20.12.2019 
Continuing our blog series about KDToolBox, this time we will discuss UiWatchDog, a keepalive monitor for the GUI thread. Alive? A fundamental rule when writing applications in event-driven UI frameworks such as Qt is: do not ever block the GUI thread! The GUI thread is also usually called the main thread of the application — […]
Technical Get the RSS Feed
Using Visual Studio Code for Writing Qt Applications
Software developers like tools, and in particular tools that make them more productive. So in this blog post, I am going to share with you some of the experiences some of us here at KDAB have had using Visual Studio Code for Qt development. Motivation of using Visual Studio Code instead of Qt Creator The […]
Qt 3D: One too many threads or what has changed in 5.14
Qt 3D makes heavy use of threads, as a way to spread work across CPU cores and maximize throughput, but also to minimize the chances of blocking the main thread. Though nice on paper, the last case eventually leads to added complexity. Sometimes, there are just one too many threads. In the past, we’ve been […]
Qt for Android better than ever before What's new in Qt 5.14 for Android
As you already know KDAB is the largest independent contributor to Qt code. Of course we didn’t get lazy and we’ve added a lot of cool stuff to Qt 5.14. In this article I’m going to write about the super cool stuff that we’ve added to Qt 5.14 for Android. Android multi arch build in […]
Little Trouble in Big Data – Part 3 Dealing with resource bottlenecks
In the previous two blogs in this series I showed how solving an apparently simple problem about loading a lot of data into RAM using mmap() also turned out to require a solution that improved CPU use across cores. In this blog, I’ll show how we dealt with the bottleneck problems that ensued, and finally, […]
3D – Interactions with Qt, KUESA and Qt Design Studio, Part 2
In my last post, I went through a method of creating a simulated reflection with a simple scene. This time I’d like to take the technique and apply it to something a bit more realistic. I have a model of a car that I’d like to show off in KUESA™, and as we know, KUESA […]
Python binding for Kuesa Load, render and manipulate glTF models in your python application using Qt 3D
KUESA™ is a Qt module designed to load, render and manipulate glTF 2.0 models in applications using Qt 3D. Kuesa provides a C++ and a QML API which makes it easy to do things like triggering animations contained in the glTF files, finding camera details defined by the designer, etc. It is a great tool so […]
GammaRay 2.11.0 Release
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 […]
Little Trouble in Big Data – Part 2 improving CPU utilization across cores
In Part 1 of this series we solved the problem of using mmap() to load large set of data into RAM all at once. The catch was that it still took too long. In this blog, I describe how we solve this.
3D – Interactions with Qt, KUESA and Qt Design Studio, Part 1 how to create a reflection with minimal computational effort
Neither KUESA or Qt 3D Studio will give free reflections. If you know about 3D, you know it requires ray tracing software, not OpenGL. So, I wondered if there would be an easy way to create this effect.