main.cpp Example File

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#include <QQmlApplicationEngine>
#include <QGuiApplication>
#include <QCommandLineParser>
#include <QCommandLineOption>
#include <QWindow>
#include <QQmlContext>
#include <QStandardPaths>
#include <QDir>

int main(int argc, char *argv[])
{
    QGuiApplication::setAttribute(Qt::AA_EnableHighDpiScaling);
    QGuiApplication app(argc, argv);
    QCoreApplication::setApplicationName(QStringLiteral("QuickPlayer"));
    QCoreApplication::setApplicationVersion(QLatin1String(QT_VERSION_STR));
    QCoreApplication::setOrganizationName(QStringLiteral("QtWinExtras"));
    QCoreApplication::setOrganizationDomain(QStringLiteral("qt-project.org"));
    QGuiApplication::setApplicationDisplayName(QStringLiteral("QtWinExtras Quick Player"));

    QQmlApplicationEngine engine;
    const QStringList musicPaths = QStandardPaths::standardLocations(QStandardPaths::MusicLocation);
    const QUrl musicUrl = QUrl::fromLocalFile(musicPaths.isEmpty() ? QDir::homePath() : musicPaths.first());
    engine.rootContext()->setContextProperty(QStringLiteral("musicUrl"), musicUrl);

    QCommandLineParser parser;
    parser.setApplicationDescription(QGuiApplication::applicationDisplayName());
    parser.addHelpOption();
    parser.addVersionOption();
    parser.addPositionalArgument(QStringLiteral("url"), QStringLiteral("The URL to open."));
    parser.process(app);
    QUrl commandLineUrl;
    if (!parser.positionalArguments().isEmpty())
        commandLineUrl = QUrl::fromUserInput(parser.positionalArguments().constFirst(), QDir::currentPath(), QUrl::AssumeLocalFile);
    engine.rootContext()->setContextProperty(QStringLiteral("url"), commandLineUrl);

    engine.load(QUrl(QStringLiteral("qrc:/main.qml")));
    QObject *root = engine.rootObjects().value(0);
    if (QWindow *window = qobject_cast<QWindow *>(root))
        window->show();
    else
        return -1;
    return app.exec();
}