Installation and Deployment

Hi, Please show your .pro file. That class is part of the core module so it should be available by default unless you modified the QT variable in an unsuitable way. Or disabled Qt in the CONFIG variable.

@Louysa qscreen file ? Can you explain what you did ?

@kisa Hi, I hope you've managed to solve you priblem, but for everyone else looking I wanted to add my solution. I had similar problem on Debian 12. In my case I had to manually add path to qmake file in "Qt Versions" tab, and then I choose my new added version in "Qt version" field, while in settings on your Desktop(default) kit. And that's pretty much it, i was able to select this kit while configurating and build my project

@SGaist Thanks to Guapo for letting me know (to me he'll always be Muy Guapo). I just re-tried the install and it worked as expected. And thanks to SGaist for the link to Qt's announcement about the problem. I feel a ton better seeing that. I almost bailed on Qt.

Uncheck CMake from online installer. Visit https://cmake.org/files/ to download different version of CMake msi files and try. The cmake-3.xx.x-windows-x86_64.msi copy the problem. The cmake-3.xx.x-windows-i386.msi can work with Qt Creator.

Hi and welcome to devnet, Qt is a C++ framework so unless you have written C wrappers around it you will need to build your code a C++. See mixing C and C++ in the iso cpp wiki%3B%20%2F%2F%20one%20way).

@Jigyansu If you want to link with a DLL you need a library .lib file (MSVC) or a .a file (MinGW, if it's C++, or .lib if it's C only) to pass to the linker. Not the DLL. That is required to be found at runtime. If you only want to load the DLL dynamically at runtime, that does not require any library at link time. But it is much harder to call functions in a dynamically-loaded DLL than in one linked with.

@Jimbro said in Slow Download on macOS: @baduymus Facing s https://youtu.be/M7w13VR1xOY I solved the issue and share on my youtube channel I hope it works also to you.

@Tristan-C yes. i solved problem long ago, but can't recall what was solution :-( currently i'm using 5.15.9 in my project and all seems to work really well!

@Taytoo try asking on development mailing list https://lists.qt-project.org/listinfo/development

@RaulJN8 said in Configure completely QT environment (compiler, add libraries and flags): We have to add C:/msys64/mingw64/lib to link correctly. But how I do that? Specify it in your CMakeLists.txt like any other compiler or linker option.

@jsulm That's true... Thank you!!

Same problem here with 6.5.2. Tried different mirrors as well. The issue seems different depending on the mirror as well. [image: 6c374702-b45c-4bb2-a67a-bacb56fd32aa.png] [image: 6bf2d044-4a57-4356-a7b7-fdf148069017.png] [image: ab66caab-2232-4468-9ec9-c28038922bad.png] [image: 8194edc3-4092-43c3-b8cb-60584be3e71f.png]

I also tried some other methods like using the console command the whole time but I just get this dialog. [image: db49f462-29e3-434b-b4f9-c7c5b71ecd2d.png]

And you are really sure your have Xorg up and running ?

I suspected so, that's why I was suggesting to try again with the previous version of the online installer (it's just a hunch).

This error indicates that the path for Qt to load the plugin is incorrect. At this point, the code has already been compiled, so we can debug it and modify some of the code in the loading path.

Unfortunately, this document wont work. I discussed with another guy on youtube and we found the solution. Here is the link for installation and you can find MYSql solution in comment below of video: https://www.youtube.com/watch?v=8kpHgNKPooc

@NK-Pradhan Try another mirror: https://wiki.qt.io/Online_Installer_4.x#Selecting_a_mirror_for_opensource List of mirrors: https://download.qt.io/online/qtsdkrepository/windows_x86/root/qt/Updates.xml.mirrorlist

What @jsulm said: You typically edit and work with .ts files. .qm files are just a binary compressed version of .ts files, optimized to be loaded at runtime. Anyhow, for completeness: You can actually convert .qm files to other file formats with the help of the lconvert command line tool.