31.05.2017 
Qt 5.9 has just been released! This release marks two important milestones for the Qt Project. The first is that now the Qt 5 series has had more releases than any other Qt version ever (the last release of the Qt 4 series was Qt 4.8). The second milestone is that Qt 5.9 will be a […]
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Our engineers and designers share cutting-edge technology news and ideas with regard to Qt, QML, Qt on Android, OpenGL, Qt 3D, Vulkan, Scalable UIs and more embedded, mobile and desktop-related topics.
What makes for good animation?
In the beginning there was … That’s how things start, right? And in the beginning there were punch cards. The UI was rudimentary direct machine language, so we could say there was no UI. So let there be light! In very simplistic terms that was a screen where one could type text (using a keyboard) and […]
Corso di Qt/QML per Embedded a Milano, settembre 2017
KDAB è lieta di annunciare una data italiana per il corso Programmazione Qt/QML per sistemi embedded, che si svolgerà a Milano dal 12 al 14 settembre 2017. Qt è un application framework moderno e ricco di funzionalità, utilizzato per realizzare applicazioni cross-platform per sistemi embedded, mobile e desktop. Qt è usato da oltre 800.000 sviluppatori […]
KDAB trainings at CppCon 2017
Registrations for CppCon 2017 have just opened! CppCon is the annual conference for the C++ community: five days packed with amazing talks, inspiring keynotes, panel discussions, hallway chats, fun evening events and much more. CppCon is a project of the Standard C++ Foundation, a not-for-profit organization whose purpose is to support the C++ software developer […]
QStringView Diaries: Masters Of The Overloads How QStringView actively manages implicit conversions
The last blog post in this series described how to use string-views. This post is about how to design one. In particular, it’s about QStringView‘s constructors. They evolved through a rapid succession of changes. These changes either fixed ambiguities between QString and QStringView overloads, or improved performance. And they all have the same solution: std::enable_if, […]
Efficient barcode scanning with QZXing Profiling Qt Zebras Crossing
QZXing is a very useful library: It provides an easy to use Qt integration API around the barcode scanning library ZXing (zebras crossing). Because it is so easy to setup QZXing in a Qt application, we and most of our customers end up using it when they need to scan images for barcodes. There is, or rather […]
Uncovering 32 Qt best practices at compile time with clazy Generating compile-time warnings and automatic refactoring for Qt best practices
In a previous blog post we introduced clazy, a clang plugin which makes the compiler understand Qt semantics, allowing you to get compile-time warnings about Qt best practices ranging from unneeded memory allocations to misuse of API, including fix-its for automatic refactoring. Today we’ll do a round-up and present the checks related to connect statements, […]
Qt 3D Animation Easter Teaser Using Blender and Qt 3D in Qt 5.9 to create, texture, and animate a model
As an Easter treat here is a quick taster of some of the animation goodies coming to Qt 3D along with Qt 5.9. In this post we will briefly outline the steps needed to create a simple Qt 3D application and the assets it uses to produce this little animation:
Disabling narrowing conversions in signal/slot connections
A small new feature that I have added to Qt 5.8 is the possibility of disabling narrowing conversions in the new-style QObject::connect statement. In this short blog post I would like to share with you why I thought this was useful and therefore implemented it. The problem Since Qt 5.0, the new-style, PMF-based (pointer to […]
QStringView Diaries: The Eagle Has Landed QStringView merged for Qt 5.10
After two months of intensive reviews, discussions, fixes, and stripping down the initial commit, feature by feature, to make it acceptable, I am happy to announce that the first QStringView commits have landed in what will eventually become Qt 5.10. Even the docs are already on-line. This is a good time to briefly recapitulate what […]