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Qt Development

Everything development. From desktop and mobile to cloud. Games, tools, 3rd party libraries. Everything.
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  • This is where all the desktop OS and general Qt questions belong.
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    Z
    How can I upload an entire example project as a ZIP file?

  • The forum for developing everything embedded: Linux, WinCE, Symbian, MeeGo... you name it.
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    SGaistS
    Hi, Static builds require extra steps with regards to plugins. See the static plugins howto.

  • Looking for The Bling Thing(tm)? Post here!
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    M
    Problem: Qt Quick Controls (Button, CheckBox, Switch, etc.) only respond to Space key, not Enter/Return Enter/Return does nothing even when controls have keyboard focus Inconsistent with standard UI behavior across other platforms Is this behavior intentional? Right now we have to add a manual Keys.onPressed workaround to every custom control. It would be great if AbstractButton handled Enter/Return by default for better accessibility and consistency with standard keyboard navigation. Are there any plans to add this in a future Qt release?

  • 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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    R
    aha_1980 Thank you. That will help. I started here, rather than with a bug report, because I was pretty sure the problem was on my side. Despite my confidence in the previous note, I still don't have a solution - my experiments were against builds without PipeWire. Thank you for the link collection. When I've got this a little more solid, I'll look at the development mailing list.

  • Have a question about Qt Creator, our cross-platform IDE, or any of the other tools? Ask here!
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    Axel SpoerlA
    Hi @msauer751, I can't reproduce this with Creator 18.0.1 and Qt 6.10.2. The patch release difference shouldn't be the reason. At first, please try including the Qt stuff first. Maybe some of the project specific includes already hit the pragma, making #include <QObject> toothless. Maybe the include path is broken. You could check this by double clicking on the QObject include statement and see where you land. As a last resort, you can try to #include <qobjectdefs.h> directly. Hammer-fix, a kitten will die.

  • 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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    cristian-adamC
    @masa123 said in Qt Creator 18.0.1 lags for 1-3 sec: I havent done anything after the installation other than setting up the android virtual device. This looks like QTCREATORBUG-27311: QtCreator 7: lag every 10 seconds. Qt Creator has an issue with Android on Windows when is doing some adb startup on the UI thread. Please do update the bug report with the specific details that your development machine has.

  • What can we say - we like games. And you can use Qt to write some. Questions? Ask here.
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    8Observer88
    Debug drawer for Box2D v3 using QPainter It uses b2World_Draw to draw Box2D objects for debugging. You can just download and run it without compiling libs because it include libs for Windows (MinGW) and Android. Source: https://github.com/8Observer8/debug-drawer-qpainter-box2dv3-qt6-cpp [image: 2a9af153-b7d2-40a0-9702-5fdfb79ccf52.png]

  • Discussions and questions on QtWebEngine
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    Hi @JonB , Yes, I confirm that they can access this particular web page using an external web browser. Thanks a lot for the link to the post regarding the profile, I'll check it (note that I already know we are not properly handling the lifecycle of some of our objects, so I'm pretty confident that we'll be able to fix the issue leading to this message... even if I don't know whether it could be the root cause of the freeze).

  • You're using Qt with other languages than C++, eh? Post here!
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    PedromixP
    [image: 88a1678e-2408-4639-81bd-6e737f05f776.png] New version QtJambi 6.10.1 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/

  • Combining Qt with 3rd party libraries or components? Ask here!
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    T
    I've implemented offscreen rendering in our app. Implementation details are in the corresponding PR. Best

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

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    W
    dont use self.ctx.clear in paintGL because its can make your shader into black fill, so you just write ctx.clear in initializeGL like this def initializeGL(self): self.ctx = moderngl.create_context() self.ctx.clear(0,0,0,0)

  • Specific issues when using Qt for WebAssembly

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    F
    The aboutToBlock signal is not launch in wasm because the thread is always running, but the line : QCoreApplication::sendPostedEvents(nullptr, QEvent::DeferredDelete); Indeed call the delete from the deleteLater() Thank you for the help

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

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    Hi Team, We are working on Infineon Traveo T2g platform using QtMCUs 2.8.1 for HMI Implementation and we are using the OnStartUp Image cache policy for all the image assets and by default images are loaded into VRAM on startup, Is there any way to load images into Hyperam instead of VRAM on startup. Thanks, Vignesh.

  • 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