In the earlier post, we talked about the difficulty of scaling Uis across the current PPI range we have on the mobile and embedded space. We also hinted that the most common way to avoid this problem was done via providing several image assets that help to mitigate this issues. How does it work? How […]

A User Experience is not defined to exist in a single form factor any more. It is expected to be able to flow from one device to another, seemingly adapting itself to each interaction paradigm, and yet retain branding, mood and overall look and feel across multiple platforms. On the other hand, it's expected that […]

In my previous blog, I talked about what characteristics made a good app for Qt in the Android environment. I'll paraphrase an insightful response from Artem Marchenko -- my blog post is really talking only about standalone apps, and not Android integrated ones. That's correct--my blog focused on "easy wins" - areas where you could […]

Behind the screen - development of a QML application. Usually we do not get to talk about the innovative solutions our employees find to almost impossible problems on a daily basis - I guess that is just part of life as a consulting company. Recently we developed an in-house application, and that gives us the […]

Introduction At Qt developer Days in Berlin 2013 I had an Aha! moment. I saw a presentation written in QML rather than the usual Powerpoint/LibreOffice/Keynote. It wasn't that I did not imagine this was possible, rather the contrary, after all in KDAB we have more than 3000 slides on Qt-related topics, all written in .... […]

The power of Qt running on the ubiquity of Android is a potent combination that can be used to great effect in a number of different applications. But are there certain apps that really shine when they’re built using this dynamic duo? Before I go any further, let me introduce myself. My name is Andy […]

erratum 2014-04-13: Updated Bundle Qt libs pros and cons. Update2: Here you can read also the Chinese version, thanks goes to Foruok. After we've learned how to set up the development environment and how to use Qt on Android, it's time to move forward and in this article we are going to learn about different […]

In the last few weeks I've been working on a prose description of how the type-erased container iteration with QVariant works. The existence of the feature and how it can be used was described in my presentation at DevDays 2013. The slides are available here. The video is not available currently, but will be published […]

Urbi et Orbi A new year just started a few weeks ago, but Qt on Android doesn’t have time to rest :). The secret meeting At the beginning of the year I attended a very important workshop in Oslo. For two full days KDAB (me) and Digia (Oslo office folks) secretly discussed the future of […]

Update: Here you can read also the Chinese version, thanks goes to Foruok. Use Qt on Android After we learned how to setup the development environment, we'll move forward in this article and learn how to use Qt Creator 3.0 (the one that comes with Qt 5.2 SDK) to create, run, debug and setup Qt […]

The guys at QNX have been doing such great stuff with the QNX Concept Car, we wanted to draw our reader's attention to the fact that, "under the hood" and so not publicized, the awesome entertainment system and the instrument cluster in the Mercedes are done with Qt 5 (QML2 to be precise) on top […]

Update: Qt on Android Episode 3 is available here. Update2: Here you can read also the Chinese version, thanks goes to Foruok. In this article we'll move forward and see how to set up the development environment for Android. A few remarks before we start: This article focuses on Qt 5.2! I'll add comments for […]

Update: Qt on Android Episode 2 is available here. Update2: Here you can read also the Chinese version, thanks goes to Foruok. I’d like to start a new series of blog posts focused on Qt on Android. The first article is about how it began, how it works, the current status, what to expect from […]

This blog post is part of an ongoing series about the internals of the QML engine. In today's post, we'll examine the concept of custom parsers in QML. Recap In the first blog post of the series, we covered how the QML engine loads QML files. One important concept was that every element in the […]

This article continues our series on what is new in Qt 5.1 with respect to OpenGL. If you haven't already seen them, you may be interested in reading Part 1 and Part 2. Timer Queries OpenGL on the desktop exposes a very useful tool in the shape of timer query objects. These can be used […]

This article continues our series on what is new in Qt 5.1 with respect to OpenGL. The first installment can be found here. Vertex Array Objects Qt has QOpenGLBuffer (and before that QGLBuffer) to help manage various types of OpenGL buffer objects such as per-vertex attribute data and element index buffers. OpenGL also has a […]

This blog is the first in a series that will show how to use OpenGL with Qt 5. In this article, we shall take a very quick look at Qt's historical support for OpenGL and then go on to describe the first batch of new features coming in Qt 5.1 that will enhance Qt's OpenGL […]

This blog post is part of an ongoing series about the internals of the QML engine. In the last blog post, we covered how bindings in the QML engine work. In this post, we'll examine the different kind of bindings. Some of this content is already covered by my DevDays talk QtQuick Under the Hood. […]

This blog post is part of an ongoing series about the internals of the QML engine. In the last blog post, we covered how the QML engine loads QML files. To recap, QML files are parsed and then C++ objects are created for all elements in the QML file. For example, we saw that when […]

In this series of blog posts, we'll look under the hood of the QML engine and uncover some of its inner workings. The articles are based on the Qt5 version of QtQuick, QtQuick 2.0. Most people know that each element in a QML file is backed by a C++ class. When a QML file is […]