Subcategories

• General and Desktop
  

  This is where all the desktop OS and general Qt questions belong.

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  The most you can hope for is to reuse some of the process logic. To do a gui app properly involes analysis and a shift in programming paradigm to event based.

• Mobile and Embedded
  

  The forum for developing everything embedded: Linux, WinCE, Symbian, MeeGo... you name it.

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  @SPlatten
  did you try to run your program with -qws argument as suggested by the log you've posted?
  I assume you are using Qt4? If so you should read this

• QML and Qt Quick
  

  Looking for The Bling Thing(tm)? Post here!

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  Is there any easy way to automatically adjust the window size to fit the content (text, it's a message dialog)?

• Tools
  

  Have a question about Qt Creator, our cross-platform IDE, or any of the other tools? Ask here!

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  Hi @Michael-Uman,

  Do you calll qmake CONFIG+=debug in first place?

  That generates -g compiler option, which has always been enough for me. Why do you need -g3?

  Regards

• Installation and Deployment
  

  Your Qt just doesn't want to build? Your compiler can't find the libs? Here's where you find comfort and understanding. And help.

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  Hi and welcome to devnet,

  One maybe simpler way to do that would be to open the module in Qt Creator and build it using the Android Kit.

• Game Development
  

  What can we say - we like games. And you can use Qt to write some. Questions? Ask here.

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  Hi and welcome to devnet,

  Sounds like QCommandLineParser would be a good start.

• Qt WebKit
  

  Questions about Qt WebKit and related topics? Post here!

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  @Konstantin-Tokarev Thanks for the update. We'd need support on Windows for Assistant, so I guess there is still demand for WebEngine support there. I started this thread: https://lists.qt-project.org/pipermail/development/2019-May/035920.html

• QtWebEngine
  

  Discussions and questions on QtWebEngine

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  I'm using a QtWebEngine to display a Plotly graph in my Qt application (Pyside2, though I don't think that matters). I communicate between my app and the javascript using a QWebChannel, and I load the data from the application into the javascript graphing engine via calls to runJavaScript(). Unfortunately, sometimes when I have a lot of data to plot, my application will crash (really? A crash, not just an error? but I digress...) with the message:

  [74482:775:0522/135240.108745:FATAL:ipc_channel_proxy.cc(540)] Check failed: message->size() <= Channel::kMaximumMessageSize (134731808 vs. 134217728)

  or similar. How can I fix things so this doesn't happen? Is there a better way to transfer large amounts of data from the application side to the JavaScript side than using runJavaScript? If nothing else, what maximum length (since in my testing it doesn't appear to be that 134217728 number) string should I test for before calling runJavaScript so I can give the user a polite error message and tell them to change their parameters rather than crashing?

• Language Bindings
  

  You're using Qt with other languages than C++, eh? Post here!

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  @sierdzio said in how can I use c ++ not qt QUICK / QML?:

  engine.rootContext()->setContextProperty("cpuname", &CpuName);

  its works tnks

• 3rd Party Software
  

  Combining Qt with 3rd party libraries or components? Ask here!

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  @seb_berlin
  you have to recompile Qt yourself though to enable OpenSSL 1.1 support though

  ./configure -opensslv11
• Qt for Python
  

  For discussion and questions about Qt for Python (PySide 2)

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  @LarsR not sure if you are still looking but I have been using OpenCue located on https://github.com/vfxpipeline Now granted it is not pyqt5 but its close enough to use it has a tool to better understand how the MVC could be implemented within pyqt5