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QVariant and Pointers

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  • I Offline
    I Offline
    isaacEnrique
    wrote on last edited by
    #1

    Greetings.

    I wonder if I can use QVariant to store pointers to a subclass of QGraphicsObject. Overall, I wonder if you can store pointers into QVariant.

    Isaac Pérez
    Programming is understanding.

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    • SGaistS Offline
      SGaistS Offline
      SGaist
      Lifetime Qt Champion
      wrote on last edited by
      #2

      Hi,

      Yes you can, but you have to register it using Q_DECLARE_METATYPE

      Interested in AI ? www.idiap.ch
      Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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      • A Offline
        A Offline
        alex_malyu
        wrote on last edited by
        #3

        As it was said above you can, but I would advice against it.
        I simply do not see any design reason to do it
        and it is definitely will be less efficient, readable and more difficult to maintain than normal pointer usage.
        Also all QVariant usage cases do not make sense for pointers such as
        conversion to different types or serialization.

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