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  4. [SOLVED] Warning "C4273: Inconsistent dll linkage" when reimplementing QHeaderView::mousePressEvent(QMouseEvent *event)
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[SOLVED] Warning "C4273: Inconsistent dll linkage" when reimplementing QHeaderView::mousePressEvent(QMouseEvent *event)

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  • G Offline
    G Offline
    geracmos
    wrote on last edited by
    #5

    I think that I found out what it was..
    I had two mousePressEvent(QMouseEvent *event) functions in my class.

    My header:
    @class VDatagridView : public QWidget
    {
    Q_OBJECT

    public:
    explicit VDatagridView(QWidget *parent = 0);
    ~VDatagridView();

    protected:
    void mousePressEvent(QMouseEvent *event);
    bool eventFilter(QObject *obj, QEvent *event);
    };@

    My code:
    @void QHeaderView::mousePressEvent(QMouseEvent *event)
    {
    //blah blah
    }

    void VDatagridView::mousePressEvent(QMouseEvent *event)
    {
    //other blah blah
    }@

    Although I tried to erase the second one, the problem kept occuring, until I cleaned the whole project and then everything was ok.

    But shouldn't I be able to have both of them in my class with no problems?

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    • raven-worxR Offline
      raven-worxR Offline
      raven-worx
      Moderators
      wrote on last edited by
      #6

      why do you want QHeaderView::mousePressEvent() declared in your code?
      I mean why with the class specifier of QHeaderView? This just isn't correct.

      I wonder why this is only a warning rather than a error.

      --- SUPPORT REQUESTS VIA CHAT WILL BE IGNORED ---
      If you have a question please use the forum so others can benefit from the solution in the future

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      • G Offline
        G Offline
        geracmos
        wrote on last edited by
        #7

        No ,I have to correct myself..

        The warning shows up even with the
        @VDatagridView::mousePressEvent(QMouseEvent *event) @
        renamed to something new like @VDatagridView::customMousePressEvent(QMouseEvent *event)@

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        • G Offline
          G Offline
          geracmos
          wrote on last edited by
          #8

          raven-worx:

          In my QTableView I use a custom header which inherits QHeaderView.

          I tried to reimplement the QHeaderView::mousePressEvent()
          because that was the only way that I know to get the QEvent::MouseButtonPress
          and use it in my class.

          That's because my own implementation of mousePressEvent() could handle mouse clicks that were outside of the QTableView only.

          Should I consider the solution of eventFilter()?

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

            How does your custom QHeaderView look like ?

            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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            • G Offline
              G Offline
              geracmos
              wrote on last edited by
              #10

              I use the "HierarchicalHeaderView":http://qt-apps.org/content/show.php?content=103154&forumpage=2
              because I need a multiple-level header for my QTableView.

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              • G Offline
                G Offline
                geracmos
                wrote on last edited by
                #11

                Well I think that I have found the solution:

                I erased the reimplementation of
                @QHeaderView::mousePressEvent(QMouseEvent *event)@

                in VDatagridView class and I did that into the HierarchicalHeaderView class which is responsible only for drawing the Headers.
                So when I click on the Header a mousePressEvent occurs in the HierarchicalHeaderView and the QHeaderView::mousePressEvent() is called.
                When I click somewhere else on my ui, then the VDatagridView::mousePressEvent() is called.

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                • raven-worxR Offline
                  raven-worxR Offline
                  raven-worx
                  Moderators
                  wrote on last edited by
                  #12

                  actually you should never have an implementation of
                  @
                  QHeaderView::mousePressEvent(QMouseEvent *event)
                  @
                  anywhere in your code.
                  Instead it should only look like this:
                  @
                  MyClass::mousePressEvent(QMouseEvent *event)
                  {
                  //and call base class implementation if needed INSIDE the reimplementation
                  QHeaderView::mousePressEvent(event)
                  }
                  @
                  Since the methods are virtual the compiler calls the hierarchically most derived method implementation automagically. ;)

                  --- SUPPORT REQUESTS VIA CHAT WILL BE IGNORED ---
                  If you have a question please use the forum so others can benefit from the solution in the future

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                  • G Offline
                    G Offline
                    geracmos
                    wrote on last edited by
                    #13

                    Stupid me..

                    Indeed, this is the way that I have done it..
                    I just did a really bad description above..

                    Thanks a lot!

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                    • F Offline
                      F Offline
                      Ferrel987
                      Banned
                      wrote on last edited by
                      #14
                      This post is deleted!
                      1 Reply Last reply
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