23.03.2021 
KDAB is bringing you another Qt Desktop Days this May! So, if you missed the first one that was held last September, or if you would like to attend a second, please join us May 19th-20th. That’s a little less than two months away! Qt Desktop Days is primarily a technical event and we want […]
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Efficient custom shapes in QtQuick : shaders
A long time ago, I wrote a post about creating custom shapes in Qt Quick, via the scene-graph APIs. That post covered defining suitable geometry to draw a part of a circle, known also as a ‘sector’, efficiently, since such sectors occur commonly in instrument and vehicle interfaces. I started writing the second part, about […]
A 3D Block Building Game in QML
Here, at KDAB, we get to spend 10% of our time on learning what we don’t know or practicing and improving what we already know. Recently, I decided to use that time to learn more about the Qt Quick Rendering Engine. The best way to do so, I found, is to use it in a […]
KDSingleApplication: a class for single-instance policy applications
Another day, another blog about some of KDAB’s utility classes. Now it’s the turn of KDSingleApplication, a class that helps implement applications that follow the single-instance policy. What is a single-instance policy? Single-instance policy refers to those applications that want to spawn a unique instance for a given user session. Even when launched multiple times, […]
Getting your 3D ready for Qt 6 Compiling Qt 3D for Qt 6 and up
As was previously discussed, since the 6.0.0 release of Qt, Qt 3D no longer ships as a pre-compiled module. If you need to use it on your projects, try out the new features, or just see your existing application is ready for the next chapter of Qt’s life, you need to compile Qt 3D from […]
Beware of Qt Module-wide Includes Save the planet by reducing compilation times!
You know the drill: in C++ you need to #include header files that declare the types and functions from the libraries that you use. Qt is no exception in this regard. Qt follows a very nice convention for its own datatypes: if you need to use a type called QType, then use #include <QType>. This […]
KDDockWidgets 1.2.0 released Wayland, WASM, Qt6
KDAB has released KDDockWidgets 1.2.0. In this version we added support for two platforms, Wayland and WASM. Additionally, Qt 6.0 is now supported. Update: We now have a WASM Demo which you can run directly on your browser. It’s very similar to what you’d get on the desktop, except for the docking indicators and performance (depending on […]
KD Soap 1.10.0 Released! create client applications for web services
We just released KD Soap 1.10.0! What is KD Soap? KD Soap is a tool for creating client applications for web services. With KD Soap, it’s possible to create web services that don’t require further components. This tool makes it possible to interact with applications that have APIs that can be exported as SOAP objects. […]
Full Stack Tracing, Part 3 Interpreting traces
This is the third and last installment of our series about full stack tracing. If you haven’t read them yet, you’ll probably want to check out the introduction and tool setup portions first. In this blog, we’re going to focus on visualizing and interpreting full stack traces. At this point, we’re going to assume that […]
How to build Qt with the Address Sanitizer on Windows
Some time ago, I wrote about how to build C++ projects with ASAN on Windows. Now, if you happen to deal with Qt projects you may want to take this one step further and sanitize Qt itself. Why bother with a sanitized Qt build? Let’s have a closer look on why having a sanitized Qt […]