qtquickcontrols

I have a QML TreeView that gets data through a QStandardItemModel . When the application is running, I press a button which adds a new entry. I know the data is changing, but the QML TreeView is not updating. I've also tried beginResetModel() and endResetModel() . The data is correctly displayed in the TreeView upon loading the application, but the TreeView does not change when modifying the data in the model. treeviewmodel.cpp #include <QDebug> #include <QStandardItemModel> #include "treeviewmodel.h" TreeViewModel::TreeViewModel(QObject *parent) : QStandardItemModel(parent) { m

I want to grab screen of my QML application. But my root QML object is ApplicationWindow , so I can't use QQuickView to show it. Instead I have to use QQmlApplicationEngine . I know how to take screenshot with QQuickView ( QQuickWindow::grabWindow ), but don't know how to take it with QQmlApplicationEngine . My main file: int main(int argc, char *argv[]) { QApplication app(argc, argv); ApplicationData appData; QQmlApplicationEngine engine; engine.load(QUrl("qrc:///main.qml")); return app.exec(); } main.qml : import QtQuick 2.1 import QtQuick.Controls 1.1 import QtQuick.Window 2.1

I want to implement a sortable TableView with custom roles with Qt 5.1. But I don't know what to do more to make it sorted when user clicked on header. in my Qt .pro file, I added: !android: !ios: !blackberry: qtHaveModule(widgets): QT += widgets in main.cpp, I used QtWidgets/QApplication as global app instance, and used qmlRegisterType for my new model class(see below): qmlRegisterType<PositionModel>("MyDataModule", 1, 0, "PositionModel"); PositionModel is declared following: class PositionModel : public QAbstractTableModel { Q_OBJECT public: enum PositionRoles { CustomRol1 = Qt::UserRole + 1

I would like to create a library of QML custom controls that I would provide to my customers. At the same time I don't want my customers to "reverse-engineer" my controls by peeking into the QML source code. What are my best options to avoid this? The ideal scenario would that I provide my controls as a compiled library that they could import in their own projects. My target platforms are iOS and Android. How can I create the package for custom QML controls? These controls should not be packaged in the source code form to prevent reverse-engineering. The question implies that the author has

I have written a QT Quick program use TabView. When I click the botton b1 which is in Tabview, the program should call show_text() and print the text of b1, but it print "ReferenceError: b1 is not defined". Any suggestion will be appreciated, thanks. import QtQuick 2.2 import QtQuick.Controls 1.1 import QtQuick.Window 2.1 ApplicationWindow { function show_text() { console.log(b1.text) } TabView { id: tv Tab { id: tab1 Button{ id: b1 text:"b1's text" onClicked: { //console.log(b1.text) show_text() } } } } } Pass the object as a parameter import QtQuick 2.2 import QtQuick.Controls 1.1 import