main.cpp 范例文件

quickplayer/main.cpp
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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(); }