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Delete a clicked object from the scene?

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  • SGaistS Offline
    SGaistS Offline
    SGaist
    Lifetime Qt Champion
    wrote on last edited by
    #7

    Hi,

    Pseudo code:
    @
    MyClass::whereItNeedsToBeFunction(){
    // Create the card
    connect(card, SIGNAL(clicked()), this, SLOT(cardClicked());
    }

    void MyClass::cardClicked()
    {
    CardClass *card = qobject_cast<CardClass *>(sender());
    if (card) {
    // do what you want with the card
    }
    }
    @

    Hope it helps

    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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    • M Offline
      M Offline
      Marcius
      wrote on last edited by
      #8

      Thank you again, SGaist! I'll work on this as soon as I get a chance. Before I start though, I'm using visual studio. Would "connect" be recognized?

      EDIT

      Or any other piece of this that's only a part of Qt environment?

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      • SGaistS Offline
        SGaistS Offline
        SGaist
        Lifetime Qt Champion
        wrote on last edited by
        #9

        Since you are already compiling a Qt project with VS, there should not be any problem

        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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        • M Offline
          M Offline
          Marcius
          wrote on last edited by
          #10

          Hm, when I type 'connect' it's not in the pop-up list.

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          • SGaistS Offline
            SGaistS Offline
            SGaist
            Lifetime Qt Champion
            wrote on last edited by
            #11

            Your Card class is not a QObject ?

            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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            • M Offline
              M Offline
              Marcius
              wrote on last edited by
              #12

              Only QGraphicsPixmapItem. I thought though that it derives from QObject

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              • SGaistS Offline
                SGaistS Offline
                SGaist
                Lifetime Qt Champion
                wrote on last edited by
                #13

                No they are not, for their original use case, deriving from QObject would not make sense. If you need signals and slots in a QGraphicsItem there's also QGraphicsObject to have a look at

                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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                • M Offline
                  M Offline
                  Marcius
                  wrote on last edited by
                  #14

                  Oh boy, wish I had known that before hand. Back to rewriting chunks of code

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                  • SGaistS Offline
                    SGaistS Offline
                    SGaist
                    Lifetime Qt Champion
                    wrote on last edited by
                    #15

                    The documentation is your friend ;)

                    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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                    • M Offline
                      M Offline
                      Marcius
                      wrote on last edited by
                      #16

                      Hint taken :) At that point I didn't know what sort of functionality I was going to need, plus I was only starting out with Qt. Oh well, lesson learned :)

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