Qt Quick Examples - Window and Screen

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#include <QtGui/QGuiApplication> #include <QtGui/QScreen> #include <QtQml/QQmlEngine> #include <QtQml/QQmlComponent> #include <QtQuick/QQuickWindow> #include <QtCore/QUrl> #include <QDebug> int main(int argc, char* argv[]) { QGuiApplication app(argc, argv); const auto screens = QGuiApplication::screens(); for (QScreen *screen : screens) screen->setOrientationUpdateMask(Qt::LandscapeOrientation | Qt::PortraitOrientation | Qt::InvertedLandscapeOrientation | Qt::InvertedPortraitOrientation); QQmlEngine engine; QQmlComponent component(&engine); QQuickWindow::setDefaultAlphaBuffer(true); component.loadUrl(QUrl("qrc:///window/window.qml")); if ( component.isReady() ) component.create(); else qWarning() << component.errorString(); return app.exec(); }