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50
51#include <QtGui/QGuiApplication>
52#include <QtGui/QScreen>
53#include <QtQml/QQmlEngine>
54#include <QtQml/QQmlComponent>
55#include <QtQuick/QQuickWindow>
56#include <QtCore/QUrl>
57#include <QDebug>
58
59int main(int argc, char* argv[])
60{
61 QGuiApplication app(argc, argv);
62 const auto screens = QGuiApplication::screens();
63 for (QScreen *screen : screens)
64 screen->setOrientationUpdateMask(Qt::LandscapeOrientation | Qt::PortraitOrientation |
65 Qt::InvertedLandscapeOrientation | Qt::InvertedPortraitOrientation);
66 QQmlEngine engine;
67 QQmlComponent component(&engine);
68 QQuickWindow::setDefaultAlphaBuffer(true);
69 component.loadUrl(url: QUrl("qrc:///window/window.qml"));
70 if ( component.isReady() )
71 component.create();
72 else
73 qWarning() << component.errorString();
74 return app.exec();
75}
76

source code of qtdeclarative/examples/quick/window/main.cpp