qmltranslator.h

    #ifndef QMLTRANSLATOR_H
    #define QMLTRANSLATOR_H

    #include <QObject>
    #include <QTranslator>

    class QmlTranslator : public QObject
    {
        Q_OBJECT

    public:
        explicit QmlTranslator(QObject *parent = 0);

    signals:
        // The signal of change the current language to change the interface translation
        void languageChanged();

    public:
        // Translation installation method, which will be available in QML
        Q_INVOKABLE void setTranslation(QString translation);

    private:
        QTranslator m_translator;
    };

    #endif // QMLTRANSLATOR_H