QML and Qt Quick

This is how I did it, please go through it and suggest any changes or different approaches for doing the same. @QtQuick2ApplicationViewer *viewer = QtQuick2ApplicationViewer::instance(); QQmlContext *context = viewer->rootContext(); context->setContextProperty("_client", &client); /Main QML File/ viewer->setMainQmlFile(QStringLiteral("qml/qml-dynamic/main.qml")); viewer->showExpanded(); QQmlEngine *engine = viewer->engine(); /dynamically loaded component/ QQmlComponent component(engine, QUrl::fromLocalFile("qml/qml-dynamic/dyn-comp.qml")); QObject *object = component.create(); QQuickItem item = qobject_cast<QQuickItem>(object); /In qml, items won't get drawn unless they are parented to the view./ /* You should always use QObject::setProperty(), QDeclarativeProperty or QMetaProperty::write() to change a QML property value, to ensure the QML engine is made aware of the property change. / object->setProperty("parent", QVariant::fromValue<QObject>(viewer->rootObject())); /This works same as setProperty/ // QQmlProperty::write(object, "parent" // , QVariant::fromValue<QObject*>(viewer->rootObject())); QQmlEngine::setObjectOwnership(object, QQmlEngine::CppOwnership); /Set X and Y properties of the item created./ item->setx(150); item->setY(150);@

OK,I have found the problem. I can't change the parent in Component.onCompleted.I need to change it in MouseArea's onClicked signal which I want to popup the dropdown list. @ MouseArea { width: 400 height: 30 anchors.bottomMargin: 0 anchors.fill: parent; hoverEnabled: true onClicked: { combo.state = combo.state==="dropDown"?"":"dropDown" // Reparent the dropDown to the top-level item so that it always stays on top of all other items var topLevel = dropDown while(topLevel.parent) { topLevel = topLevel.parent } var coordinates = dropDown.mapToItem(topLevel, 0, 0) dropDown.parent = topLevel dropDown.x = coordinates.x dropDown.y = coordinates.y } }@

File a bug report on http://bugreports.qt-project.org/

Happened here too. Probably you should submit a bug report. Doesn't happen to cpp exported object or js object

Oops, you're right! The status is 3 (Component.Error), and the errorString showed there was an error in the qml file I was trying to load. Thanks for the hint!

pleas Qt guys, does anyone know where is problem?

Fo screensaver I had to go down in java.

You're welcome :) [quote author="freddy311082" date="1401503871"]when is it better use QQmlApplicationEngine and QQuickView ??[/quote]If you want a top-level QML window that has a menubar, statusbar and/or toolbar, then you should use QQmlApplicationEngine (with "ApplicationWindow":http://qt-project.org/doc/qt-5/qml-qtquick-controls-applicationwindow.html as your root). If you want to embed a QML GUI inside a widget GUI, you should use QQuickView (Qt 5.0 -- Qt 5.2) or QQuickWidget (Qt 5.3 and later). But if you don't need either of these, then it doesn't really matter which one you choose.

Input handling can be pretty confusing, for developers and users.

I wonder if the problem is due to the use of a static signal. Cross-thread signal delivery uses an event loop in the receiving thread. Intra-thread delivery is a direct call by default. The static use might confuse the detection of the correct connection type.

Hi,shav Thanks for your reply! Here is a sample XML file "XML":http://i.imgur.com/HBdVeZI.png And here is the screenshot I want."view":http://i.imgur.com/QpXjDpJ.png Different components may have different Pins and Bindings in XML. So,I can have 2 LED with different pins. The list items in [Component] list box should be generated dynamically according to Modules.Component in XML. [Binding] column is list box with selection items in XML, and the binding items in list box differs base on the selection of [Component].

Hi, thanks a lot for the tip. I found the code I'm using here: http://answer.techwikihow.com/297416/ask-confirmation-before-closing-qquickview-qapplication.html I now tried another approach and installed an eventFilter which filters QEvent::Close. The code now looks like this: @class Window : public QtQuick2ApplicationViewer { QmltoCpp* qmltocpp; public: void setQmlClass(QmltoCpp* &qmlClass) { qmltocpp = qmlClass; } protected: bool eventFilter(QObject *obj, QEvent *ev) { if (ev->type() == QEvent::Close) { qmltocpp->exit(); return true; } else { return false; } } }; int main(int argc, char *argv[]) { QGuiApplication app(argc, argv); Window viewer; viewer.installEventFilter(&viewer); viewer.setMainQmlFile(QStringLiteral("qml/MyApp/main.qml")); viewer.showExpanded(); return app.exec(); } @ The function qmltocpp->exit() writes the settings to database and then closes the app by calling @QGuiApplication::quit();@ It works as before on Windows 7, tomorrow I'll try it on my Windows 8 tablet. I hope it will work now.

try: @brdImg: "qrc:/resources/MANO_Icon_Foto.png"@

Hi, AFAIK, the animation wont stop even if the visibility is turned to false.

[quote author="prabhatjha" date="1401269566"]i have already tried this example but in qt its not helpful.[/quote]Why?