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Qt Development

Everything development. From desktop and mobile to cloud. Games, tools, 3rd party libraries. Everything.
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Qt 6.11 is out! See what's new in the release blog

Subcategories

  • This is where all the desktop OS and general Qt questions belong.
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    Long-time user of Qt on Windows but new to developing for Ubuntu. All Windows releases I have used build the releases in separate folders for debug and release - and that has seemed pretty sensible and convenient. I want a similar configuration on Ubuntu, but have failed in my attempts to do this. Does anyone know whether this is possible, and if so, where to find the relevant config details?

  • Looking for The Bling Thing(tm)? Post here!
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    F
    Hi Guys, thanks for replying - I need to enable my email notifications... Also sorry for not being able to provide example code. I am explicitly instancing the InputPanel myself - and not so long ago learned that really only one instance is needed. Still it is a matter of where placing the instance inside the QML hierarchy as Overlays are special, because they are not part of the hierarchical structure. parent: Overlay.overlay did not work in the first place. I am not exactly sure what finally did the trick but it might have been placing the InputPanel as a direct child to the Window (and thus making it a sibling - not a child - to contentItem). Works now. Thanks so much Felix

  • The forum for developing everything embedded: Linux, WinCE, Symbian, MeeGo... you name it.
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    I don't know about this, but I'd give the app manually permission for all files, and see what happens. I remember there being various issues with QUrl, but don't remember details. And, of course, something not working in Android, and even the supposedly evolved and mature Qt 6x in Android, is no surprise...

  • This is a discussion space for

    • for audio / video playback and recording
    • media formats and codecs
    • camera and screen sharing functionality
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    V
    I have been having this same issue with my Bluetooth headset not being detected

  • Have a question about Qt Creator, our cross-platform IDE, or any of the other tools? Ask here!
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    SGaistS
    I remember there was a post not long ago with similar symptoms. Can you try a more recent version of Qt Crestor ?

  • Your Qt just doesn't want to build? Your compiler can't find the libs? Here's where you find comfort and understanding. And help.
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    SGaistS
    Then I would check the cmake bug tracker to see if there's something related there.

  • What can we say - we like games. And you can use Qt to write some. Questions? Ask here.
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    ansifpiA
    [image: b1158623-f24e-4104-894e-84fd254a3468.png] We built the abive 2D game app in Qt QML back in 2013, before Android gaming took off. We implemented X-Y movement, acceleration physics, joystick controls and more, all in QML — a genuinely fun project. But my honest takeaway after ~10 years of Qt work: Qt is not built for games. Its strength is putting a clean UI on top of complex hardware and machinery — industrial systems, automotive HMI, embedded devices. That's where it shines. Games need rich animation pipelines, physics engines, asset tooling and GPU-focused rendering — areas where engines like Unity, Unreal or Godot are far better served. So my suggestion: if you're serious about game development, learn a dedicated game engine. If what actually excites you is engineering — machinery, hardware, instrumentation — then Qt is an excellent fit, and the official Qt Academy courses (qt.io/academy) are a good free starting point.

  • Discussions and questions on QtWebEngine
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    @SGaist the cross compilation of the libraries fixed the prob

  • You're using Qt with other languages than C++, eh? Post here!
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    PedromixP
    New version QtJambi 6.11.1 is available now 🎉. For all who want to create smart UIs🚀 in Java or Kotlin based upon the latest Qt release. https://www.qtjambi.io/ [image: 95a6c11a-f7b2-4a9c-8325-ccfc9c93b3ec.png]

  • For discussion and questions about Qt for Python (PySide & Shiboken)

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    You can create a bug report ( see https://wiki.qt.io/Qt_for_Python/Reporting_Bugs ), but we would need a minimal example to reproduce. At the very least, a stack trace with function calls/source files in text form is needed to see why retrieveMetaObject() is called for a non-QObject. Generally, no guarantees can be given as to how WebEngine interacts with CPython, though. invalidate() is an internal function that should not be used; it invalidates only for classes for which no generated "wrapper class" exists (in shiboken terms), that is, classes with no virtual functions.

  • Specific issues when using Qt for WebAssembly

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    Joe von HabsburgJ
    You can try this : QNetworkAccessManager _manager; _manager.setAutoDeleteReplies(true);

  • Discussions and questions about Qt Quick Ultralite and using Qt on microcontrollers in general

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    I am working on a Qt for MCUs application and currently using OTF font files with the Static font engine. The font quality is good with OTF, but internal flash usage becomes very high. When I use FMP fonts, flash usage is low, but some glyphs do not render properly. Any guidance on the correct approach to move OTF font storage to external memory would be very helpful. Thank you.

  • Combining Qt with 3rd party libraries or components? Ask here!
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    @SGaist Thank you! Sadly I don't know anything about reverse engineering the protocol. I'm just a diecut designer for scrapbooking. I've tried the alternative softwares and they're missing things that I'm used to designing with. This is such a great machine and I didn't want to have to buy a Cricut or Silhouette. I was just hoping to find some sort of patch for this software so that it would stop giving me the check usb connection error code. Thank you for your time!!

  • The forum for discussing the Qt Digital Advertising Platform

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    @nayka Can I use QtDigitalAdvertising on PC applications? Or is it only allowed for use on Android or iOS mobile devices?

  • For discussion and questions about Qt Insight

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    jsulmJ
    @Alejandro_qt_ Here is an example how to build qtbase module: https://stackoverflow.com/questions/50022325/building-qt-module-from-source