How to translate the buttons in qmessagebox?

Question

I have a QMessageBox like this:

QMessageBox::question(this, tr(\"Sure want to quit?\"), 
    tr(\"Sure to quit?\"), QMessageBox::Yes | QMessageB         


        

Answer 1

I wrote a special QMessageBoxEx class for this issue.

// init once your button texts
QMessageBoxEx::setCustomTextForButton(QMessageBox::Yes, "Да");
QMessageBoxEx::setCustomTextForButton(QMessageBox::No, "Нет");

// example usage
if (QMessageBoxEx::question(this, "Внимание", "Ошибка", QMessageBox::Yes | QMessageBox::No) == QMessageBox::Yes)
{
   // OK
}

// header

class QMessageBoxEx : public QMessageBox
{
private:

    static QMap m_customButtonNames;

protected:

    static void setCustomTextForButtons(QMessageBoxEx &msgBox);

public:

    QMessageBoxEx(QWidget *parent);

    static void setCustomTextForButton(QMessageBox::StandardButton button, const QString &text);

    static QMessageBox::StandardButton critical(QWidget *parent, const QString &title, const QString &text, QMessageBox::StandardButtons buttons = QMessageBox::Ok, QMessageBox::StandardButton defaultButton = NoButton);
    static QMessageBox::StandardButton information(QWidget *parent, const QString &title, const QString &text, QMessageBox::StandardButtons buttons = QMessageBox::Ok, QMessageBox::StandardButton defaultButton = NoButton);
    static QMessageBox::StandardButton question(QWidget *parent, const QString &title, const QString &text, QMessageBox::StandardButtons buttons = QMessageBox::StandardButtons(QMessageBox::Yes | QMessageBox::No), QMessageBox::StandardButton defaultButton = QMessageBox::NoButton);
    static QMessageBox::StandardButton warning(QWidget *parent, const QString &title, const QString &text, QMessageBox::StandardButtons buttons = QMessageBox::Ok, QMessageBox::StandardButton defaultButton = NoButton);

};

// implementation

QMap QMessageBoxEx::m_customButtonNames;

void QMessageBoxEx::setCustomTextForButton(QMessageBox::StandardButton button, const QString &text)
{
    if (m_customButtonNames.contains(button))
        m_customButtonNames.erase(m_customButtonNames.find(button));

    m_customButtonNames[button] = text;
}

void QMessageBoxEx::setCustomTextForButtons(QMessageBoxEx &msgBox)
{
    if (m_customButtonNames.size())
    {
        QMessageBox::StandardButtons buttons = msgBox.standardButtons();

        for (auto button : m_customButtonNames.keys())
        {
            if (buttons & button)
            {
                msgBox.setButtonText(button, m_customButtonNames[button]);
            }
        }
    }
}

QMessageBox::StandardButton QMessageBoxEx::critical(QWidget *parent, const QString &title, const QString &text, QMessageBox::StandardButtons buttons, QMessageBox::StandardButton defaultButton)
{
    QMessageBoxEx msgBox(parent);

    msgBox.setIcon(QMessageBox::Critical);
    msgBox.setWindowTitle(title);
    msgBox.setText(text);
    msgBox.setStandardButtons(buttons);
    msgBox.setDefaultButton(defaultButton);

    setCustomTextForButtons(msgBox);

    return (QMessageBox::StandardButton)msgBox.exec();
}

QMessageBox::StandardButton QMessageBoxEx::information(QWidget *parent, const QString &title, const QString &text, QMessageBox::StandardButtons buttons, QMessageBox::StandardButton defaultButton)
{
    QMessageBoxEx msgBox(parent);

    msgBox.setIcon(QMessageBox::Information);
    msgBox.setWindowTitle(title);
    msgBox.setText(text);
    msgBox.setStandardButtons(buttons);
    msgBox.setDefaultButton(defaultButton);

    setCustomTextForButtons(msgBox);

    return (QMessageBox::StandardButton)msgBox.exec();
}

QMessageBox::StandardButton QMessageBoxEx::question(QWidget *parent, const QString &title, const QString &text, QMessageBox::StandardButtons buttons, QMessageBox::StandardButton defaultButton)
{
    QMessageBoxEx msgBox(parent);

    msgBox.setIcon(QMessageBox::Question);
    msgBox.setWindowTitle(title);
    msgBox.setText(text);
    msgBox.setStandardButtons(buttons);
    msgBox.setDefaultButton(defaultButton);

    setCustomTextForButtons(msgBox);

    return (QMessageBox::StandardButton)msgBox.exec();
}

QMessageBox::StandardButton QMessageBoxEx::warning(QWidget *parent, const QString &title, const QString &text, QMessageBox::StandardButtons buttons, QMessageBox::StandardButton defaultButton)
{
    QMessageBoxEx msgBox(parent);

    msgBox.setIcon(QMessageBox::Warning);
    msgBox.setWindowTitle(title);
    msgBox.setText(text);
    msgBox.setStandardButtons(buttons);
    msgBox.setDefaultButton(defaultButton);

    setCustomTextForButtons(msgBox);

    return (QMessageBox::StandardButton)msgBox.exec();
}

QMessageBoxEx::QMessageBoxEx(QWidget *parent) : QMessageBox(parent)
{

}

Gist: https://gist.github.com/kleuter/81a75a50e60a75aa0370a66ededc0c31