main.cpp Example File

qmlweather/main.cpp
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 #include <QtWidgets/QApplication>
 #include <QtQuick/QQuickView>
 #include <QtCore/QDebug>
 #include <QtCore/QDir>
 #include <QtQml/QQmlContext>
 #include <QtQml/QQmlEngine>

 int main(int argc, char *argv[])
 {
     // Qt Charts uses Qt Graphics View Framework for drawing, therefore QApplication must be used.
     QApplication app(argc, argv);

     QQuickView viewer;
     // The following are needed to make examples run without having to install the module
     // in desktop environments.
 #ifdef Q_OS_WIN
     QString extraImportPath(QStringLiteral("%1/../../../../%2"));
 #else
     QString extraImportPath(QStringLiteral("%1/../../../%2"));
 #endif
     viewer.engine()->addImportPath(extraImportPath.arg(QGuiApplication::applicationDirPath(),
                                       QString::fromLatin1("qml")));
     QObject::connect(viewer.engine(), &QQmlEngine::quit, &viewer, &QWindow::close);

     QString appKey;
     if (argc > 1) {
         appKey = argv[1];
         qDebug() << "App key for worldweatheronline.com:" << appKey;
     } else {
         qWarning() << "No app key for worldweatheronline.com given. Using static test data instead of live data.";
     }
     viewer.setTitle(QStringLiteral("QML Weather"));
     viewer.rootContext()->setContextProperty("weatherAppKey", appKey);
     viewer.setSource(QUrl("qrc:/qml/qmlweather/main.qml"));
     viewer.setResizeMode(QQuickView::SizeRootObjectToView);
     viewer.show();

     return app.exec();
 }