Qt convert translated text to english

Question

My Qt application supports dynamic translation IE the user can change languages whilst the application is running

Now I have a need to find the English equivalent of a translated string and don't seem to be able to find a way

For example Given QString s = tr("Hello"); I need to be able to get "Hello" from s after translation has taken place.

Has anyone done this before or have any ideas on how (if) it can be achieved

Thanks

Answer 1

In my application I needed to write translated messages to UI and original messages to program log file.

My solution was to create wrapper class that could both translated and original data.

class TS {
public:
    TS(const char* str) {
        init(str);
    }

    TS(const QString& str) {
        init(str.toStdString().c_str());
    }

    TS& arg(const QString& arg1, const bool translate = true) {
        this->orig = this->orig.arg(arg1);
        if (translate) {
            this->tran = this->tran.arg(qApp->translate("", arg1.toStdString().c_str()));
        } else {
            this->tran = this->tran.arg(arg1);
        }
        return *this;
    }

    TS& arg(const int arg1) {
        this->orig = this->orig.arg(arg1);
        this->tran = this->tran.arg(arg1);
        return *this;
    }

    inline const QString& getOrig() const {
        return this->orig;
    }

    inline const QString& getTran() const {
        return this->tran;
    }

private:
    inline void init(const char* str) {
        this->orig = str;
        this->tran = qApp->translate("", str);
    }

private:
    QString orig;
    QString tran;
};

Usage:

void info(const TS& rsMsg);

...

m_rLog.info(QT_TRANSLATE_NOOP("", "Plain Text"));
m_rLog.info(TS(QT_TRANSLATE_NOOP("", "Text with argument : %1")).arg( 123 ));