10.01.2018 
If you are using Qt and you need to run some code in a separate thread, chances are that you are using QThread for the job. QThread is a very old class in Qt, making its first appearance in Qt 2.2, released on the 22nd of September 2000. Its responsibility is to start a new […]
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Posts about Qt, for feeds like planetqt and planetkde
An Unexpected C++ Journey Can you use Umlaut in variable names?
Some of you may know that KDAB employees enjoy flexibility on working hours as well as location, and some choose to work from home, with the opportunity to share childcare, do part-time study or simply enjoy an out-of-the-way location. All that’s required is a decent bandwidth for KDAB work. About once a year, all of […]
nanoQuill The Coloring Book Of Life #color4cancer
Through their partnership, Qi and KDAB have developed imaging software to help researchers gain a deeper understanding of the progression of cancer on a cellular level, using Qt. Qi, KDAB and Qt have now taken their collaboration one step further by introducing nanoQuill, otherwise known as “The Coloring Book of Life,” which is a […]
Riding the curve Animation via Bezier curve manipulation.
So, last time we spoke, I left you this teaser… I mean how hard could it be? right? OK So, hum, an easy enough exercise….. for a path-based animation like we saw last time. But how do I draw such a path? How do I time the inflections in speed for that path, since time […]
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 […]
Update to Linux perf report Improved handling of inlined frames
Linux perf is an immensely useful and powerful tool suite for profiling of C/C++ applications. I have used it extensively and successfully on various customer projects, both for desktop applications as well as automotive or industrial projects targeting low-end embedded Linux targets running on ARM hardware. The biggest problem with perf really is its usability, […]
Porting Applications to Qt Best approaches and pitfalls to avoid when migrating your app from a legacy framework
KDAB has unique experience in porting the code base for toolkits like Qt 3, Qt 4, Motif, Java, Tcl, GTK, .NET, MFC, and Photon to Qt 5. Porting legacy GUI toolkits to Qt 5 is a job where proven experience saves a lot of time. In this presentation we highlight the main problems facing developers […]
Writing a Custom Qt 3D Aspect – part 1 Extending Qt 3D via Aspects
Introduction Qt 3D has a flexible and extensible architecture that allows us to easily add our own new functionality to it without disrupting the existing features. The functionality of Qt 3D is divided among so-called aspects, each of which encapsulates a particular subject domain such as rendering, input, or animation. This short series of articles […]
CppCon 2017: trip report
During the last week of September I attended the 2017 edition of CppCon, in Bellevue, WA. Unusually late due to my presence at Qt World Summit which took place just after it, here’s my trip report.
KDAB, MyScript and Qt Company to create new, non-distractive input method for the Automotive Industry
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. KDAB’s Jan Arne Petersen demonstrated some of the potential of […]