qt-everywhere-src-5.14.1/qtbase/tests/manual/qlocale/languages.cpp

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** This file is part of the test suite of the Qt Toolkit.
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#include "languages.h"

#include <QLabel>
#include <QListWidget>
#include <QHBoxLayout>

LanguagesWidget::LanguagesWidget()
{
    QVBoxLayout *l = new QVBoxLayout(this);

    languagesLabel = new QLabel("Preferred languages:");
    languagesList = new QListWidget;

    l->addWidget(languagesLabel);
    l->addWidget(languagesList);

    localeChanged(QLocale());
}

void LanguagesWidget::localeChanged(QLocale locale)
{
    languagesList->clear();
    foreach (const QString &lang, locale.uiLanguages()) {
        QListWidgetItem *item = new QListWidgetItem(lang, languagesList);
        QLocale l(lang);
        if (l.language() != QLocale::C) {
            QString language = QLocale::languageToString(l.language());
            QString country = QLocale::countryToString(l.country());
            QString tooltip = QString(QLatin1String("%1: %2/%3")).arg(l.name(), language, country);
            item->setToolTip(tooltip);
        }
    }
}