Key architectural choices - monolithic vs. microservices - impact scalability and complexity. Planning for multi-user support early prevents costly modifications, while containers enhance consistency and security in deployment. Strong security practices, such as minimizing root access and securing OS vulnerabilities, are essential for resilience. Thoughtful planning ensures a scalable, secure, and maintainable embedded system.

This blog post is the first in a series on implementing drag-and-drop in the Qt model/view framework. It covers how to reorder items within a single view, whether you're using QListView, QTableView, or QTreeView with a custom model, or QListWidget, QTableWidget, or QTreeWidget with items. The post includes code examples, checklists, and insights into improvements made in Qt 6.8 for smoother drag-and-drop functionality.

Mozilla is the maker of the famous Firefox web browser and the birthplace of the likes of Rust and Servo (read more about Embedding the Servo Web Engine in Qt). Firefox is a huge, multi-platform, multi-language project with 21 million lines of code back in 2020, according to their own blog post. Navigating in projects […]

Choosing the ideal software stack for your embedded device is a decision that influences both its performance and long-term value. With so many tools available, the burden of figuring out where to start can feel overwhelming. This blog aims to help you streamline your software selection, focusing primarily on the lowest level of the software […]

In a recent email, KDABian Leon Matthes highlighted some of his go-to command line tools for everyday use on Unix. His recommendations sparked a lively exchange among our colleagues, each sharing their own favorite utilities. Many of these tools offer efficient alternatives to standard Unix programs, speeding up the workflow or otherwise enriching the development […]

The goal When building C++ code with CMake, it is very common to want to set some pre-processor defines in the CMake code. For instance, we might want to set the project's version number in a single place, in CMake code like this: This sets the CMake variable PROJECT_VERSION to 1.5, which we can then […]

Shipping your product to customers is where some real challenges in software development begin. Once it lands in customers’ hands, delivering the expected and necessary software updates can be a complicated task. Here’s a breakdown of some key considerations to keep your product, and your customers, running smoothly, even after your product has shipped. Getting […]

Early-Bird tickets are on sale for the KDAB Training Day 2025 until 2025-03-31 23:59 The KDAB Training Day 2025 will take place in Munich on May 8th, right after the Qt World Summit on May 6th-7th. Choose to buy a combo ticket here (for access to QtWS and Training Day) or here (for access to […]

We just released CXX-Qt version 0.7! CXX-Qt is a set of Rust crates for creating bidirectional Rust ⇄ C++ bindings with Qt. It supports integrating Rust into C++ applications using CMake or building Rust applications with Cargo. CXX-Qt provides tools for implementing QObject subclasses in Rust that can be used from C++, QML, and JavaScript. […]

KDAB is an exhibitor at the Embedded Software Engineering Kongress (ESE) held in Sindelfingen (Germany) from December 2nd to 5th. Registration is already open! "The ESE Congress is Germany's leading congress for the embedded software industry. Every year in December, over 1,200 professionals meet to learn about current technologies and methods, discuss trends and set […]

In recent years, a lot has been happening to improve performance, maintainability and tooling of QML. Some of those improvements can only take full effect when your code follows modern best practices. Here are 10 things you can do in order to modernize your QML code and take full advantage of QML's capabilities. 1. Use […]

Not all devices require screens. Some rely on web-based user interfaces or smartphone apps for control and interaction. But if your product needs a built-in screen and you need to decide which to get and what to do with it, the rest of this blog is for you. Elaborate or plain? It’s important to choose […]

KDAB is a Gold Sponsor at this year’s Meeting C++, a highly recommended 3-day hybrid event for the European C++ community. Locate the KDAB booth on the entrance level and talk to experts Ivan Čukić and Milian Wolff on any of the event days. At the booth, you will also get a live demo of […]

Choosing the right hardware for an embedded Linux device is so much more important than your software choices. Making the wrong decision can lead to significant costs and disruptions if you have to change hardware mid-development. Read this blog first before you solidify your choice. Custom or commercial? Choosing between a custom or commercially available […]

We’re pleased to announce the release of KD Reports 2.3.0, the latest version of our reporting tool for Qt applications. This marks our first major update in two years, bringing several bug fixes and new features that further improve the experience of generating reports. What is KD Reports? KD Reports is a versatile tool for […]

Recap In Part 1, we covered PCM audio and superimposing waveforms, and developed an algorithm to combine an arbitrary number of audio streams into one. Now we need to use these ideas to finish a full implementation using Qt Multimedia. Using Qt Multimedia for Audio Device Access So what do we need? Well, we want […]

Adopting proven practices like continuous integration (CI) and continuous deployment (CD) is a key part of modern software design. These methodologies enhance software quality and team productivity while shortening development cycles – what’s not to love? Arguably, it’s the short-term pain of getting these systems installed and configured for your environment and the long-term pain […]

In C++20, the standard library introduced new synchronization primitives: std::latch and std::barrier. These are the utilities designed to coordinate between concurrent threads. What is a synchronization primitive? In concurrent programming, synchronization primitives are the fundamental tools that help in managing the coordination, execution order, and data safety of multiple threads or processes that run concurrently. […]

Desktop software has many differences from mobile and embedded applications but one of the biggest and most obvious is the screen. How can you take advantage of all that real estate for your application? Six considerations for managing the screen in your desktop application Choosing the right GUI framework Use a flexible GUI framework that […]

Motivation When using Qt Multimedia to play audio files, it’s common to use QMediaPlayer, as it supports a larger variety of formats than QSound and QSoundEffect. Consider a Qt application with several audio sources; for example, different notification sounds that may play simultaneously. We want to avoid cutting notification sounds off when a new one […]