Qt5: MultiLanguage (Q)translator in a Monostate pattern design

I am using Qt5 under Windows 7.
Few days ago somebody requested the app should have the so called "internationalization" feature, i.e. to allow app-messages in more than one language...
So I started with QTranslator class (provided by Qt) and my approach was to use Monostate pattern design in order to implement the requested feature.
For the moment I only have 2 languages (default=Portuguese and English)...
The code is listed below :

#include <QVariant>
#include <QCoreApplication>

#include "translator.h"
#include "settingsmanager.h"


int Translator::currentLanguage = Translator::Language_Unknown;
QTranslator Translator::translator;


// Prefiro "Monostate" porque "Singleton" é muito feio :(
Translator::Translator(QObject * parent) : QObject(parent)
{
    if(currentLanguage == Language_Unknown)
    {
        changeLanguage();
    }
}

Translator::~Translator()
{
}

void Translator::changeLanguage()
{
    SettingsManager settings;
    int language = settings.readSetting("Language").toInt();
    //
    if(language != currentLanguage)
    {
        QString translationFile;
        QCoreApplication::removeTranslator(&translator);
        switch(language)
        {
          case Language_English:
               translationFile.append("language_en.qm");
               translator.load(translationFile);
               QCoreApplication::installTranslator(&translator);
          break;

          default: // Português
               // nada, it's the default
          break;
        }
        currentLanguage = language;
    }
}

Finally, my question is:
Do you think it is a good approach?
Would it be flexible enough to allow me to add other/new languages in the future?
Is there another way (better way) to implement it?