Revision control
++ // Copyright (C) 2025 The Qt Company Ltd.
++ // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
++
++ #include <QApplication>
++ #include <QCommandLineParser>
++ #include <QDir>
++ #include <QLocale>
++ #include <QQmlApplicationEngine>
++ #include <QTranslator>
++
++ using namespace Qt::Literals::StringLiterals;
++
++ int main(int argc, char *argv[])
++ {
++ QApplication app(argc, argv);
++ QCommandLineParser parser;
++ QCommandLineOption localeOption("locale"_L1, "Locale to be used in the user interface"_L1,
++ "locale"_L1);
++ parser.addOption(localeOption);
++ parser.addHelpOption();
++ parser.process(app);
++
++ if (parser.isSet(localeOption)) {
++ QLocale locale(parser.value(localeOption));
++ qInfo() << "Setting locale to" << locale.name();
++ QLocale::setDefault(locale);
++ }
++
++ qInfo() << "Current locale:" << QLocale();
++ qInfo() << "UI languages in locale:" << QLocale().uiLanguages().join(", "_L1);
++
++ // Always install English plurals
++ QTranslator enPlurals;
++ const auto enPluralsPath = ":/i18n/clock_en.qm"_L1;
++ if (!enPlurals.load(enPluralsPath))
++ qFatal("Could not load %s!", qUtf8Printable(enPluralsPath));
++ app.installTranslator(&enPlurals);
++
++ // Load translation based on QLocale::uiLanguages()
++ QTranslator translation;
++ if (QLocale().language() != QLocale::English) {
++ if (translation.load(QLocale(), "clock"_L1, "_"_L1, ":/i18n/"_L1)) {
++ qInfo("Loading translation %s",
++ qUtf8Printable(QDir::toNativeSeparators(translation.filePath())));
++ if (!app.installTranslator(&translation))
++ qWarning("Could not install %s!",
++ qUtf8Printable(QDir::toNativeSeparators(translation.filePath())));
++ } else {
++ qInfo("Could not load translation to %s. Using English.",
++ qUtf8Printable(QLocale().name()));
++ }
++ }
++
++ QQmlApplicationEngine engine;
++ QObject::connect(
++ &engine, &QQmlApplicationEngine::objectCreationFailed, &app,
++ [](const QUrl &) { QCoreApplication::exit(-1); }, Qt::QueuedConnection);
++ engine.loadFromModule("qtexamples.localizedclock", "Main");
++ return app.exec();
++ }