19.07.2017 
When using Qt’s model/view framework, filtering has always been very easy with QSortFilterProxyModel. To filter a list using text typed by the user in a line-edit, you have certainly been applying the standard recipe: instantiate the proxy; insert it between view and source model; connect the lineedit’s textChanged signal to the proxy’s setFilterFixedString slot; done! […]
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hotspot – a GUI for the Linux perf profiler First public release of hotspot v1.0.0 available
After many months of work, I’m very pleased to finally announce KDAB’s latest R&D project to the public: hotspot – a GUI for the Linux perf profiler. I have used Linux perf a lot over the past years.
A tale of 2 curves Or the complexity simplicity requires.
As my first subject for this animation blog series, we will be taking a look at Animation curves. Curves, or better, easing curves, is one of the first concepts we are exposed to when dealing with the subject of animation in the QML space. What are they? Well, in simplistic terms, they are a description […]
GammaRay 2.8.0 Release
We have released version 2.8.0 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. A big focus in this release is improvements to the Qt Quick inspector, which gained layout helper grids and Qt Quick Controls 2 tracing, as […]
Creating PDF/A documents with Qt
As there were some complex issues around conformity in PDF document creation within Qt, KDAB let me spend some time digging into it so we could make sure that Qt’s PDF engine generates documents up to ISO-standard. Nowadays, many official institutions have the requirement to archive their data digitally and PDF is a first class citizen for this […]
KDAB contributions to Qt 5.9
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 […]
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, […]