Qt Certification Exams Updated to Qt 6.12 LTSThe Qt Certification program continues to evolve alongside the Qt framework. We are pleased to announce that the Qt certification exams have been updated from Qt 6.8 LTS to Qt 6.12 LTS, ensuring that certified developers are assessed against the latest Qt technologies and best practices. The certification portfolio now consists of four professional certification exams: Qt Foundation Qt Quick Developer Qt Quick Specialist Qt Application Developer Together, these certifications cover a broad range of Qt development skills, from core framework knowledge and application development to advanced Qt Quick and QML expertise. What's New in the Qt 6.12 Update? The certification exams were originally built around Qt 6.8 and have now been updated to reflect the Qt 6.12 LTS release. New questions have been added covering functionality, APIs, development practices, and concepts introduced between Qt 6.9 and Qt 6.12. The goal is simple: certifications should reflect the knowledge and skills that developers use in current Qt projects. To support this, the certification content is regularly reviewed and updated alongside new Qt releases. In addition to updating existing question pools, the certification team has reviewed and refined exam content to ensure alignment with modern Qt development workflows and best practices . Ready for Qt 6.12? Put your knowledge to the test and earn a Qt certification. Learn more and book your exam at the Qt Certification Testing platform . Certification exams are delivered online in scheduled sessions and are available globally in English.๐Qt BlogWelcome to SwedenCpp
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Thursday, October 29, 2026
Qt Certification Exams Updated to Qt 6.12 LTSThe Qt Certification program continues to evolve alongside the Qt framework. We are pleased to announce that the Qt certification exams have been updated from Qt 6.8 LTS to Qt 6.12 LTS, ensuring that certified developers are assessed against the latest Qt technologies and best practices. The certification portfolio now consists of four professional certification exams: Qt Foundation Qt Quick Developer Qt Quick Specialist Qt Application Developer Together, these certifications cover a broad range of Qt development skills, from core framework knowledge and application development to advanced Qt Quick and QML expertise. What's New in the Qt 6.12 Update? The certification exams were originally built around Qt 6.8 and have now been updated to reflect the Qt 6.12 LTS release. New questions have been added covering functionality, APIs, development practices, and concepts introduced between Qt 6.9 and Qt 6.12. The goal is simple: certifications should reflect the knowledge and skills that developers use in current Qt projects. To support this, the certification content is regularly reviewed and updated alongside new Qt releases. In addition to updating existing question pools, the certification team has reviewed and refined exam content to ensure alignment with modern Qt development workflows and best practices . Ready for Qt 6.12? Put your knowledge to the test and earn a Qt certification. Learn more and book your exam at the Qt Certification Testing platform . Certification exams are delivered online in scheduled sessions and are available globally in English.๐Qt Blog
Let them try it before they install anythingLet them try it before they install anything You found a promising library. To actually try it, you clone the repository, install a toolchain it expects, wire it into your build system, and resolve its dependencies. One hour later, before you have written a single line of your own, you are debugging someone else's CMake. Most people never get that far and simply close the tab.๐mp-unitsIf this page is useful, please consider donating a coffee
Wednesday, October 28, 2026
CMake 4.5.0-rc2 is ready for testingThe second CMake 4.5 release candidate!๐Kitware Inc
C++/WinRT overcorrection: Using make_self and immediately converting it to the projected interfaceYou are taking the scenic route. The post C++/WinRT overcorrection: Using make_self and immediately converting it to the projected interface appeared first on The Old New Thing .๐The Old New Thing
Why VTK Arrays Are Not NumPy Arrays (Anymore)In my last blog, I promised to get into the philosophy of the latest rewrite of VTK arrays in Python. Here it is. Let's start with the line that looks like a step backwards.๐Kitware Inc
DJ่ฃฝๅใซใใใJUCEๆดป็จ - ็พ็ถใจไปๅพใฎๅฑๆ - Masamichi Tomii, Akihito Yamada & Tetsuro Abe - ADC Japan 2026๐ฅaudiodevcon
What is PVS-Studio?๐ฅPVS-Studio
Vibe Coding Is Not a Software Engineering MethodologyVibe coding gets software running fast, but it is not software engineering. Why AI-built tools still need owners, evidence, and a path to grow up.๐John FarrierTuesday, October 27, 2026
C++26 Ranges: Parallel Algorithms and Safer FiltersIn part 1 we looked at the new views C++26 adds, and in part 2 we covered the infrastructure improvements. This final part is about the biggest gap in C++20 ranges: you couldnโt run them in parallel. C++17 added execution policies to the classic std:: algorithms, but C++20 ranges never got them. If you wanted parallelism, you had to decompose your ranges pipeline back into iterator pairs. C++26...๐Sandor Dargo's Blog
Don't Miss ADC26 | Get Your Online Pass Today!๐ฅaudiodevcon
AI is Forcing us to Obey Scott Meyers - Jody Hagins - C++Now 2026๐ฅCppNowWhy donโt we run the taskbar and Task Manager at high priority, so they can remain responsive?Hurry up and wait. The post Why donโt we run the taskbar and Task Manager at high priority, so they can remain responsive? appeared first on The Old New Thing .๐The Old New ThingQt Creator 21 RC releasedWe are happy to announce the release of Qt Creator 21 RC.๐Qt Blog
Embedding Next-Gen Graphics: VTKโs Hardware Windows, WebGPU, and QVTKWebGPUWidgetFor most of VTKโs history, rendering and window management went hand in hand. A single vtkRenderWindow handled it all: creating the OS window, managing the OpenGL context, running the event loop, and drawing pixels. In the early days of OpenGL, pairing them together made perfect senseโthe graphics context was tightly bound to the window, so [โฆ]๐Kitware Inc
Orphan Processes (C example)๐ฅJacob Sorber
Qt Bridges Technology Preview: Qt Quick UIs for Rust and C# DevelopersWhen we announced Qt Bridges at Qt World Summit 2025, we had a simple goal: let developers build Qt Quick user interfaces with a backend written in their favorite programming languages. This year, the C# and Rust bridges went through several public betas. Thank you to everyone who tried them and sent feedback. It shaped every release.๐Qt Blog
Meet Clate: the First Design Tool for Real-World ExperiencesClate Beta is out today, free for everyone. It's a no-code, AI-native UX design tool built for embedded and HMI applications , with QML under the hood, so designers can stay in control of the full user experience.๐Qt BlogSecurity advisory: CVE-2026-105946 Out-of-bounds read vulnerability in NTLM authentication handling impacts QtAn out-of-bounds read vulnerability in the Qt NTLM authentication handling of the Qt Network module has been discovered and has been assigned the CVE id CVE-2026-105946. Applications using QNetworkAccessManager or QTcpSocket that authenticate with NTLM, including through a proxy, are affected.๐Qt BlogSecurity advisory: CVE-2026-107590: Out-of-bounds write vulnerability in QTextCodec iconv-based encoding impacts QtAn out-of-bounds write vulnerability in the Qt QTextCodec iconv-based encoding of the Qt 5 Compatibility APIs module (Qt Core in Qt 5 and earlier) has been discovered and has been assigned the CVE id CVE-2026-107590.๐Qt Blog
Message Passing - Concurrency Part 9 of N [D Language - Dlang Episode 156]๐ฅMike Shah
Persistent Test Runners: How Persistent Workers for Tests Can Cut Test Times by 46%Persistent Test Runners: How Persistent Workers for Tests Can Cut Test Times by 46% This post is based on the BazelCon 2026 talk I gave with Antonio Di Stefano( Frekt.dev ). You can watch the recording on YouTubebelow. Bazel has used persistentworkers for years tomake compilation faster. A persistent test runner applies the same idea totests: keep a long-running test execution process alive and reuse it acrossmultiple tests, instead of paying its warmup cost every time.๐EngFlow BlogMonday, October 26, 2026
Introducing NetMaestro: Open Source Network Modeling and SimulationNetwork engineers need to evaluate changes to infrastructure without disrupting the systems that depend on it. Testing a new configuration, replacing equipment, or investigating a potential failure can be difficult when physical testbeds are expensive and production networks cannot be used for experimentation. Kitware is developing NetMaestro, an open source network modeling and simulation tool that allows engineers to investigate congestion, compare configurations, and explore what-if scenarios using virtual network models before making changes to production infrastructure.๐Kitware Inc
Billion-query-per-second lookup tables in C++A lot of software spends its time mapping strings to values. A web server must identify the HTTP method (GET, POST, โฆ). It must recognize header names. A URL parser must recognize the protocol (http, https, ftp, โฆ). A compiler must recognize keywords. In C++, the default approach is to put the strings in a โฆ Continue reading Billion-query-per-second lookup tables in C++๐Daniel Lemire's blog
Supercomputing 2026At SC26, Kitware will showcase interactive visual workflows designed for large, complex simulations. Our work combines scalable visualization, in situ analysis, AI, GPU computing, and modern application development to support todayโs demanding scientific and engineering workflows. Visit Kitwareโs booth to see these capabilities in action and talk directly with our technical team.๐Kitware Inc
With Qt 6.12, the SkyMaterial is the limitQt Quick 3D 6.12 introduces a new SkyMaterial QML type, and in this post we will explain what it is, how to use it and why you'd want to. SkyMaterial provides a way of writing custom fragment shader code to render a scene's sky, as well as computing image-based lighting (IBL) from it. This means the same sky acts as both the visible background and a light source for the scene. With it you can create a dynamic sky with a moving sun, day/night cycle, clouds, stars etc. QML properties set on the SkyMaterial type are automatically made available in the custom shader, and whenever a property is updated, the SkyMaterial re-renders itself. This is what makes it possible to have a dynamic sky. Since the rendering is happening on the GPU, the performance cost depends on the complexity of the shader and how often it is updated. It is possible to tweak certain quality and performance properties to fit your performance budget. To use SkyMaterial in your 3D scene you need to point the SceneEnvironment::skyMaterial property to your SkyMaterial object, and set SceneEnvironment::backgroundMode to SceneEnvironment.SkyMaterial .๐Qt Blog
C++ Weekly - Ep 556 - C++23's is_implicit_lifetime๐ฅJason TurnerPuzzling out why a program doesnโt work when run from a batch file, but works when double-clicked from ExplorerMimicking the operation more accurately. The post Puzzling out why a program doesnโt work when run from a batch file, but works when double-clicked from Explorer appeared first on The Old New Thing .๐The Old New ThingQt 6.11.3 ReleasedThe last release from Qt 6.11 series, Qt 6.11.3, is now available for download. As a patch release, Qt 6.11.3 doesnโt introduce new features, but it delivers around 200 bug fixes, security improvements, and quality enhancements on top of Qt 6.11.2. For a full overview of the most notable changes, take a look at the Qt 6.11.3 release notes .๐Qt Blog
Creating Composable Callables in C++ - Using Senders / Receivers as a Frame Graph - Bjรถrn Fahller๐ฅACCUConfSecurity advisory: CVE-2026-107472 Out-of-bounds read vulnerability in QTextCodec TSCII encoding impacts QtQTextCodec TSCII encoding of the Qt 5 Compatibility APIs module (Qt Core in Qt 5 and earlier) has been discovered and has been assigned the CVE id CVE-2026-107472.๐Qt Blog
TX/RX Part 2 - AI Audio on the Raspberry Pi - Kieran Coulter - ADC Japan 2026๐ฅaudiodevconSecurity advisory: CVE-2026-107157 Out-of-bounds read vulnerability in QCborValue::fromCbor() impacts Qt FrameworkAn out-of-bounds read vulnerability in the Qt Framework CBOR parsing functionality (QCborValue::fromCbor()) of the Qt Core module has been discovered and has been assigned the CVE id CVE-2026-107157.๐Qt BlogSunday, October 25, 2026
Saturday, October 24, 2026
The C++26 inplace_vector containerThe C++26 standard features a new container called std::inplace_vector, that sits in between the std::array and std::vector containers. Itโs a container with a compiled-time fix capacity โ like std::array, but a runtime variable size โ like std::vector. In this article, we will discuss how it works and when to use it. A tale of two ... Read more The post The C++26 inplace_vector container first appeared on Marius Bancila's Blog .๐Marius Bancila's Blog
0x41: Intro, NB Body + DIS voting new, and the Quiz๐ฅSwedenCpp
What static, inline, const, constexpr Mean and When to Use Them - Andreas Fertig - ACCU 2026๐ฅACCUConf
Auto Reserach - Bryce Adelstein Lelbach - Guest Lecture CS Colloquium๐ฅMike ShahFriday, October 23, 2026
Binary Search in C++: throw half away each look (LeetCode 704)๐ฅDeepDiveDevWhy didnโt we use the COM static store to clean up the unmarshalable delegate?It cleans up at the wrong time. The post Why didnโt we use the COM static store to clean up the unmarshalable delegate? appeared first on The Old New Thing .๐The Old New Thing
Code C++ Like a Library Author - Jon Kalb - C++Now 2026๐ฅCppNow
Claude solves Frogman Level 1๐ฅMatt Godbolt
Type-Erased Audio Parameters - A New Approach to an Old Problem - Jan Wilczek - ADC Japan 2026๐ฅaudiodevcon
Bazel releases addressing the eMudhra CA compromiseThe Bazel team has published new releases of Bazel and Bazelisk to address the recent disclosure of the eMudhra intermediate CA private key compromise . The following Bazel releases remove the distrusted eMudhra and Sectigo AAA root CA certificates from the bundled JDK: 7.7.2 8.8.2 9.3.1 10.0.0rc2 If you cannot immediately upgrade to one of the patched releases above (or are using an older, unsupported Bazel release), you can work around the issue by passing --host_jvm_args=-Djavax.net.ssl.trustStore= to point Bazel's JVM at an updated trust store that excludes the distrusted roots. We have also released Bazelisk v1.30.0 , built with Go 1.27.3 to address CVE-2026-111943 . Thanks to community member James Sharpe for bringing this issue to our attention.๐Bazel Blog