    QGuiApplication app(argc, argv);
 
    QTranslator tradutor;
 
    tradutor.load("qml_en", "./");
    app.installTranslator(&tradutor);
 
    QQmlApplicationEngine engine;
    engine.load(QUrl(QStringLiteral("qrc:/main.qml")));
 
    return app.exec();
}

#include <QGuiApplication>
#include <QQmlApplicationEngine>

#include <QTranslator>

int main(int argc, char *argv[])
{
    QGuiApplication app(argc, argv);

    QTranslator tradutor;
    
    tradutor.load("qml_en", "./");
    app.installTranslator(&tradutor);

    QQmlApplicationEngine engine;
    engine.load(QUrl(QStringLiteral("qrc:/main.qml")));

    return app.exec();
}

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[wysota]

What does QTranslator::load() return?

[guidupas]

Sorry, with this config (./) it returns false, but now I changed to (:/) and the qml_en.qm is inserted in resources.

Now it returns true but the translation stills not working.

I tried using 2 ways:

#include <QGuiApplication>
#include <QQmlApplicationEngine>
 
#include <QTranslator>
 
int main(int argc, char *argv[])
{
    QGuiApplication app(argc, argv);
 
    QTranslator tradutor;
 
    tradutor.load("qml_en", ":/");
    app.installTranslator(&tradutor);
 
    QQmlApplicationEngine engine;
    engine.load(QUrl(QStringLiteral("qrc:/main.qml")));
 
    return app.exec();
}

#include <QGuiApplication>
#include <QQmlApplicationEngine>
 
#include <QTranslator>
 
int main(int argc, char *argv[])
{
    QGuiApplication app(argc, argv);
 
    QTranslator tradutor;
 
    tradutor.load("qml_en", ":/");
    app.installTranslator(&tradutor);
 
    QQmlApplicationEngine engine;
    engine.load(QUrl(QStringLiteral("qrc:/main.qml")));
 
    return app.exec();
}

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and

#include <QGuiApplication>
#include <QQmlApplicationEngine>
 
#include <QTranslator>
 
int main(int argc, char *argv[])
{
    QGuiApplication app(argc, argv);
 
    QQmlApplicationEngine engine;
    engine.load(QUrl(QStringLiteral("qrc:/main.qml")));
 
    QTranslator tradutor;
 
    tradutor.load("qml_en", ":/");
    app.installTranslator(&tradutor);
 
    return app.exec();
}

#include <QGuiApplication>
#include <QQmlApplicationEngine>
 
#include <QTranslator>
 
int main(int argc, char *argv[])
{
    QGuiApplication app(argc, argv);

    QQmlApplicationEngine engine;
    engine.load(QUrl(QStringLiteral("qrc:/main.qml")));
 
    QTranslator tradutor;
 
    tradutor.load("qml_en", ":/");
    app.installTranslator(&tradutor);
 
    return app.exec();
}

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[wysota]

You need to install the translator before loading the scene.

[guidupas]

I have tried both ways, before and after. Neither of then works

#include <QGuiApplication>
#include <QQmlApplicationEngine>
 
#include <QTranslator>
 
int main(int argc, char *argv[])
{
    QGuiApplication app(argc, argv);
 
    QQmlApplicationEngine engine;
    engine.load(QUrl(QStringLiteral("qrc:/main.qml")));
 
    QTranslator tradutor;
 
    tradutor.load("qml_en", ":/");
    app.installTranslator(&tradutor);
 
    return app.exec();
}

#include <QGuiApplication>
#include <QQmlApplicationEngine>
 
#include <QTranslator>
 
int main(int argc, char *argv[])
{
    QGuiApplication app(argc, argv);
 
    QQmlApplicationEngine engine;
    engine.load(QUrl(QStringLiteral("qrc:/main.qml")));
 
    QTranslator tradutor;
 
    tradutor.load("qml_en", ":/");
    app.installTranslator(&tradutor);
 
    return app.exec();
}

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#include <QGuiApplication>
#include <QQmlApplicationEngine>
 
#include <QTranslator>
 
int main(int argc, char *argv[])
{
    QGuiApplication app(argc, argv);
 
    QTranslator tradutor;
 
    tradutor.load("qml_en", ":/");
    app.installTranslator(&tradutor);
 
    QQmlApplicationEngine engine;
    engine.load(QUrl(QStringLiteral("qrc:/main.qml")));
 
    return app.exec();
}

#include <QGuiApplication>
#include <QQmlApplicationEngine>
 
#include <QTranslator>
 
int main(int argc, char *argv[])
{
    QGuiApplication app(argc, argv);
 
    QTranslator tradutor;
 
    tradutor.load("qml_en", ":/");
    app.installTranslator(&tradutor);

    QQmlApplicationEngine engine;
    engine.load(QUrl(QStringLiteral("qrc:/main.qml")));
 
    return app.exec();
}

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[wysota]

Are you sure the catalog file is correct for the messages used in the QML file? How did you produce it?

[guidupas]

I think it is. I created it using Lupdate and Lrelease

Here is the TS file

<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE TS>
<TS version="2.0" language="en_US">
<context>
    <name>MainForm</name>
    <message>
        <location filename="MainForm.ui.qml" line="57"/>
        <source>Taxa de juros</source>
        <translation>Interest rate</translation>
    </message>
    <message>
        <location filename="MainForm.ui.qml" line="98"/>
        <source>Diária</source>
        <translation>Daily</translation>
    </message>
    <message>
        <location filename="MainForm.ui.qml" line="98"/>
        <source>Mensal</source>
        <translation>Monthly</translation>
    </message>
    <message>
        <location filename="MainForm.ui.qml" line="98"/>
        <source>Bimestral</source>
        <translation>Bimonthly</translation>
    </message>
    <message>
        <location filename="MainForm.ui.qml" line="98"/>
        <source>Trimestral</source>
        <translation>Quarterly</translation>
    </message>
    <message>
        <location filename="MainForm.ui.qml" line="98"/>
        <source>Semestral</source>
        <translation>Semiannual</translation>
    </message>
    <message>
        <location filename="MainForm.ui.qml" line="98"/>
        <source>Anual</source>
        <translation>Yearly</translation>
    </message>
    <message>
        <location filename="MainForm.ui.qml" line="111"/>
        <source>Calcular</source>
        <translation>Calculate</translation>
    </message>
    <message>
        <location filename="MainForm.ui.qml" line="130"/>
        <source>Conversões (%) </source>
        <translation>Conversions (%)</translation>
    </message>
    <message>
        <location filename="MainForm.ui.qml" line="142"/>
        <source>Ao dia: </source>
        <translation>Per day:</translation>
    </message>
    <message>
        <location filename="MainForm.ui.qml" line="169"/>
        <source>Ao mês: </source>
        <translation>Per month:</translation>
    </message>
    <message>
        <location filename="MainForm.ui.qml" line="196"/>
        <source>Ao bimestre: </source>
        <translation>Per bimester:</translation>
    </message>
    <message>
        <location filename="MainForm.ui.qml" line="223"/>
        <source>Ao trimestre: </source>
        <translation>Per quarter:</translation>
    </message>
    <message>
        <location filename="MainForm.ui.qml" line="250"/>
        <source>Ao semestre: </source>
        <translation>Per semester:</translation>
    </message>
    <message>
        <location filename="MainForm.ui.qml" line="277"/>
        <source>Ao ano: </source>
        <translation>Per year:</translation>
    </message>
</context>
<context>
    <name>main</name>
    <message>
        <location filename="main.qml" line="100"/>
        <location filename="main.qml" line="113"/>
        <location filename="main.qml" line="126"/>
        <location filename="main.qml" line="138"/>
        <location filename="main.qml" line="151"/>
        <location filename="main.qml" line="164"/>
        <source>mais de 10 trilhões</source>
        <translation>Higher then 10 trillion</translation>
    </message>
</context>
</TS>

<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE TS>
<TS version="2.0" language="en_US">
<context>
    <name>MainForm</name>
    <message>
        <location filename="MainForm.ui.qml" line="57"/>
        <source>Taxa de juros</source>
        <translation>Interest rate</translation>
    </message>
    <message>
        <location filename="MainForm.ui.qml" line="98"/>
        <source>Diária</source>
        <translation>Daily</translation>
    </message>
    <message>
        <location filename="MainForm.ui.qml" line="98"/>
        <source>Mensal</source>
        <translation>Monthly</translation>
    </message>
    <message>
        <location filename="MainForm.ui.qml" line="98"/>
        <source>Bimestral</source>
        <translation>Bimonthly</translation>
    </message>
    <message>
        <location filename="MainForm.ui.qml" line="98"/>
        <source>Trimestral</source>
        <translation>Quarterly</translation>
    </message>
    <message>
        <location filename="MainForm.ui.qml" line="98"/>
        <source>Semestral</source>
        <translation>Semiannual</translation>
    </message>
    <message>
        <location filename="MainForm.ui.qml" line="98"/>
        <source>Anual</source>
        <translation>Yearly</translation>
    </message>
    <message>
        <location filename="MainForm.ui.qml" line="111"/>
        <source>Calcular</source>
        <translation>Calculate</translation>
    </message>
    <message>
        <location filename="MainForm.ui.qml" line="130"/>
        <source>Conversões (%) </source>
        <translation>Conversions (%)</translation>
    </message>
    <message>
        <location filename="MainForm.ui.qml" line="142"/>
        <source>Ao dia: </source>
        <translation>Per day:</translation>
    </message>
    <message>
        <location filename="MainForm.ui.qml" line="169"/>
        <source>Ao mês: </source>
        <translation>Per month:</translation>
    </message>
    <message>
        <location filename="MainForm.ui.qml" line="196"/>
        <source>Ao bimestre: </source>
        <translation>Per bimester:</translation>
    </message>
    <message>
        <location filename="MainForm.ui.qml" line="223"/>
        <source>Ao trimestre: </source>
        <translation>Per quarter:</translation>
    </message>
    <message>
        <location filename="MainForm.ui.qml" line="250"/>
        <source>Ao semestre: </source>
        <translation>Per semester:</translation>
    </message>
    <message>
        <location filename="MainForm.ui.qml" line="277"/>
        <source>Ao ano: </source>
        <translation>Per year:</translation>
    </message>
</context>
<context>
    <name>main</name>
    <message>
        <location filename="main.qml" line="100"/>
        <location filename="main.qml" line="113"/>
        <location filename="main.qml" line="126"/>
        <location filename="main.qml" line="138"/>
        <location filename="main.qml" line="151"/>
        <location filename="main.qml" line="164"/>
        <source>mais de 10 trilhões</source>
        <translation>Higher then 10 trillion</translation>
    </message>
</context>
</TS>

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[wysota]

What does the main.qml file look like?