main.cpp 范例文件

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#include <QQmlApplicationEngine>
#include <QGuiApplication>
#include <QWindow>
#include <QQmlContext>
#include <QStandardPaths>
#include <QDir>
int main(int argc, char *argv[])
{
    QGuiApplication app(argc, argv);
    app.setApplicationName("QuickPlayer");
    app.setOrganizationName("QtWinExtras");
    app.setOrganizationDomain("qt-project.org");
    app.setApplicationDisplayName("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);
    const QStringList arguments = QCoreApplication::arguments();
    const QUrl commandLineUrl = arguments.size() > 1 ? QUrl::fromLocalFile(arguments.at(1)) : QUrl();
    engine.rootContext()->setContextProperty(QStringLiteral("url"), commandLineUrl);
    engine.load(QUrl("qrc:/main.qml"));
    QObject* root = engine.rootObjects().value(0);
    if (QWindow *window = qobject_cast<QWindow *>(root))
        window->show();
    else
        return -1;
    return app.exec();
}