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Thread: QStringLiteral between qt4 and qt5

  1. #1

    Default QStringLiteral between qt4 and qt5

    Hello everyone!
    I have a question for you qt coder.
    I am curently working on a qt widget, and I am developing it in two different os (ubuntu and fedora).
    Ubuntu runs on qt5 and fedora on qt4.
    I am trying to make the compilation on both os as smooth as possible.
    So far I was able to achive that by using a couple of macro and variables like
    #if (QT_VERSION < QT_VERSION_CHECK(5 ,0 ,0))
    Now qt 5 put in my ui_mainwindow.h the QStringLiteral which is new in qt5. Googling aroung I saw that if the compiler doesnt support c++ 11 the macro will fall back to QString::fromtUtf8.
    My question is whats the best way to maintain backward compatibility?
    Just replacing all QStringLiteral with QString::fromUtf8 or maybe try with a :
    #define QStringLiteral QString::fromUtf8??
    What you think is best?



  2. #2
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    Default Re: QStringLiteral between qt4 and qt5

    That is not an issue here, ui_mainwindow.h is generated by UIC and the Qt4 UIC will not use QStringLiteral.


  3. #3

    Default Re: QStringLiteral between qt4 and qt5

    Thank you , how can I force the UIC to re-run from qt creator?
    So I can get a new clean ui_mainwindow.h file qt4 compatible?
    I tried to clean and rebuild etc but the ui_mainwindow.h file does not get regenerated

    Added after 43 minutes:

    Alright fixed the problem, desabiling shadow build in the project forced to rebuild the ui_mainwindow.h
    I also paid attention to the :
    ** WARNING! All changes made in this file will be lost when recompiling UI file!

    thanks man
    Last edited by giordi; 8th July 2014 at 12:35.

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