QQuickView Class

 int main(int argc, char *argv[])
 {
     QGuiApplication app(argc, argv);

     QQuickView *view = new QQuickView;
     view->setSource(QUrl::fromLocalFile("myqmlfile.qml"));
     view->show();
     return app.exec();
 }

Member Function Documentation

[explicit] QQuickView::QQuickView(QWindow *parent = nullptr)

Constructs a QQuickView with the given parent. The default value of parent is 0.

QQuickView::QQuickView(QQmlEngine *engine, QWindow *parent)

Constructs a QQuickView with the given QML engine and parent.

Note: In this case, the QQuickView does not own the given engine object; it is the caller's responsibility to destroy the engine. If the engine is deleted before the view, status() will return QQuickView::Error.

See also Status, status(), and errors().

[explicit] QQuickView::QQuickView(const QUrl &source, QWindow *parent = nullptr)

Constructs a QQuickView with the given QML source and parent. The default value of parent is nullptr.

[explicit, since 6.7] QQuickView::QQuickView(QAnyStringView uri, QAnyStringView typeName, QWindow *parent = nullptr)

Constructs a QQuickView with the element specified by uri and typeName and parent parent. The default value of parent is nullptr.

This function was introduced in Qt 6.7.

See also loadFromModule.

[override virtual noexcept] QQuickView::~QQuickView()

Destroys the QQuickView.

QQmlEngine *QQuickView::engine() const

Returns a pointer to the QQmlEngine used for instantiating QML Components.

QList<QQmlError> QQuickView::errors() const

Return the list of errors that occurred during the last compile or create operation. When the status is not Error, an empty list is returned.

QSize QQuickView::initialSize() const

Returns the initial size of the root object.

If resizeMode is QQuickItem::SizeRootObjectToView the root object will be resized to the size of the view. initialSize contains the size of the root object before it was resized.

[override virtual protected] void QQuickView::keyPressEvent(QKeyEvent *e)

Reimplements: QQuickWindow::keyPressEvent(QKeyEvent *e).

[override virtual protected] void QQuickView::keyReleaseEvent(QKeyEvent *e)

Reimplements: QQuickWindow::keyReleaseEvent(QKeyEvent *e).

[slot, since 6.7] void QQuickView::loadFromModule(QAnyStringView uri, QAnyStringView typeName)

Loads the QML component identified by uri and typeName. If the component is backed by a QML file, source will be set accordingly. For types defined in C++, source will be empty.

If any source was set before this method was called, it will be cleared.

Calling this method multiple times with the same uri and typeName will result in the QML component being reinstantiated.

This function was introduced in Qt 6.7.

See also setSource, QQmlComponent::loadFromModule, and QQmlApplicationEngine::loadFromModule.

[override virtual protected] void QQuickView::mouseMoveEvent(QMouseEvent *e)

Reimplements: QQuickWindow::mouseMoveEvent(QMouseEvent *event).

[override virtual protected] void QQuickView::mousePressEvent(QMouseEvent *e)

Reimplements: QQuickWindow::mousePressEvent(QMouseEvent *event).

[override virtual protected] void QQuickView::mouseReleaseEvent(QMouseEvent *e)

Reimplements: QQuickWindow::mouseReleaseEvent(QMouseEvent *event).

QQmlContext *QQuickView::rootContext() const

This function returns the root of the context hierarchy. Each QML component is instantiated in a QQmlContext. QQmlContext's are essential for passing data to QML components. In QML, contexts are arranged hierarchically and this hierarchy is managed by the QQmlEngine.

QQuickItem *QQuickView::rootObject() const

Returns the view's root item.

[slot] void QQuickView::setInitialProperties(const QVariantMap &initialProperties)

Sets the initial properties initialProperties with which the QML component gets initialized after calling QQuickView::setSource().

     QScopedPointer<QQuickView> view { new QQuickView };
     view->setInitialProperties({"x, 100"}, {"width", 50});
     view->setSource(QUrl::fromLocalFile("myqmlfile.qml"));
     view->show();

See also QQmlComponent::createWithInitialProperties().

[slot] void QQuickView::setSource(const QUrl &url)

Sets the source to the url, loads the QML component and instantiates it.

Ensure that the URL provided is full and correct, in particular, use QUrl::fromLocalFile() when loading a file from the local filesystem.

Calling this method multiple times with the same url will result in the QML component being reinstantiated.

See also source().

QUrl QQuickView::source() const

Returns the source URL, if set.

See also setSource().

[signal] void QQuickView::statusChanged(QQuickView::Status status)

This signal is emitted when the component's current status changes.