You want to build the cleanest code, the smartest code, the fastest code. You’re the alpha geek on your team, or maybe you aspire to be. You have an all-encompassing need to know. Let me introduce a new series we’re going to be running here on the KDAB blog. I’m Andy Gryc, and for the […]

The Qt World Summit was a rocking blast! More than 800 delegates, two days packed with sessions (and an additional training day presented by KDAB). Many old faces, lots of new ones, and a packed programme of sessions with terrific technical content. Yours truly also happened to give a talk, "Integrating OpenGL with Qt Quick […]

The latest release of KD Reports further enhances your ability to get printable and exportable reports from code and XML descriptions. For those who like using CMake instead of qmake, you'll be glad to know KD Reports now comes with a fully functioning CMake buildsystem (see INSTALL-cmake.txt). In addition, we have added Frame element and […]

It has been a few months since my last update about the Windows Embedded Compact (WEC) port of Qt. But as I promised last time, I have been working on the WEC2013 support for Qt. Not only because it's the new embedded platform from Microsoft, but also because Qt wants to adopt more C++11 in […]

It's usually said "only improve performance where a profiler tells you to". I don't completely agree. Take a big C++ library like Qt: can you profile all classes and all code paths ? It would take a couple of years to accomplish and analyse the results. It's expensive: It usually only happens if the speed-up […]

In the last episode of this blog series we learned about the overall concepts of input methods in Qt, with a look behind the scenes to see how a key press event from the native windowing system travels through the Qt input stack until it appears on screen inside a QLineEdit. In that context, the […]

Good news, everyone! Qt 5.5 has just been released! The release process of Qt 5.5 has been focused on stabilizing and improving performances. Once more KDAB is proud to be a part of the release, with its engineers constantly providing contributions and patches, as demonstrated by the commit graph of the last 16 weeks: In […]

In this projection demo a laptop takes care of communicating with the Android smartphone on one hand, and of displaying a QtQuick application which puts together all the information for projecting on the other hand. The information being displayed includes missed phone calls, emails, calendar, time, weather, etc. This information is retrieved on the Android […]

mPro (formerly Migari) is a comprehensive software system for the management, monitoring and automation of precision measurement systems in the context of quality control. It can integrate a wide variety of measurement hardware and buses and is programmable and extensible by the integrator and end user. This is necessary as such systems are generally custom […]

QNX CAR is a framework for building In-Vehicle Infotainment systems, including: the QNX OS a powerful mobile connectivity framework a best-in-class acoustic, noise reduction, and hands-free solution an HMI framework supporting HTML5, Qt, and other native UI toolsets. Using Qt5 on QNX, we created a mock-up of a modern interface for a sailing boat, to […]

KDAB is pleased to announce that the Qt 5.5.0 release includes a Technology Preview of the Qt3D module. Qt3D provides a high-level framework to allow developers to easily add 3D content to Qt applications using either QML or C++ APIs. The Qt3D module is released with the Technology Preview status. This means that Qt3D will […]

Quick overview of profiling tools QtQuick is often used to create UIs for embedded devices. One SoC that is quite popular at the moment is the i.MX 6 board from Freescale, with its Vivante GC2000 or GC880 3D GPU. Performance on such a device matters, users expect a fluid interaction. With the QML Profiler, Qt […]

What is an Input Method and what do we need it for? To answer that question, let's see what Wikipedia says: "An input method (or input method editor, commonly abbreviated IME) is an operating system component or program that allows any data, such as keyboard strokes or mouse movements, to be received as input. In […]

Update: Here you have also the Chinese version, thanks goes to Foruok. In the last two Qt on Android episodes we learned how to use basic JNI on Android and how to use an external IDE to easily manage the Java part. In this episode, it is time to move forward and focus on extending […]

Qt is a native library at the heart. As a native (C++) library, it already outperforms most higher-level language libraries when it comes to startup performance. But if you're using native languages, you usually do so because you need to get the most out of the available hardware and being just fast may not be […]

Right from the start, we at KDAB have had lots of fun playing a leading role – and as the Qt experts, we look forward to continuing to contribute to the growing Qt community. As a toast to the next 20 years of fun and success, we are combining the company meeting, this year here […]

The multimedia layer in Qt contains various possibilities for including streaming video in your QtQuick applications - most commonly there's the Video element, which you include in your QML interface, specifying the source URL, playback options and so on. Unfortunately, on iOS you'll discover a limitation: the backend for QtMultimedia only supports window-level integration. In […]

Update: Here you have also the Chinese version, thanks goes to Foruok. In the last Qt on Android episode we learned the basics of JNI on Android in a Qt way. In this episode I'd like to focus on tools that will help us to be more productive when we extend our Qt on Android […]

Trading communication market leader IPC created revolutionary dealer boards by using the Qt software library Stock exchanges are some of the most stressful working environments where shares worth millions of Euros/Dollars are traded within milliseconds. Naturally, brokers and stock traders rely on state-of-the-art communications and trading systems to ensure constant availability and reliability of information […]

It has been very quiet around WEC platform support in Qt, and you would have been forgiven for thinking that nothing was happening. But behind the scenes, we have been tackling some pretty hard issues. We just did not blog about the ongoing work……until now. Be assured that the platform is still maintained and there […]