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QStandardItem subclassing?

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  • B Offline
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    Beka
    wrote on last edited by
    #15

    @ bool operator <(const myItem &other) const;
    virtual myItem *clone() const;@

    and, after i setItemPrototype, will it take care of retrieving myItem insted of QStandardItem? or i must reimplement or functions which i am working with?

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    • A Offline
      A Offline
      andre
      wrote on last edited by
      #16

      Are you sure about that space between operator < ?

      And yes, thanks to polymorphism, your own function should be called if it actually is an object of your own type. How do you actually set your items? The prototype is just for editing and things like that. How do you fill your model?

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      • B Offline
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        Beka
        wrote on last edited by
        #17

        no, i delete it

        i fill it with functions setItem or setData

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        • A Offline
          A Offline
          andre
          wrote on last edited by
          #18

          Show, not tell. It is hard to figure out where the mistake in your code is if you don't show your actual code...

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          • B Offline
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            Beka
            wrote on last edited by
            #19

            yes i know, but the code is really big...
            @
            myModel->setItem( row, column, new myItem(QIcon(icon), "some text") );
            myModel->setData( myModel->index(row, column), "text" );
            @

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            • A Offline
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              andre
              wrote on last edited by
              #20

              So, extract the relevant sections yourself, or create a small, self-contained example that shows the problem. Also, when posting code, please use @ tags around your code section (I already updated your post in this case) to improve readability.

              Your code, as far as I can oversee it, looks fine to me. I have no idea why it should fail.

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              • B Offline
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                Beka
                wrote on last edited by
                #21

                Okay thank you, i try to override some other methods on model, which can be the problem, and if it wont wors, i paste the code

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                • B Offline
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                  Beka
                  wrote on last edited by
                  #22

                  I have one more question, if I override operator<() will it be called by QStandardItem::sort() ?? because i was said to override operator<() to sort like we want, but would be it ever called from sort() ??

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                  • A Offline
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                    andre
                    wrote on last edited by
                    #23

                    It should be called from there yes. It is the whole point of the function being there and being virtual.

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                    • B Offline
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                      Beka
                      wrote on last edited by
                      #24

                      I dont know how to reimplement method item, that it will return myItem, i looked into the sourcecodes, but i dont know what to do... a just think about copy data from myModel->item(r,c); but the method return the pointer, and i will then dont return the exact pointer
                      @QStandardItem *QStandardItemModel::item(int row, int column) const
                      {
                      Q_D(const QStandardItemModel);
                      return d->root->child(row, column);
                      }@

                      and i think about the reimplementing the setItem, because i dont know either how to do it :(
                      i dont know what to do... sources doesnt help me much, that are so many functions i cant use

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