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Qt 6

This is where all Qt 6 related questions belong

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  • Read before posting in this category!

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    SGaistS
    And now (incomplete at the time of this post): https://wiki.qt.io/New_Features_in_Qt_6.2
  • qtpropertybrowser with Qt6

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    I think you'd find it easier to work with this PropertyGrid instead, it supports both Qt5 / Qt6 at the same time with a very Minimal and stable API while still being very customizable
  • Having trouble building Qt 6 from source

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    Do any of you know how I can install these dependencies on ubuntu? I've tried pip install which is the general way to do it but doing so would cause conflicts on my OS, and I can't seem to find apt packages that have the equivalent to what I need. any helpful response would be appreciated
  • Qt C++ used for eddyfi capture

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    SGaistS
    Hi and welcome to devnet, The most simple way to do it is to ask the people behind the software you are interested in.
  • Is this object destruction failure?

    Solved layout widget parent & child destructor
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    Christian EhrlicherC
    Don't create widgets and especially layouts on the stack at all to avoid such problems.
  • Custom Widget cannot be added to Qt Designer

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    Thank you for that hint. Maybe I'll get it figured out to get a macOS certificate for Xcode, someday, but I just don't want to spend too much effort on this. ... your link to the bug report system has the singular form not as required the plural... (just for the case you will use for other replies) ;-)
  • How can i change the background of a single tab?

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    i have overridden the paint event to do what i need. thank you very much for your help! it works now
  • Title: Qt Creator + Ninja: ninja: error: failed recompaction: Permission denied

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    Hey, I figured out the issue! The problem was caused by building the main project inside the SuperBuild using ExternalProject_Add while also opening it in the IDE. This caused conflicts with CMake trying to reconfigure the same source twice. The fix is to build the SuperBuild separately to install dependencies, then open and build the main project separately in the IDE with SuperBuild disabled. Thanks!
  • QtMultimedia on Rockchip ARM Boards?

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    Everyone who is trying to cross-compile Qt for Orange Pi 3B can follow this tutorial: https://github.com/vverenich/CrossCompileQtForOpi
  • How can I extract metadata from a music file?

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    Esmaeil_SooanE
    Hi, You can also check out this library: 👉 QAudioTagReader It’s a Qt-friendly wrapper around TagLib for exporting audio tags.
  • QRhi software-rendering example

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    So the solution here is not to use QRhi but the OpenGL api and setting QCoreApplication::setAttribute(Qt::AA_UseSoftwareOpenGL); to force LLVMPipe OpenGL software rendering https://doc.qt.io/qt-6/qtquick-rendercontrol-rendercontrol-rhi-example.html [image: e5a5d0e2-d829-4cd2-be6b-7bafa13d4b4b.png]
  • Threads in QApplication Issue with on Linux cross-compiled Qt v6.9.1

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    Christian EhrlicherC
    So since it's a compiler bug - what should Qt do against it?
  • What of "windowsprintersupport.dll" and "qwindowsvistastyle.dll"?

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    Christian EhrlicherC
    @Sprezzatura said in What of "windowsprintersupport.dll" and "qwindowsvistastyle.dll"?: Well... why is windeployqt adding stuff that I don't need? Because it can't determine if you load these translations or not. The normal app uses translations and therefore also the ones for the Qt libs Why does the documentation mention "printsupport", yet it doesn't appear in the windeployqt output? I would guess you don't use it in your app so windeploy knows this and does not deploy it.
  • How to update CmakeLists.txt for android build from qt5 to qt6?

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    No one has replied
  • Qt Graphs. Building 2d plot using c++ only.

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    BugSleeperB
    @Christian-Ehrlicher Ok! @everyone Another question is , how to remove one line from current list in C++? Some App such as process monitor will frequently add or remove lines in the middle of current list. However, I notice that QML List operations can only add or remove objects from the end. //qqmllist.h AppendFunction append = nullptr; CountFunction count = nullptr; AtFunction at = nullptr; ClearFunction clear = nullptr; ReplaceFunction replace = nullptr; RemoveLastFunction removeLast = nullptr; At this moment, we can clear the graph, and re-add lines. But this is not a nice solution. May be a "removeAt" function or "removeOne" can be adopted for this usage in future. There seems to be extra works for QScatterSeries and other classes from QtCharts to QtGraphs, new class has fewer functions and properties than old one. And, Will multi-Y Axises be supported in future ? For example, we can bind a line series to left axis in Kg or right axis in Meters.
  • Apple Liquid Glass on Qt

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    @raulgd said in Apple Liquid Glass on Qt: Apple Liquid Glass on Qt Unsolved Qt 6 5 posts 4 posters 530 views 2 watching Mark unread Not Watching Oldest to Newest Reply ROffline raulgd wrote on 19 Jun 2025, 20:31 last edited by #1 Hi all, How hard would it be to get Qt 6 to use the native liquid glass UI on Qt? If it's QML I guess a whole new Qt Quick Controls theme would be needed, and also won't take advantage of all the little details and nuances the original liquid glass has, and Qt Widgets also is its own thing right? it's not just a wrapper to call the OS native controls. Qt 6 doesn’t come with Apple’s Liquid Glass UI built in, so you’d need to design a custom Qt Quick Controls theme in QML to get the look. Even then, it won’t perfectly match all the little details of the real thing. Qt Widgets also don’t just use the OS’s native controls, so they’d need their own custom styling too.
  • Installation issues of Qt on Windows Server 2022

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    @SGaist It should normally be like the following: [image: ef0e01c8-280c-4a6e-bada-881e471b2fba.jpg]
  • How to disable linking with Qt6EntryPoint in qmake ?

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    Could anybody provide an example possibly for a project with MFC, msvc and vcproj? How to override the qmake settings from the Qt Tools?
  • Facing issue in installing QT

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    now its failing due to: FAILED: v8_context_snapshot_generator "<>/python-3.8.1-rh7/bin/python3" "<>/qtwebengine/src/3rdparty/chromium/build/toolchain/gcc_link_wrapper.py" --output="./v8_context_snapshot_generator" -- <>/gcc-10.3.0-rocky8/bin/g++ -Wl,--build-id=sha1 -fPIC -Wl,-z,noexecstack -Wl,-z,relro -Wl,-z,now -m64 -Wl,-O2 -Wl,--gc-sections -Wl,-z,defs -Wl,--as-needed -rdynamic -pie -Wl,--disable-new-dtags -L<>/rocky8/harfbuzz-11.3.3/lib64 -o "./v8_context_snapshot_generator" -Wl,--start-group @"./v8_context_snapshot_generator.rsp" -Wl,--end-group -latomic -ldl -lpthread -lrt -lsmime3 -lnss3 -lnssutil3 -lplds4 -lplc4 -lnspr4 -lresolv -ljpeg -lpng16 -lz -lxml2 -lxslt -lm -lexpat -lfreetype -lfontconfig -lharfbuzz-subset -lharfbuzz -ldbus-1 -ldrm -lasound -ludev -Wl,--start-group -Wl,--end-group <>/qt/build/qtwebengine/src/core/Release/x86_64/obj/third_party/blink/renderer/modules/app_banner/libapp_banner.a: error adding symbols: Malformed archive collect2: error: ld returned 1 exit status
  • button on top QVideoWidget

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    DeSGuND
    @JonB read post more once and did through qml thanks an answer