Tools

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  SOLVED Qt Creator 4.14 SIGSEGV in design mode
  design mode qt creator 4.14 • • user8408080  

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  It seems like this was a packaging error on Arch Linux, if you are facing this issue, install assimp
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  UNSOLVED qmake and mkspec folder
  • Shakeeb  

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  As the blog article says, it has started with Qt 5.14. What is your current issue ?
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  SOLVED Qt Designer, unable to drag & drop widgets
  • pagoda  

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  @romainOS Please check what @aha_1980 wrote
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  UNSOLVED Exit QtCreator with multiple versions of debug project still running
  • AnneRanch  

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  @AnneRanch Hi You can use Options also. Here i have Qt version 5.15.1 Im asking as if you use really old Qt version, then upgrading Qt version might need some fixes in the code. If its not so old, then often it just works with newer version. Also your Creator is pretty old and the newer versions did bring good things and might be better at closing. At least I have not seen any issues and i use multiple Creators often. But i wanted to know your Qt version you are using as I have had a bit issues with old Qt version and have a brand new Creator detecting it. The reason there is talk about upgrading your OS, is that it has newer versions that one can apt-get. However, it might work just installing a newer one (Creator) , but you might get issues that some OS system files is not the expected versions and then the fun begins.
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  SOLVED Qt Maintenance Tool fails with install/update components: "No package source set for this app.."
  • advm  

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  Hi, Please read the thread that is shown as banner as well as the blog post.
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  UNSOLVED Network error in Qt Maintenance Tool
  • tkansgar  

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  Thanks, I will do so.
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  UNSOLVED Meaning of the purple gear icon for status Qt projects
  • Mulder78  

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  Actually, I can't reproduce the problem of opening a 5.6.3 project in a 5.15.1 as I talked in this topic because I changed my harddisk in the meantime and reinstalled 6.0.0 and 5.6.3 versions only. But now, as you can see on the screenshot below, I have a similar problem when I try to open a 5.15 project in Qt 6.0.0 : But obviously this is normal because Qt 6.0.0 no longer integrates certain modules such as the serialport... As soon as I install 5.15 again I will try to reproduce the problem to give you more informations what exactly did not work. Best regards, Olivier.
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  UNSOLVED using Environment vars in build params?
  • davecotter  

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  UNSOLVED breakpoint makes qtcreator freezing
  • Make it GREAT again  

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  Unfortunately, the debugger used inside Qt Creator on Windows is really, really bad. Initial delays can happen when Qt Creator loads all dlls for your application. Never had to wait for 10 minutes, though (also depends how much your application does itself before hitting this breakpoint). Another thing is that showing the values on the current stack when hitting a breakpoint can take quite long. So, maybe your 10 minutes are mostly a part of displaying the current values. In larger applications this is horrible most of the time. That is why on Windows I use Visual Studio directly as debugger. Use qmake -tp vc YourProject.pro to create Visual Studio project and then run the debugger over there. You can also just attach to a running process so that VS will not recompile your project. This approach will be a lot faster and you are not going to wait 10 minutes.
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  SOLVED Download QT Design Studio
  • hbatalha  

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  Thanks, I actually tried the MaintenanceTool, don't know how I missed that.
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  UNSOLVED lupdate: Can we exclude individual source files from the .ts translation file?
  • Robert Hairgrove  

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  Building on the suggestion given by @sierdzio I will try adding the "-extensions" command to the built-in command in Qt Creator used to run lupdate and remove the "cxx" extension, but keep this in the build options. Then I should be able to rename the source files for the stub to have .cxx extension, and they should be built normally. When building the stub .ts file from the command line, I will include only the files with the .cxx extension. I will post the results here.
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  UNSOLVED gotnewmessage() signal does not emit after sendmessage() signal
  • fari35  

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  Because there's no reason for that to happen. You just connected a signal to another signal. Excuse me for being blunt but: your current code is a mess. Your architecture is wrong on several levels. You seem to want some kind of threaded server inside a GUI while also making it its own client but without any connection. As I already suggested, if you really want to use threads (and you really don't at this stage), read the threaded fortune server example. Keep things clearly separated. Have one server component, then build your GUI to use that component. Look for aggregation VS inheritance.
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  QtCreator - Merging header and source folders in tree view
  • mirswith  

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  Just to push for the same problem: I am a big fan of Qt-Creator, and also of CMake: I use them professionally since many years. In CMake, there are specific syntaxes to set the required project structure, and this has to stay like this (it is not expected to imitate the OS-filesystem structure). However, dividing each project into "Sources", "Headers" and "Other Locations" make the full project much harder to explore. I found myself opening again and again the same file in the OS-filesystem explorer, just because I can't easily find the desired file in the project structure. This is IMHO a good indicative that the Projects-explorer is below expectations. Example of project: client_project |- Header Files | |- Subproject1 | | |- SubSubproject1 | | | |- File1.h | | |- SubSubproject2 | | | |- File2.h | | |- File3.h |- Source Files | |- Subproject1 | | |- SubSubproject1 | | | |- File1.cpp | | | |- File1_bis.cpp | | |- SubSubproject2 | | | |- File2.mm | | |- File3.cpp Important note: FIle1.cpp and File1_bis.cpp both implement File1.h, thus F4 does not allow to navigate easily between them. F2 helps, but do I really need to go to a function that I know is implemented in the desired file to open that file? Just imagine that this project has over 1000 files, and that most structures are collapsed, that you need to scroll about 200 lines to see the matching header and source file (e.g. File1.h to File1_bis.cpp). The tree is supposed to be (as per CMake project): client_project |- Subproject1 | |- SubSubproject1 | | |- File1.h | | |- File1.cpp | | |- File1_bis.cpp | |- SubSubproject2 | | |- File2.h | | |- File2.mm | |- File3.h | |- File3.cpp Simpler to locate files right? If I prefer to split headers and sources, I can easily do it with CMake too (flexibility). Note: This is not the OS-filesystem structure. For instance, SubSubproject2 is only loaded on macOS, while another SubSubproject3 is loaded instead on Windows, and a third on Linux.
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  UNSOLVED QJsonObject validation?
  • SPlatten  

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  @SPlatten If it's in a QJsonObject it's valid, else it wouldn't get there (from text).
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  UNSOLVED Project parsing fails between qmake 3.0 and qmake 3.1 for the same configuration
  • SomeRandomName  

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  https://bugreports.qt.io/browse/QTBUG-89786
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  UNSOLVED Clang Code Model fail(file not found) when using custom complier
  • changnet  

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  UNSOLVED Debugger hangs on macOS
  • davecotter  

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  can everyone please UPVOTE THIS BUG! to upvote: click above link, log in (or create account) if you haven't already, then click here: thanks!
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  SOLVED QListWidget::setItemWidget() with scrollbar crashes?
  • davecotter  

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  i gave up attempting to use QProgressBar and just rolled my own derived from QWidget. works flawlessly.
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  SOLVED Qt Design Studio - Qt Bridge for Figma
  • nsourl  

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  I cannot answer to that one, I am not involved in product releases :-)
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  UNSOLVED Qt Design Studio 2.0 - Linux Mint 19.3 glibc error
  • nsourl  

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  UNSOLVED `Not enough memory` error when extracting archive to mac /Library/Audio/Plug-Ins folder
  • wiccy47  

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  For a bit more context, the package.xml of this component is: <?xml version="1.0" encoding="UTF-8"?> <Package> <DisplayName>MyPlugin</DisplayName> <Description>MyPlugin Plug-in</Description> <Version>0.0.1</Version> <ReleaseDate></ReleaseDate> <Name>com.myorg.myplugin.au</Name> <Script>installscript.qs</Script> <ForcedInstallation>true</ForcedInstallation> <Default>true</Default> <RequiresAdminRights>true</RequiresAdminRights> </Package> The MyPlugin.Component is in the data dir, It is about 8MB I wonder if the not enough memory is caused by incorrect archive. That somehow the 7z archive did just zip the file in data but something much bigger causing the not enough memory error. But I don't really know how to verify this.
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  SOLVED Whoops - lost "project" access...
  • AnneRanch  

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  Alt 0 - alternate zero reopens the (empty) pane then up / down arrow in view/pane bar activates desired view in my case "Projects" SOLVED
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  UNSOLVED Creator: Quickly do something useful with annotation warnings
  • Asperamanca  

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  UNSOLVED Could not parse stylesheet of object 0x********
  • WWebber  

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  @WWebber Widgets don't have "names", at least certainly not your variable name if that's what you mean. (Maybe the message could have written out the optional objectName(), but it is what it is.) This sounds like a warning message? Try setting environment variable QT_FATAL_WARNINGS=1 and then running in debugger, hopefully it will break on warning and you'll get a stack trace which will identify where in your code? Though not sure this will work, because when it comes to parse and finds the error it may not lead back directly to a line in your code at that point, but worth a try. Even if not, you may be able to figure which widget by inspecting its values in the debugger. Let us know....
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  SOLVED Change TargetDirectory
  installer frame installer fw • • Vitali  

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  I did so: Controller.prototype.ComponentSelectionPageCallback = function() { var targetDir = gui.pageById(QInstaller.TargetDirectory).TargetDirectoryLineEdit.text; var files = QDesktopServices.findFiles(targetDir, "*.*"); if (files.length!=0) { installer.setValue("TargetDir", targetDir + "\\" + installer.value("ProductName")); } }
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  SOLVED Visual Studio Qt Plugin: C++/MOC Item Type change
  • WWebber  

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  @SGaist I reported this bug in: https://bugreports.qt.io/browse/QTVSADDINBUG-855
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  UNSOLVED Qt creator: "The code model could not parse an included file..."
  • Nesbit  

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  i am using Qt Creator version 4.11.1 i enabled the Autotoolsprojectmanager plugin i open the xrdp project cloned from the github i see this warning if i open project through Makefile.am, it says that config_ac.h file cannot be found, but the file is just located in project root folder. Then i open the project through Makefile, its ok now.
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  SOLVED Qt creator doesn't launch after restarting on ubuntu 20.04
  • asmmoh  

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  @asmmoh Glad you solved it. So please mark this topic as SOLVED too. Thanks!
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  UNSOLVED clang-tidy
  • Lisamueller  

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  @Lisamueller It's for C++, see https://clang.llvm.org/extra/clang-tidy/
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  UNSOLVED QT Creator Debug Continue
  • WWebber  

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  @mzimmers said in QT Creator Debug Continue: Judging Creator on the basis of how well it mimics VS behavior would be like evaluating a Ferrari on how well it mows lawns. And if there are problems with its behavior, as was mentioned above, you can suggest improvements. Qt listens...try that with Microsoft. They might probably listen, but not fix ;) The reported entry was from 2013. If every little improvement wish takes >7 Years, for what reason I even shall report? On the other hand, I don't see any reason to make a copy of VS - this sounds like re-inventing the wheel again and again. It makes more sense to me to improve the integration of QT in VS.
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  UNSOLVED Qt Creator IntelliSense for QML directory imports
  qml qtcreator intellisense • • haiku  

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  UNSOLVED Can't drag and drop widgets onto UI
  • krstemee  

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  @krstemee Hi Are you sure he didnt drag to the top menu ? Do you have link to video ? Just curious of what you saw :) When I drag and drop widgets like a button onto the UI, when I compile it, it doesn't show in the window. Well the normal cause i have seen is that for some reason some of the build files got into the project folder ( and it will see them first and use the old) So check the project folder ( where the .pro file is) for any files looking like especially any ui_xxxxx files as they are generated and should not be in the project folder. Also check project that the build folder is not pointing to the project folder Pro tip :) You can right click a file to go directly to it
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  UNSOLVED Qt Creator debugger watch <not accessible>?
  • SPlatten  

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  @SPlatten said in Qt Creator debugger watch <not accessible>?: The memory layout for a 32 bit system base address of an instance structure type A, ptr will point to the base address and the ptr is 4 bytes long after that the integer will occupy the next 4 bytes, the double will occupy the next 8 bytes lastly the character will occupy 1 byte. This will be contiguous according to the size of each type in the structure. Actually it doesn't work exactly like that because there's padding and/or alignment the compiler may decide to do, but that's beside the point. memset on the structure will 0 all members of the structure. Yes, and the function working on the structure that expects the said pointer to contain a valid address to a memory block just crashes - what I've illustrated in my example. You'd assumed that methods of a class (which is equivalent to functions taking a reference to a structure as first parameters) are going to handle zero-ed out members, especially if you take into account you're not the one that'd written the functions/methods/structure/class. Usually they won't handle such cases, because you're supposed to abide by the contract the API is. RAII isn't a concept specific to C++, it's a concept that applies to C as well, it's just the recommended way for C++. PS. Think about it like this: "Empty" is not the same as "zeroed out".
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  SOLVED Qt Creator crashing on start-up
  • SPlatten  

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  @KroMignon , thank you, it launched, but does the same, pops up in the launch bar then disappears very quickly. I was in the Qt folder which on my system is: /Users/sy/Qt I then typed: Qt\ Creator.app/Contents/MacOS/Qt\ Creator -noload all -load core Result: sy@Simons-iMac Qt % Qt\ Creator.app/Contents/MacOS/Qt\ Creator -noload all -load core The plugin "core" does not exist. Usage: Qt Creator [OPTION]... [FILE]... Options: -help Display this help -version Display program version -client Attempt to connect to already running first instance -settingspath <path> Override the default path where user settings are stored -installsettingspath <path> Override the default path from where user-independent settings are read -temporarycleansettings Use clean settings for debug or testing reasons -pid <pid> Attempt to connect to instance given by pid -block Block until editor is closed -pluginpath <path> Add a custom search path for plugins -load <plugin> Load <plugin> and all plugins that it requires -load all Load all available plugins -noload <plugin> Do not load <plugin> and all plugins that require it -noload all Do not load any plugin (useful when followed by one or more "-load" arguments) -profile Profile plugin loading -no-crashcheck Disable startup check for previously crashed instance Plugin: Core -color <color> Override selected UI color -theme <default|dark> Choose a built-in theme or pass a .creatortheme file -presentationMode Enable presentation mode with pop-ups for key combos Plugin: Debugger -debug <pid> Attach to local process -debug <executable>[,kit=<kit>][,terminal={0,1}][,sysroot=<sysroot>] Start and debug executable -debug [executable,]core=<corefile>[,kit=<kit>][,sysroot=<sysroot>] Attach to core file -debug <executable>,server=<server:port>[,kit=<kit>][,sysroot=<sysroot>] Attach to remote debug server -wincrashevent <eventhandle:pid> Event handle used for attaching to crashed processes Plugin: Git -git-show <git commit hash> Show given commit hash Plugin: ProjectExplorer -customwizard-verbose Verbose loading of custom wizards -ensure-kit-for-binary <file path> Create kit with architecture matching a given application or library -lastsession Restore the last session <session> Restore a saved session Plugin: QmlDesigner -capture-puppet-stream <capture file> Captures the Qml Puppet stream Plugin: Welcome -notour Do not ask for taking a UI tour on startup However, I then tried: sy@Simons-iMac Qt % Qt\ Creator.app/Contents/MacOS/Qt\ Creator -noload all -load Core Which fixes the issue, core has to be Core. But the only tab showing is Edit, how do I fix? When I tried to open my 'pro' file a dialog with an exclamation icon is displayed with the text: Could not open "/users/sy/XMLMPAM/XMLMPAM.pro.user": Cannot open files of type "application/xml". I then launched the Maintenance Tool then removed everything. Then from my profile I checked for files and folders and found .config, I went into this folder and found the folder QtProject, which contained several Qt Creator specific files, I removed the QtProject folder and its contents then reinstalled Qt. That worked!
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  UNSOLVED QT Designer - Slider with decimal steps
  • Franco G  

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  At the end I found easier to keep the SLider generated by QT Designer and connect to a simple function scaling the values, like this: tempSlider = temperature slider tempSpinBox= double Spin Box for temperature from slider to spinbox self.tempSlider.valueChanged['int'].connect(self.changeTspinBoxValue) def changeTspinBoxValue(self,val): val = float(val / 10) print(val) self.tempSpinBox.setValue(val) and viceversa for spinbox to slider self.tempSpinBox.valueChanged['double'].connect(self.changeTsliderValue) def changeTspinBoxValue(self,val): val = float(val / 10) print(val) self.tempSpinBox.setValue(val) Thanks
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  Copying supporting DLL to DESTDIR
  • WilliamU  

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  Hi, 10 years later. How did you solve this?
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  UNSOLVED Dark mode in standalone Qt Designer?
  • aorcl  

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  @aorcl said in Dark mode in standalone Qt Designer?: The designer integrated into Creator IDE uses its theme This is a completely different application and has nothing to do with Qt designer - I don't think that they're using the same codebase for the ui. Feel free to provide a patch for Qt designer.
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  UNSOLVED Qt Design Studio add 3D font into 3D Editor
  • Jason Rich  

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  UNSOLVED Qt Design Studio shut down suddenly
  • caoc10  

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  SOLVED pro2cmake.py: how to run on Linux?
  • mireiner  

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  @eyllanesc said in pro2cmake.py: how to run on Linux?: @mireiner I think you have incorrectly downloaded the file and you have the HTML, and not the plain code, download from https://code.qt.io/cgit/qt/qtbase.git/plain/util/cmake/pro2cmake.py @eyllanesc Thank you for pointing me to the right download link! But running the python script "pro2cmake.py" from download alone wont work. It has to be setup correctly. The python script "pro2cmake.py" can also be found in your local Qt 6.0 source installation in the "Qt/6.0.0/Src/qtbase/util/cmake" folder. There a tutorial about this subject in the Qt Wiki: "CMake Port/Porting Guide" as mentioned above. Its is very useful and solved my problem: https://wiki.qt.io/CMake_Port/Porting_Guide