Same filed names in QWizard

Maluna34

Hello,

I have a QWizard with the first page containing a combo box which will determine the next page.
And the three next pages inherit from each other (A <- B <- C) because B just adds a new field to the APage, and C adds a new field to the BPage.

Wizard(QWidget *parent)
    : QWizard(parent)
{
    setPage(0, new TypePage);
    setPage(1, new APage);
    setPage(2, new BPage);   // BPage inherits from APage
    setPage(3, new CPage);   // CPage inherits from BPage
}


TypePage(QWidget *parent)
    : QWizardPage(parent)
{
    registerField("type", type);
}

int nextId() const
{
    const auto type = field("type").value<Type>();

    switch (type)
    {
        case Type::A: return 1;
        case Type::B: return 2;
        case Type::C: return 3;
        default:      return -1;
    }
}

APage(QWidget *parent)
    : QWizardPage(parent)
{
    registerField("first", firstField);
}

int APage::nextId() const
{
    return -1;
}

BPage(QWidget *parent)
    : APage(parent)
{
    registerField("second", secondField);
}

CPage(QWidget *parent)
    : BPage(parent)
{
    registerField("third", thirdField);
}

But I have the following error:
QWizardPage::addField: Duplicate field 'first'

As we will never have A or B or C at the same time, it's not possible to use the same field name?
Do I have to create the pages dynamically, or there is no other solution than override field names in the subclasses?

Thanks for your help!!

Pl45m4

@Maluna34 said in Same filed names in QWizard:

But I have the following error:
QWizardPage::addField: Duplicate field 'first'
As we will never have A or B or C at the same time, it's not possible to use the same field name?

Because in A's constructor you call registerField("first") and every derived class from A (i.e. B and C) will call A's constructor too

BPage(QWidget *parent)
: APage(parent)
{
registerField("second", secondField);
}

So it tries to register the page first a second time, when you actually want to register the second (B).

Maluna34

@Pl45m4
Thanks for your help!

Yes I know why I have this error.
But in this case how can I fix it, knowing that I'm using inheritance between my pages.

JonB

@Maluna34
I don't see why you/one would use inheritance between your pages. Not doing so would avoid the issue.