In Qt Creator it is possible to run the program clicking the green play button (using PySide6), but not edit the qml file in Design mode, where it gives the error "Line 0: The Design Mode requires a valid Qt kit" inside the design view. I created a project and selected Qt for Python (qml).
But I have installed several gb of the newest Qt version during installation? I have also selected the correct python env in the options.
When I create a non-qml project, but add a .qml file later a popup error says:
"The QML emulation layer (QML Puppet) cannot be built because the Qt version is too old or it cannot run natively on your computer. The fallback emulation layer, which does not support all features, will be used"
The Qt version is 6.2.2 and the OS is Windows 11. It is possible to use design mode in Qt Design Studio.
I meet the same problem and my environment is similar, choose Edit → Preferences and enter the Kits. Then select a Qt version and a kit you like (the type of qmake shall be the same, for instance, both of them is msvc), and remember to apply the changes.
After that, go back to the form editor and it works well. What confused me is that I must repeat the steps above each time I want to use Qt, the config seems to not be saved correctly. (The Qt version is 5.1.2 and the OS is Windows 11)
PS: After selecting the kit, you need to restart Qt.
Related
In Design tab the "Window" is missing.
When I click the Design tab -> pop up three windows. three windows
After I close one -> disappear all of them.window title
It doesn't work when I try to drag and drop basic component's...
I reinstall the Qt Creator but the same thing...
Have a look at the following bugreport https://bugreports.qt.io/browse/QTCREATORBUG-26486
Here are some key points from the comments.
Three things you shouldn't have done:
Enable the QmlDesigner plugin (isn't officially supported by Qt Creator anymore, you can use Qt Design Studio)
Open a non-.ui.qml file in QmlDesigner
Open a file with a QtQuick.Window root element, which is not fully endorsed in QmlDesigner.
Support for Qt 5.15 requires a "kit" with a qml2puppet for Qt 5.15.
This setup is only properly supported and tested in Qt Design Studio.
If you use Qt Creator the puppet will be always built with the same Qt
version as Qt Creator.
QtCreator states are kept in the following locations:
Windows: %APPDATA%\QtProject and %LOCALAPPDATA%\QtProject\QtCreator
Linux: $HOME/.config/QtProject
macOS: $HOME/.config/QtProject
Please review those locations and backup/rename/clean up.
You should find this restores your Qt Creator to 'factory' conditions.
I'm developing one GUI app (among others) in Python with PySide2 and my main editor is VSCode and I'd like to keep it this way - I'm using the standalone Qt Designer for GUI layout calling it from VSCode when necessary.
I see that the full Qt Creator has a way to select couple of different dark modes in its IDE settings, however I see no such possibility in the Qt Designer launched as standalone application.
I develop on Windows 10 by the way and setting its dark mode doesn't change how Qt Designer looks, it keeps its Windows Vista look:).
Is there something that can be done, maybe a command line parameter?
Want to manually install 32-bit versions of Qt 5.7 so that I will be able to deploy my app to not only 32-bit but 64-bit machines as well.
Initially when I installed it on my 64-bit Windows 7 machine, I only selected the 64-bit components and, hence, I can only select the MSVC2015_64 bit kits in Qt Creator to build my app with.
Since I want to deploy my app to a 32-bit Windows 10 machine, I am trying to add the 32-bit Qt versions to my installation; tried through Tools > Options > Build & Run > Add... with no success. Searched for some answer/guide to the documentation and to other online sources but could not find how to achieve this in Windows.
Is it possible to manually add other Qt versions on a current install or is do I have to reinstall Qt? Also, could I simple install Qt with the desired Qt versions on a different directory than the first installation or will that mess up the PATH variables?
You have to launch Qt Maintenance Tool : Start -> Programs -> Qt -> Qt Maintenance Tool.
Skip the Qt login (unless you are using a commercial version of Qt).
Select "Add or remove components" and click yes. You'll be able to select other kits to download and install*.
Then Qt Creator should automatically add those kits, you'll just have to add them to your project : go to project settings once your project is open, and you'll find "Add kit" button in the upper left corner.
*Qt Maintenance Tool may prompt you to update components first if there's a new version available.
Kits are the key to your problem. A kit in Qt is composed of:
Version of Qt (and i'm not talking about Qt creator)
Compiler (you have to choose the correct compiler corresponding to your Qt Version, i will explain that more in detail, below )
Debugger (correct version 32 or 64 bits).
You can install as many versions of Qt as you wish Qt Creator will usually autodetect them all. Don't worry it won't damage your path, you can also install 2 different compilers (MingW and MSVC a.k.a VS compiler for example).
in Qt site : https://www.qt.io/download-open-source/
pick the version or versions of Qt you want to install and install them (the package include Qt Creator so no need to install it twice)
you also download the correct version of your compilers and debbuggers (if you don't already have them) and install them.
Once you've downloaded all the components and installed them, you go to Qt Creator :
Tools -> Options
in the lhs menu select Build & Run
you can go and check Qt Versions, Compiler and debugger to see if everything was auto-detected well.
if it's ok you can then create your kit :
go to the kits Tab
you can either add a new kit, but i prefer cloning an existing one and then edit it.
select the clone and choose the correct compiler, the correct version of Qt and the correct Debugger, rename your kit so you can recognize it. Save and close.
to use the kit you created you have to choose it in the project menu
see the screenshot below :
you can create as many kits as you wish, so you can have different configurations.
QtCreator can handle any number of "kits", where a kit is a combination of compiler + Qt version + (optionally) a deployment target.
See http://doc.qt.io/qtcreator/creator-configuring.html
I should have asked this question before asking this
I am creating a QT app (on MAC) that should use frameworks compiled from qt-everywhere-opensource-src-5.5.1.tgz and not the one that comes with qt-opensource-mac-x64-clang-5.5.0.dmg.
I use QT creator installed by that DMG file and qmake in it somehow links with the frameworks installed by this DMG. (see this for more details)
Whats the legit way of making this QT creator use other framework.
Qt Creator has the concept of build Kits. A kit includes (among other things) a compiler, debugger and Qt version. In the Qt Creator preferences, go to the Build & Run section. Under the Qt Versions tab, ensure that your Qt 5.5.1 built from source is listed there. Then go to the Kits tab and either create a new kit or modify an existing one. Ensure that kit is using your Qt 5.5.1 version.
Once you've got that sorted out, a project can have one or more kits associated with it. From the main window, go to the Projects panel. Near the top of the Build & Run tab of the projects page will be the section where you select the kit(s) for the project. Ensure your project is using the kit you created/modified which uses your Qt 5.5.1. That should be enough to get your project building with your version of Qt instead of the one that comes with Qt Creator. To be absolutely sure, perhaps delete any previous build before you switch kits or even better, create a new build configuration in a new build/output directory for it.
I have multiple installations of Qt4 on my Windows XP SP2 machine and have installed Qt Creator 2.1 today. However, running the project (.pro) files spawns the oldest version of Qt Designer installed (the one installed in 2009 together with the rest of the framework).
Since
I would not like to remove any previous installations of Qt
and for some obscure reason even if I explicitly ask Windows Explorer to always use the version I need it does not
I would like to give up a bit and just sript the needed behaviour in a .bat file like:
e:\path\to\qtcreator.exe %1
This opens Qt Creator, but something seems to prevent it from treating the .pro file properly (in short, the project does not "open" as it should).
Qt documents have a page on the matter at Qt Creator: Using Command Line Options, but it seems to ignore the topic in question.
Since Qt (being as excellent framework as it is) is also known to have its quirks (like that of qmake), I wonder, may be there is an undocumented way to solve my problem?
(Another way to fix the thing would of course be to make the correct version of Qt Designer run, but frankly I'd prefer the "hard-wired" solution since the mechanisms provided by Qt itself are still a bit unreliable.)
The libraries and tools used for a particular project (and a configuration in it) is set in the Projects panel in Qt Creator:
http://doc.qt.io/qtcreator/creator-build-settings.html
Selecting the Qt version to use with a project should force it to run the Designer that's part of the version. If it doesn't, then you should report it as a bug.