Connect cannot convert arg 1 from 'UI:MainWindow *' to 'const QObject *'

  • So in effort to fix my previous problem (link here), I wasn't able to figure out how to get the delegates working, so I instead made interior_paint inherit Mainwindow and changed the ui from private to protected. It's certainly not the prettiest thing, but it'll do until I learn some more. I simply put the connect in the constructor for interior_paint and it should work. However, I get this error:

    error: C2664: 'const': cannot convert argument 1 from 'Ui::MainWindow *' to 'const QObject *'

    and I don't know what's the cause of it. Can someone offer some advice?

  • Lifetime Qt Champion


    Can you you show the code that triggers that error ?

  •  int_DB = new int_paint[size];
                SIGNAL(MainWindow::send_to_int_paint(QString Usubstrate, QString UQuantity, QString UUOM,int UCoats)),
                SLOT(interior_paint::insert_to_database(QString Usubstrate, QString UQuantity, QString UUOM,int UCoats)));

  • Lifetime Qt Champion

    Looks like you are missing an include statement somewhere and you are trying to connect to an array of int_paint ?

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