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General and Desktop

This is where all the desktop OS and general Qt questions belong.
83.4k Topics 456.4k Posts
  • When LOG4QT_VERSION_STR not declare error will come ?

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    @jsulm Sorry i can not write whole file here. but part which i include in that i mention below: include(/home/man/WORK_S/Project/24july21_log/proj/trunk/Log4Qt-1.4.2/src/log4qt/log4qt.pri)
  • QProcess revisted...

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    SPlattenS
    @JonB , found the issue, stupid but you have to add --databases to the command line.
  • How to parse QString

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    J
    Thank you.
  • QT internal functions are using high CPU when Application is Idle.

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    Hi Kent, Is their any way where we can increase and decrease the QT internal timer so that its give a buffer in between that?
  • put "readAllStandardOutput()" result in Qstring variable

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    J
    right ! my mistake !thanks
  • QProcess not working.

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    SPlattenS
    @JonB I will investigate now.
  • This topic is deleted!

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  • Qt::opcua Rpi

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    M
    data, time, and timezone must be the same on RPI and kepware OPC server :P.
  • libmysqlclient.so mismatch on fedora 33

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    jsulmJ
    @ocgltd said in libmysqlclient.so mismatch on fedora 33: Is this a bug? No, it just means that Qt MySQL plug-in was built using older MySQL version...
  • QFileDialog and network resources

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    SPlattenS
    @Kent-Dorfman , thank you, I've noticed that when I use QFileDialog::getExistingDirectory which I use elsewhere, this does include all the locations that are missing from the instance created with QFileDialog, sorry I missed the way I an invoking the original is just with show.
  • How top place a Image incide a custom dial without using Qml

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    @mrjj I got the output bro... Thankyou ...
  • Qt Charts can not set point to point line Series?

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  • This topic is deleted!

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  • std::filesystem crashes my app

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    @SGaist Are you starting it ? The command line ? from Qt Creator
  • Converting QByteArray to QString

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    @Sina-Ranjkesh-zade said in Converting QByteArray to QString: For "standard input" if you mean input arguments of the process, I got this error: No, I meant standard input. That is , the python program reads from a terminal and accepts input just as if you typed it (except it is the Qt program sending that input). The Qt program can send a command to the python program, send the data it needs, and read the result (if there is one) back on the python program's standard output. Or you can used shared memory, or a socket, or files, or do whatever the python program is doing in the Qt program...
  • QDataStream and long double

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    Kent-DorfmanK
    AUTOSAR-A0-4-2 rule for safety critical c++ applications: Type long double shall not be used. The width of long double type, and therefore width of the significand, is implementation defined.
  • Qt Debug Symbols

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    Chris KawaC
    As the name and description suggest - installs debugging symbols (pdb files on Windows) that you can use to debug Qt Creator itself.
  • I would need someone to teach me some things about QScrollArea.

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    SGaistS
    I gave you the full chain of inheritance back to QWidget. Yes you can put a layout on an QScrollArea. As already said by @Pl45m4, it's not what you do when you want to use QScrollArea to manage a widget bigger than for example the screen. Still, there might be cases where putting something in a layout on a QScrollArea could make sense. However I do not have an example at hand.
  • QAudioDecoder not emitting signals

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    okay turns out i wasn't creating the thread correctly. when i switched to "worker thread" style as explained here, it all started working. :)
  • QLayouts in a QScrollarea

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    @SGaist thanks for that. It's just an example you know. But all the same, I will keep this in mind.