Qt 6

@jsulm I started my app from a terminal after setting the QT_DEBUG_PLUGINS environment variable but I can't see any messages or anything in the output.

@SGaist can you please suggest something ?

Hi @eric_1994, I just stumbled over https://bugreports.qt.io/browse/QTBUG-123012 and wonder if that is related to your problem? Can you update to Qt 6.9?

Please provide a minimal, compilable example of your problem.

Thanks a lot!

@JohanSolo said in There has a the difference about QTransform between qt5 and qt6, How can I do?: if and only if its determinant is different from zero, Yeah, forgot the not, thx & fixed

Occasionally I have seen tiny font on Windows with our own Qt application. This was always fixed by rebooting Windows.

@Gracy The question is pretty old, but i know the answer... First, make sure, the permissions are added. Maybe you are missing the following: https://doc.qt.io/qtcreator/creator-deploying-android.html#editing-manifest-files To check and request permissions you can do: QFuture permission_request = QtAndroidPrivate::requestPermission("android.permission.WRITE_EXTERNAL_STORAGE"); switch(permission_request.result()) { case QtAndroidPrivate::Undetermined: qWarning() << "Permission for writing to the storage undetermined!"; break; case QtAndroidPrivate::Authorized: qDebug() << "Permission for writing to the storage authorized"; break; case QtAndroidPrivate::Denied: qWarning() << "Permission for writing to the storage denied!"; break; }

Could not find a package configuration file provided by "Qt6HostInfo" with any of the following names:

@Axel-Spoerl said in Build error on qt 6.8: gcc --version it say: gcc (GCC) 13.2.1 20240316 (Red Hat 13.2.1-7) Copyright (C) 2023 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

Oops! That was right under my nose, but I still managed to miss it. Many thanks, good sir!

running into this issue years later... for me the line find_package(Qt6 QUIET COMPONENTS Core Gui Widgets Multimedia MultimediaWidgets) will NOT populate the version numbers, only repeating with find_package(QT NAMES Qt6) will finally do.

Thank you very much.

Hi, You realize that using all this static stuff is a really good start to a pretty nightmarish maintenance and debugging experience ?

@JonB Yea, I thought writing a dock/taskbar "Waybar replacement" might be a fun weekend project and a chance to get back into C++ and learn Qt. I never imagined this rabbit hole. Anyway, I guess Wayland is still [relatively?] new and hopefully there will be solutions for these use cases as more major distros go Wayland native. It does give me respect for those implementing entire desktop environments such as KDE Plasma on Wayland since it's now clear all the fire hoops they have to jump through to get this stuff working.

@SandSnip3r said in Qt Graphs. Building 2d plot using c++ only.: Isn't the Graphs moved out of technical preview as of 6.8? Should be but as you can see from OPs question QGraphsView, the C++ API to access the QML backend is mentioned in the documentation but not implemented nor it has it's own documentation page... the links lead to nowhere... :( Maybe use the QML interface for now and handle it like any other hybrid QML/C++ app QGraphs should be 2D and 3D + C++ and QML... but not everything seem to work right now.

@mrkprdo Sorry, my bad. I fixed it.

@hdugzx I never used Design Studio, but there should be a menu like "View" or "Windows". Look in "..." in the top-right corner. You also can check the settings. In QtCreator you can disable/enable menu by pressing Ctrl-Alt-m - maybe it also works in Design Studio.