Documenting software architecture isn't just about diagrams - it's about preserving the reasoning behind design decisions. This post explores why high-level documentation matters, how to write it effectively, and which tools and models (like C4 and arc42) help maintain clarity and consistency over time.

Meet KDAB at NDC Techtown 2025, taking place 22–25 September in Kongsberg, Norway. You will have to opportunity to attend live demos and receive expert insights into performance optimization and software tooling at the exhibition. Our experts look forward to answering your questions directly.

This tutorial shows how to display Qt Widget windows in a Qt Quick application, combining the flexibility of both frameworks. Learn how to manage integration through C++, expose widget properties and signals to QML, and build multi-window UIs for desktop or embedded platforms from real world examples.

KDAB will be participating as a sponsor and exhibitor at the Open Source Summit North America in Denver, Colorado, showcasing applications and tools that leverage Qt, C++, Slint, and Rust.

KDAB and Schneider Digital developed a system that automates stereo 3D setup by dynamically calculating focal distance, camera separation, pop-out, and field of view. A focus-area method inspired by digital cameras continuously adjusts depth, enabling a plug-and-play experience without manual tuning.

Efficient embedded development relies on consistent environments, smart dependency management, and robust CI pipelines. Containers ensure reproducibility and streamline onboarding, while balancing source builds and pre-built packages keeps dependencies manageable. Optimized CI with parallel tests and hardware-in-the-loop improves feedback and quality. Incremental refactoring with atomic commits enables continuous improvement without disrupting development.

Qt Quick apps can show a white flash during window resizing due to frame lag. This happens when the window’s background doesn’t match the system theme. Use SystemPalette to set a theme-aware background color, ensuring smooth, consistent visuals across platforms.

KDAB sponsors this year's Qt World Summit, offering a customer case presentation and two talks on the agenda. KDAB also hosts the popular KDAB Training Day on the day after QtWS.

Effective debugging in embedded Linux requires a full-stack approach and the right tools. This post covers key techniques—from hardware abstraction and static analysis to profiling and logging—to help you build more reliable systems.

This post explores implementing drag-and-drop onto existing items in Qt, such as moving emails between folders. It covers both Model/View and Item Widget approaches, detailing key setup steps and improvements made to Qt along the way.

Choosing the right programming language for your embedded Linux device is crucial. Learn the nuances of C++, Rust, and Dart to make an informed decision.

In this follow-up to our drag-and-drop guide, we explore how to move items between views in Qt’s model/view framework. Learn how to set up both drag and drop sides, handle MIME data, and implement key model methods. Whether you're working with model/view separation or with item widgets, this post provides practical examples to help you customize UI interactions effectively.

With NLnet support, KDE Plasma’s Wayland session now offers improved accessibility and creative tool support. Enhancements include better sticky keys feedback, customizable tablet areas, pressure curve adjustments, and configurable stylus buttons. These updates make Wayland more inclusive, reinforcing KDE’s commitment to accessibility.

Meet KDAB at Embedded World and explore demos featuring Qt, C++, 3D, Slint, Rust, and Flutter, including the HULKs Robot with the first SPL Robotics Framework built with Rust.

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 […]