Stay up-to-date and get inspiration from KDAB’s expert insights into Qt, C++ and OpenGL development.
Our engineers and designers share cutting-edge technology news and ideas with regard to Qt, QML, Qt on Android, OpenGL, Qt 3D, Vulkan, Scalable UIs and more embedded, mobile and desktop-related topics.
KDAB will be partnering with MyScript and The Qt Company to incorporate MyScript’s handwriting input technology into the Qt Automotive Suite. This integration will enable multimodal input capabilities using either the existing Qt Virtual Keyboard or a new handwriting input panel powered by MyScript technology.
Clazy is a clang plugin which extends the compiler with over 50 warnings related to Qt best practices ranging from unneeded memory allocations to API misuse. It’s an opensource project spawned by KDAB’s R&D efforts for better C++ tooling.
Today, we’re proud to announce a Clazy Web UI to view all warnings emitted by Clazy, as well as normal gcc/clang issues.
Furthermore, we’ll be hosting it publicly for the Qt code base. This means that you can now head …
Close to three months after the initial hotspot release, I’m happy to announce the release of version 1.1.0. Quick recap: Hotspot is a graphical frontend to the Linux perf profiler suite. It allows you to visually analyze perf.data files with the built-in Flame Graph and the Bottom-Up, Top-Down, or Caller-Callee data tables. It is a free open source R&D project by KDAB, you can find the code on GitHub.
Version 1.1.0 adds two important new features to this …
When Competence Center ISOBUS (CCI) decided to bring their terminal up-to-date as part of the Group’s strategy to remain top of the field in advanced agritechnical innovation, they asked KDAB to help.
The user interface in the operator’s cab displays multiple applications. It can control complex agricultural tools, receive and display complex reports and much else besides. Crucially, it also needs to be easy to operate and understand.
For this project, QtQuick on Linux Embedded was the natural choice, but …
We have released version 2.8.1 of our Qt application introspection tool GammaRay. This release contains a number of important bugfixes as well as support for Qt 5.9.2. Especially if you are experiencing corrupt views or crashes when searching in the object tree, or having trouble attaching to a process on Windows, you want to upgrade to the new version. The same applies to users of bleeding edge Qt versions experiencing build failures.
Sometimes data visualization might call for more than a graph – you need to visualize complex data, such as that generated by city lighting, in three dimensions to get the full effect.
KDAB decided to put together a showcase for the Qt World Summit that allowed us to demonstrate Qt 3D’s capabilities as a performant next-generation graphics engine, which can draw thousands of lights and objects simultaneously. This also enabled us to show what modern technologies like Qt 3D can …
QtQuick is a popular choice for creating HMIs for embedded devices. The hardware on these devices is often constrained and less performant than their desktop equivalents, this requires extra care from software developers in delivering a fluid user experience. KDAB is regularly involved in improving the performance of QtQuick HMIs on such devices for their customers.
In this demonstration, we will show how to profile and optimize the performance of a QtQuick speedometer, an example taken from an actual embedded …
CppCon is the annual conference for the C++ community: five days packed with over 100 talks, as well as inspiring keynotes, panel discussions, hallway chats, fun evening events and much more. CppCon is a project of the Standard C++ Foundation, a not-for-profit organization whose purpose is to support the C++ software developer community and promote the understanding and use of modern, standard C++ on all compilers and platforms.
Property bindings are one of the most interesting features of the QML language. In QML, when we set a value on a property, the right hand side expression isn’t evaluated just once to produce a value, like in a ordinary imperative language.
In particular, if the expression involves other properties, then the property we’re setting becomes bound to the properties in the expression: whenever they change their values, then the expression is automatically evaluated again, and the target property value …
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