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

[rocklionmba]

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?

[SGaist]

Hi,

Can you you show the code that triggers that error ?

[rocklionmba]

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

[SGaist]

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