QML and Qt Quick

Thanks for your reply. I should have been more specific in my question: I know how to write it myself, I was looking for an existing function that already gives the that, akin to QGraphicsItem::sceneTransform. Because how would you expose such a function to QML, so you have it available globally, for all items? I guess that would mean something like a singleton object.

About the zero dependencies: it is indeed really nice that I just have to drop two files in my project to get nice toast functionality.

@Shrishashank thank you very much.

OK, so here's what I needed to do: create a resource file for the custom style. add a prefix: <qresource prefix="/VKeyboardStyles/QtQuick/VirtualKeyboard/Styles/mydefault"> create a folder with the name "mydefault" place my custom style.qml in this folder (along with any custom images I wanted) add this to my main.cpp: qputenv("QT_VIRTUALKEYBOARD_STYLE","mydefault"); I really don't see why this has to be so complicated, but maybe this will help anyone else who's trying to do the same thing. Thanks to everyone who looked.

Use forward slashes for your paths. Backslashes are for escape sequences. AFAIR, it's the file:// scheme to grab stuff from your local drive

You find an example in the doc. https://doc.qt.io/qt-6/qml-qtqml-xmlhttprequest.html

ok thanks

Modify dataGenerator Signal: Qt does not allow non-const references (&) in signals for queued connections. Modify the signal to use a const reference: class dataGenerator : public QObject { Q_OBJECT signals: void DataChunkGenerated(const QVector<double> &dataChunk); // Use const reference }; 2. Ensure dataDisplay Slot Matches the Signature: Your dataDisplay class already has: class dataDisplay : public QObject { Q_OBJECT public slots: void updateData(const QVector<double> &dataChunk); }; This matches the modified signal. Connect the Signal to the Slot in C++: You can establish the connection in main.cpp or wherever you create these objects: dataGenerator *generator = new dataGenerator(); dataDisplay *display = new dataDisplay(); // Connecting the signal from dataGenerator to the slot in dataDisplay QObject::connect(generator, &dataGenerator::DataChunkGenerated, display, &dataDisplay::updateData);

It seems the issue you're experiencing with the ComboBox not scrolling when there are many items is due to the absence of proper height configuration for the ListView inside the Popup. The ListView needs an explicit height to trigger scrolling behavior, and without it, the dropdown won't scroll even when there are many items. To fix this, you can add a fixed or constrained height to the ListView, and ensure the ScrollIndicator appears when needed. Here's the updated code for the popup section: popup: Popup { y: control.height - 1 width: control.width implicitHeight: contentItem.implicitHeight padding: 0 contentItem: ListView { width: parent.width height: Math.min(200, contentHeight) // Constrain the ListView height or set a max height clip: true model: control.popup.visible ? control.delegateModel : null currentIndex: control.highlightedIndex ScrollIndicator.vertical: ScrollIndicator { visible: contentHeight > height // Only show the scroll indicator if the content exceeds the viewable area } } background: Rectangle { radius: 0 color: Qt.color(AppTheme.colors["UFO_ComboBox_Popup_Background"]) border.color: Qt.color(AppTheme.colors["UFO_ComboBox_DropBox_Border"]) } }

@JonB Oh, that makes total sense! Thanks!

Hi @OlivierD You can use colorsemantic using the addAttribute(....) to define a color for each face , iirc just make sure that in the model Material you set lighting: DefaultMaterial.NoLighting

@Fan__ said in PathView delegate use attached attributes: QtVersion: 5.12.5 QtVersion: 5.12.5 is too old. Upgrade Qt above 5.15 or 6.8.

The sizeHint of a QQuickWidget is based on the actual size of it's root item and not on its implicit size, I think that explains the discrepancy. minimumSizeHint() or minimumSize() are not implemented for QQuickWidget but they are for QLabel. You could try inheriting from QQuickWidget and override both sizeHint and minimumSizeHint by returning its root QQuickItem's implicit width/height.

Qt 6 changed some input event handling, so you might need to adjust the event capturing logic. So the solution is: GridView { id: gridViewNodes anchors.fill: parent cellWidth: 140 cellHeight: 120 clip: true highlightMoveDuration: 100 reuseItems: true // unselect MouseArea { anchors.fill: parent propagateComposedEvents: true onClicked: (mouse) => { gridViewNodes.currentIndex = -1 nodeListMultiSelectionHandler.resetSelection() mouse.accepted = false // allow selection } }

The issue was solved Add child model in parent repeater's Compoenet.onCompleted. Repeater { id: repeater1 model: backend.graphModel Component.onCompleted: { repeater2.model = model.GraphMaximumCount } } Repeater { id: repeater2 }

you need to call setFlag(ItemAcceptsInputMethod, true);