QML and Qt Quick

It is bug in Qt. Please look at the bug https://bugreports.qt.io/browse/QTBUG-82433

@JKSH Scene graph is rendering loop of Qt Quick. How does frame graph gets render? How GPU resources are shared between Qt Quick 2 and Qt3D

@rykomick It is not recommended that you access QML objects directly from C++, it is best to create a QObject that has a property of the same type that the method requires and export it to QML through setContextProperty() or another mechanism and make the connection in QML.

@raven-worx Thanks for your time. I think I need to spend some more time reading about Qt's MetaType system.

Try it offline, this way it wont go online and fetch tiles.. just a thought. lets see if you get any errors.

Nobody to help me ;-( No pay, no support. I gave up qt. bye~

I did not manage with the standard file dialog but with the platforms file dialog. the solution is to set the currentFile property

@hslee_6560 said in How to connect a signal to another in QML: so, I thought It would also possible in QML You're right! https://doc.qt.io/qt-5/qtqml-syntax-signals.html

I would suggest depending on your needs to use a model if you are planning on using a big data structure with a lot of components, but if you want to keep it simple I recommend using qmlRegisterType as FKosmale suggested.

@FKosmale said in Tying a context to the lifetime of a qml component?: avoid setting context properties I guess I could create QQuickItem objects and add the relevant properties to those. I will have to think on this.

@SGaist @Christian-Ehrlicher How would I let the view know about the data change ? And I would like to mention I am displaying the list of users with UserRole like this: QVariant UserModel::data(const QModelIndex &index, int role) const{ QVariant value; if (index.isValid()) { if (role < Qt::UserRole) value = QSqlQueryModel::data(index, role); else { int columnIdx = role - Qt::UserRole - 1; QModelIndex modelIndex = this->index(index.row(), columnIdx); value = QSqlQueryModel::data(modelIndex, Qt::DisplayRole); } } return value; } QHash<int, QByteArray> UserModel::roleNames() const{ QHash<int, QByteArray> roles; for (int i = 0; i < record().count(); i ++) { roles.insert(Qt::UserRole + i + 1, record().fieldName(i).toUtf8()); } return roles; }

@filipdns Hello, I'm trying what I need with the code below: function numberGraph() { var count= StringList.mecanoList().length for(var i=0;i<count;i++) { var trigramme=StringList.mecanoList()[i] console.log(trigramme) modelId.append({'mColor': 'blue','names':trigramme}) } } ListModel { id: modelId } BarCategoryAxis {id:categoryaxis; categories: ["2007", "2008", "2009", "2010", "2011","2012"] } Rectangle { id: rectId color: "transparent" anchors.fill: parent GridView { id: mGridViewId //anchors.fill: parent width: parent.width; height: parent.height cellWidth: parent.width; cellHeight: 300 model: modelId delegate: Rectangle { width: mGridViewId.cellWidth; height: mGridViewId.cellHeight color: mColor ChartView { width: parent.width; height: parent.height title:names StackedBarSeries { axisX:categoryaxis BarSet {id:free; label: "Free";values:[1,2,1,3]} BarSet {id:duty; label: "Duty";values:[1,2,5,0]} BarSet {id:off; label: "OFF";values:[5,3,1,4];color:"red"} } } } } } StackedBarSeries Charts are build fine but when I'm trying to scroll down, the application crash when I'm passing the seventh charts without any information on the reason, only the console message: "Can not find series on the chart." Trying to set axisX to null. Could you help me please? Kind regards

Thanks using below code works Keys.onReleased: { if(event.key === Qt.Key_Space && !event.isAutoRepeat) { // code here } }