21.12.2021 
Version 1.3.0 of the KDE Heaptrack project was just released by KDAB’s Milian Wolff. Heaptrack is a heap memory profiler on Linux-based operating systems. It can help you find hotspots that need to be optimized for reducing memory usage, memory leaks, allocation hotspots, and temporary allocations. Included in this release is a special new feature […]
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Posts about Qt, for feeds like planetqt and planetkde
KDFunctionalSortFilterProxyModel A Functional Sort/Filter Proxy Model
Another day, another small addition to KDToolBox, KDAB’s collection of miscellaneous useful C++ classes and stuff. In this post, we’re going to talk about KDFunctionalSortFilterProxyModel, which is a convenience subclass of QSortFilterProxyModel. What’s a proxy model to begin with, and what’s QSortFilterProxyModel? Well, that explanation requires a bigger space than what I have in this […]
KDDockWidgets 1.5.0 Released
We just released KDDockWidgets 1.5.0! What is KDDockWidgets? KDDockWidgets is a development framework for custom-tailored docking systems in Qt, to use when you need advanced docking that is not supported by QDockWidgets. It was created by Sergio Martins as a time-saving alternative to QDockWidgets. The ease-of-use of KDDockWidgets can save you lots of frustration […]
KDE Frameworks – Part 2 Extra CMake Modules for Enhancing Your CMake Code
Qt provides a rich set of high-quality, cross-platform APIs, but can't cover every possible use case. KDE has created code to fill these gaps in its many projects, sharing these libraries as KDE Frameworks.
VS Code for Qt Applications – Part 3 A Technical Guide
This 3-part blog series shows in detail how to get up to speed with a Qt project using Visual Studio Code. Part 3 further integrates Qt into VS Code with syntax highlighting, Qt Creator quick switch and more…
Fun and Scary Code from Qt and KDE
These are some really cool or obfuscated code snippets for your amusement. We didn’t want to rate them, so the order doesn’t mean anything at all 🙂 Just to make sure that there’s no misunderstanding: This code really is/was in the Qt or KDE repositories. From Kivio, main.cpp From Qt 2.2.1 (src/canvas/qcanvas.cpp) Writing code that […]
GammaRay 2.11.3 Released! The Last Release in the 2.11 Series
GammaRay 2.11.3 has been released! GammaRay is KDAB’s software introspection tool for Qt applications. Leveraging the QObject introspection mechanism, it allows you to observe and manipulate your application at runtime. This works both locally on your workstation and remotely on an embedded target. Version 2.11.3 will be the last in the 2.11 series. After this […]
KDAB at CppCon 2021 October 24-29th
CppCon is the annual, week-long face-to-face gathering for the entire C++ community – the biggest C++ event in the world. This year, CppCon takes place both Online and at the Gaylord Rockies Hotel and Convention Center in Aurora, Colorado. KDAB is a Registration sponsor, and Ivan Čukić is offering a talk on Wednesday, October 27th […]
Wayland on Windows Run a Wayland Compositor Directly in Your Windows Machine
Qt provides both a Wayland platform to run Qt applications as Wayland clients in a Wayland compositor and a library to build that, but only on Linux. The WSL subsystem makes that possible on Windows.
Auto-Accepting in QSortFilterProxyModel Since Qt 6.0, QSortFilterProxyModel Can Auto-accept Child Rows of Rows Matching the Filter.
In Qt 5.10, we added support for recursive filtering in QSortFilterProxyModel, which means keeping all parents of items matching the filter. One of the comments in the blog post about that feature was “Sometimes, you do not only want to show parents for a match (so the match is visible), you may (also) want to […]