This video compares the multithreading facilities in Qt with those provided by the C++ standard library. Which one has a semaphore class? A thread pool implementation? A movable lock guard? Which one has the most convenient condition variable API?

In this edition, we have: KDAB takes over code browser from woboq - an interview with Olivier Goffart and Till Adam. We also offer the Releases of Qt Creator 5.0 Beta, KD Soap 2.0 and KDDockWidgest 1.4, our Tool of the Month KD Toolbox, Events, Announcements and Resources.

Number 30 in the Qt Widgets and More series, this video address the issue where, if you are doing a larger refactoring involving central files, you might end up recompiling over and over again while fixing just a single source file. In these situations, using Qt Creator's ability to recompile only a single file is very useful. But there's more.

In this video, you will learn about communicating between two threads using Qt signals and slots and what is really happening under the hood when you do that. With the help of didactic diagrams, you will learn different ways to set this all up, including possible pitfalls.

This video will show you how you debug loading of the plugins, using strace on Linux and procmon on Windows.

This video provides answers to the following questions: Can you call methods on an object shared between threads? Can you call the same method in different objects? What about QObject, is it thread-safe?

In the previous episodes, we created and compiled a plugin for Qt designer. The final part missing is to deploy the files in the right directories.This episode discusses the CMake magic that makes that happen.

If you think bool is atomic (and therefore needs no mutex) or if you think volatile is useful in multithreaded programs, you should watch this video. Also, you will learn two different ways to implement asking for a QThread's run() method to finish.

This session from June 2021 offered an interview with Kai Uwe Broulik of KDE, information on the Qt Widgets and More video series and announced the releases of Qt 6.2 Alpha and Qt for MCUs 1.9. This was followed by our Tool of the Month: Range-v3, Event announcements and an addition to our Resources page: 'Practical Programmers Guide to C++20’.

In this fourth episode of our mini series on developing plugins for Qt Designer, we finally implement the classes that make up the plugin.

Making widgets into standalone plugins can be challenging if they weren't carefully designed during development. A solution is restructuring your application into a library plus simple main function using that library. This episode covers everything needed for this architectural transformation to enable proper widget plugin extraction.

After a short presentation of a QThread without an event loop, this video will tell you about threads with an event loop. This allows handling events for objects in secondary threads, which is necessary in order to be able to call slots on these objects.The video then presents two different ways to do this: creating both the thread and the worker at the same level, or encapsulating the thread into the worker.

Years after its creation, C++ is still, and certainly was in 2021, considered by some to be one of the most powerful languages on the planet. For this video we gathered an international panel of C++ experts to give you insights about the C++ language: where it's going and how it got there.

Before you create a plugin, your classes may be configured using constructors like: class Wishes { public: Wishes(bool isExclusive, const QColor& color, QWidget* parent); ... } But how do you handle these parameters if your constructors can't take anything but the parent pointer? This episode will discuss a few different possible solutions.