General and Desktop

I've now used QThread instead of std::thread and used signal/slots to transfer data from my Listening_thread to main thread. problem solved. Thanks for the helpful replies.

https://github.com/smurfomen/QSerializer The source code can be obtained here.

@xmichelo-0 this placeholder text color method did not have effect at UI first open, only puts some words on the lineEdit field and then delete it, it just work. test on QT 6.2 with MacOS.

@JPolo said in Unable to compile when using QCustomPlot: I use Qt Creator 4.15.0 based on Qt 5.15.2 MSVC2019 That is not necesserilly Qt version you're using (this is the Qt version used to build QtCreator). What Qt version did you install? What is the first error message? Did you do what the tutorial suggests: "To use the shared library in your application, set the define QCUSTOMPLOT_USE_LIBRARY before including the QCustomPlot header."?

Thanks @raven-worx

@JonB Although it is kinda late but l am currently using QT 5.15.2. But also getting same result. I used the drivers from https://github.com/thecodemonkey86/qt_mysql_driver/releases I don't know any other drivers for this

@EddieC Have a look at the new property system in Qt 6: https://www.qt.io/blog/all-about-property-bindings-in-qt-6.2

@Chris-King said in This application failed to start because no Qt platform ...: I am running into this message attempting to run Houdini. Please provide the full, exact message. There are subtly different versions of the message; some include additional details which can help pinpoint the exact issue. Are all these vendors not properly installing their apps? Most vendors probably installed their apps correctly. However, it only takes 1 badly-behaved app to cause DLL Hell and ruin things for everyone else on that PC. You'll need to track down that badly-behaved app and do something about it. Are users expected to modify their installations of these apps using windeployqt? No, users are not expected to do anything. Software developers are expected to provide well-behaved installers.

Nevermind I had the second group in the "New" dialog for Qt Designer collapsed so I didn't see the wizard option. Now I do. Should be easy from here.

@JonB Thanks, I will try that. But at the moment I can't even run the app, because I tried upgrading to 5.15.2.

Of course I figured this out just a few minutes after posting, sorry for wasting your time. Anyone who's interested there is a function in the dialog/widget class called normalGeometry() which holds the unmaximized size of the window.

@thiagohd Hi I dont think I bug report was ever created or it was further looked at.

@Meeuxi This was not the question. I have not used Visual Studio, but I assume when you change a .ui file the project has to rebuild? I am asking whether that happens for the .ui file you say is not reflecting changes in the latest executable?

@Nick-Redwill This is what windeployqt is for...

@HerrWinfried The problem is that VS2022 doesn't return by default the right value for __cplusplus No idea if that's a bug or a feature in VS2022. However, here the solution how to overcome this issue: https://docs.microsoft.com/en-us/cpp/build/reference/zc-cplusplus?view=msvc-170 cheers Greg

@KroMignon said in Parsing JSON file: @jenya7 said in Parsing JSON file: It works. Thank you. But you did not reply to my question... What exactly did not work with your code? AFAIK, there is no difference between temperature.value("Maximum") and temperature["Maximum"]. Yes. It should be the same. Probably I didn't cast it to the right data type.

@django-Reinhard Fortunately I do not distribute any Qt apps, so I have never used them :) But if I did I would be looking at using linuxdeployqt and windeployqt.