10.04.2019 
Each month KDAB schedules time for me to maintain Qt for Android port. Usually I use it to review the pending patches or fix bugs, but sometime there is a quiet month and I have time to add new functionalities or improve the existing ones. April was quite quiet so I decided to rewrite the […]
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Making the Most of your Memory with mmap
Today’s complex applications can soak up megabytes, a memory management strategy is crucial for RAM intensive applications like image/video processing, massive databases, and machine learning.
QMacTouchBar has landed KDAB contributes the widget in QtMacExtras
QMacTouchBar has landed Recent Apple MacBook Pro models contain an entirely new hardware feature, the touchbar. The touchbar is a touch-sensitive OLED strip sitting above the standard keyboard, where the function keys used to be. macOS uses it for some of the physical buttons that used to be located there, such as volume controls, but […]
Qt on CMake Workshop Summary – Feb ’19 - Porting Qt to the CMake build system
Intro Last Monday and Tuesday a few brave souls from both the Qt Company and KDAB gathered together in the KDAB Berlin office premises to work on the CMake build system for building Qt. There was Mikhail, Liang, Tobias, Kai, Simon (QtCompany) as well as Jean-Michaël, Albert, Volker and me (KDAB) sitting together in a […]
Clazy 1.5 released
Clazy 1.5 is now available. This is a small release, mainly focused on bug fixing. Clazy is a clang compiler plugin which emits warnings related to Qt best practices. We’ll be showing Clazy at Embedded World, Nuremberg, Febr 26-28, where we are a main Qt partner. You can read more about it in our previous […]
How to cast a function pointer to a void* a slightly-too-long-for-twitter report about a subtlety in C++
Question: How do you cast a function pointer to a void*? (You’re trustworthy and wouldn’t dare to do anything evil with it, right?) Answer: Maybe your first thought was, well reinterpret_cast<void*>(&f) of course. That was mine, at least. Well, it turns out, C++ wants to support architectures, where data and instruction pointers are physically distinct […]
qsslint – A linter for Qt stylesheets
Enter the wonderful world of tools for which the announcement blog takes more time to write than the tool itself. qsslint is a small command-line utility for verifying the syntax of your Qt stylesheet files (*.qss). It’s much like KDAB’s previous linter contribution, qmllint. It simply returns 0 if the stylesheet is valid, and non-zero […]
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 releases Kuesa™ for 3D asset creation and integration workflow
KDAB announces the release of Kuesa™, a solution that provides an integrated and unified workflow for designers and developers to create, optimize and integrate real time 3D content in a 3D or hybrid 2D/3D software user interface. Kuesa provides an easy, integrated and unified workflow without any compromises for designers and developers giving: great performance […]
A Speed-Up for Charting on Embedded Introducing Min–Max Trees to Summarize Large Amounts of Data
We accumulated 500.000 plus samples of sensor data appended in a huge array. To view this growing sensor information as a waveform graph without visiting all data points in a single pass, we need to cheat...