Also watch out for multiple installations of Qt on the target PC, I think I spot at least 2:
one at ~/software/suis/new/DistributionKit
one at /opt/Qt

Try to remove one of them

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a874e69f-e988-4c75-8657-278cad425a99.jpg

Finally , I have to use the different mirror that the default as listed in: https://download.qt.io/online/qtsdkrepository/windows_x86/root/qt/Updates.xml.mirrorlist

after browsing here and there , I must put the mirror without full path to xml. Instead only url before the /online part.

qt-online-installer-windows-x64-4.8.1.exe --mirror https://qt-mirror.dannhauer.de/

and voila!
ef3627c3-b8b8-4c48-8877-9bc1279f7e57-image.png
b8b101c7-7378-4eb6-a4b9-aaf64c341a0d-image.png

You can modify ControlsExt.qml to do this: https://doc.qt.io/squish/how-to-use-the-qml-extension-api.html#qml-extension-api

Modify the isIgnored function in the qml file.

Banner-Academy-Course-Recap-Dec-24-003.png

Hey Everyone!

We are now at the end of 2024, and I wanted to take a moment to reflect on the year and what we have accomplished together.

Qt Academy has grown significantly this year, with new courses from ourselves and others in the Qt Community, such as KDAB and Spyrosoft. We have also updated and improved existing courses, and we are always looking for feedback on how we can improve the content for you.

Early next year, we will begin wrapping up our beginner QML courses and launch the completed series with a certificate of completion, so stay tuned for that! There will also be a little surprise for those who take the courses as a learning path!

Big thanks to all who have contributed to Qt Academy by creating content and to those who have taken the courses and provided feedback. We have ambitious plans for 2025, and we hope you will join us on this journey!

Let's take a look at the courses from December:

Dive into the essential best practices for writing robust, maintainable, high-performance QML code. This course will equip you with actionable insights and practical examples to elevate your projects and gain a comprehensive understanding of how to write clean, error-resistant QML and leverage advanced language features effectively.

Qt Graphs is Qt's newest module, which visualizes data in both 2D and 3D. This course will help you understand the differences between Qt DataVisualization and Qt Graphs, as well as how to migrate your existing code to the new module. Focusing on the practical steps required for migration, we'll guide you through key changes in CMake configurations, code, and asset handling. By the end of this course, you'll have a solid understanding of how to successfully transition your 3D application and leverage the enhanced features of Qt Graphs. It does not cover the 2D offering of Qt Graphs.

Expand your understanding of different properties and familiarize yourself with components and assets. Use the states view in Qt Design Studio to create different states for your components. This tutorial is for people new to Qt Design Studio. To get the most out of the course, we recommend having a basic knowledge of design tools and how they work. You don't need coding experience; however, any knowledge of CSS (Cascading Style Sheets) will help you.

Explore Qt Design Studio and develop your understanding of the project structure and the difference between qml and UI files. Learn how to create and manage projects and the difference between declarative and imperative programming by creating a simple project. You don't need coding experience; however, this course is ideal for those with a basic understanding of design tools and how they work.

Learn how to create multiple screens in Qt Design Studio and navigate between them. You will also explore how to add transitions, animation, and logic to your screens and view the final result in Qt Design Studio.

We are always looking for feedback on what you would like to see and looking for great people within the community to help us grow.

If you want to stay in touch, visit the academy homepage and sign up for the newsletter! qt.io/academy. You can also view the whole catalog here.

~ Ash

@Redman said in reinterpret_cast for received tcp packets:

01:00:00:00:01:00:01:00:00:00:01:00:00:00:00:00:00:00:01:00:00:00

This is what you'd expect for a packed struct (as you have figures out). It worked before because both sides were using C++ and so both sides were not using packed structs (so much about the "well defined protocol").

In order to not have that problem @J-Hilk is right to write a constructor expecting a QByteArray. For sending you should also pack the members into a QByteArray yourself. This also makes you immune to the order of the members (which is only guaranteed by a very, very recent C++ standard). It is also common practice to order members from biggest to smallest, so you can adhere to alignment rules and still get the most compact representation. This would also solve your problem (on the C++ side; I don't know Python) that you don't have to explicitly pack the struct.

witam, prubuje uruchomic program na innym pc program urychania sie u mnie , najpierw brakował☺o biblotek ale znalazłem na dyskuC w katalogu QT///bin , jak skopuje tam wygenerowany plik exe to on sie uruchamia ale jak skopiuje do innego katalogu z biblotekami to juz sie nie uruchomi tylko wyskakuje komunikat
''this aplikation failedto start because no qt platform plugincould be initialized. reinstalling the aplication may fix fhis problem"

Hi,

This is something you should ask to the Qt Company directly.