09.07.2019 
We have released version 2.11.0 of our Qt application monitoring tool GammaRay. GammaRay allows you to observe behavior and data structures of Qt code inside your program live at runtime. GammaRay 2.11 comes with a new inspection tool for Qt’s event handling, providing even more insights into the inner working of your application. Besides looking […]
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GammaRay 2.10.0 Release
We have released version 2.10.0 of our Qt application introspection tool GammaRay. GammaRay allows you to observe behavior and data structures of Qt code inside your program live at runtime. GammaRay 2.10 comes with an entirely new inspection tool for QtLocation geo positioning data. Besides visualizing the currently provided positioning data on a map, it […]
KDAB Training at Qt World Summit Berlin 5th December 2018
KDAB offered eight superb Training Classes in Berlin, you can see the list below, which includes one run by our long-term collaborator, froglogic. All the rest were delivered by KDAB engineers. There were five classes in our Introductory group, and three in the Advanced. Read the descriptions carefully to see which one you’d have liked […]
KDAB au Capitole du Libre 2018 17 - 18 novembre, Toulouse, France
Du 17 au 18 novembre, KDAB sera présent au Capitole du Libre 2018 à Toulouse. Depuis sa création en 2011, KDAB (France) soutient le monde du logiciel libre en étant Sponsor Or du Capitole du Libre. L’événement qui a lieu à l’INP-ENSEEIHT à Toulouse accueille environ 1500 participants chaque année et l’entrée y est libre […]
New in Qt 5.11: improvements to the model/view APIs (part 2)
In the last episode of this series we discussed QAbstractItemModel::checkIndex(). QAbstractItemModel::checkIndex() is a function added in Qt 5.11 that allows developers of model classes to perform some validity checks on the QModelIndex objects passed to the model; specifically, on the indices passed to the APIs that model classes need to implement (rowCount(), columnCount(), data, setData(), […]
Efficient custom shapes in Qt Quick Because rectangles, even rounded ones, can only get you so far.
QtQuick includes basic visual item to construct many common user-interface components, but people often ask how to create different visual appearances, beyond rectangles, round-rectangles and images. There’s various solutions to this problem, and with Qt 5.10, there’s the new Shapes module which makes it easy to define paths, ellipses and other standard SVG drawing elements. […]
Declarative Widgets adding Qt Widgets support to QML
Declarative Widgets is a QML plugin that adds Qt Widgets support to QML. This means we can now easily mix the power of QML with the comfort of a Widgets UI on desktop. Background Declarative Widgets was born out of a breakfast discussion about how awesome it would be to use QML to describe […]
Qt Quick without a GPU: i.MX6 ULL on small embedded devices
With the introduction of the Qt Quick software renderer it became possible to use Qt Quick on devices without a GPU. We investigated how viable this option is on a lower end device, particularly the NXP i.MX6 ULL. It turns out that with some (partially not yet integrated) patches developed by KDAB and The […]
GammaRay 2.9.0 Release
We have released version 2.9.0 of our Qt application introspection tool GammaRay. GammaRay allows you to observe behavior and data structures of Qt code inside your program live at runtime. GammaRay 2.9 introduces a number of new features interesting to Qt Quick, QWidgets, Qt 3D and non-graphical Qt users alike. Qt Quick One focus area of […]
Writing a Custom Qt 3D Aspect – part 2 Setting up the backend and communications
Introduction In the previous article we gave an overview of the process for creating a custom aspect and showed how to create (most of) the front end functionality. In this article we shall continue building our custom aspect by implementing the corresponding backend types, registering the types and setting up communication from the frontend to […]