How to overwrite the "next" slot in a QWizard ??

Question

Hi: I'm using a QWizard class, which contains several QWizardPage. For some pages, I need to do something when "Next" button is clicked.

I tried to overwrite the "next" slot in QWizard class, however, it seems this doesn't work. the program still went into the original "next" slot in QWizard class instead the one I implemented.

Does this because of that this next slot is virtual protected? How can I do some things after the next button is clicked?? Thanks for your help.

Follows is the header file of my QWizard class: By the way, the "accept" signal works fine as what I expected.

#ifndef PRIMERWIZARD_H
#define PRIMERWIZARD_H

#include <QWizard>

namespace Ui {
    class PrimerWizard;
}

class PrimerWizard : public QWizard {
    Q_OBJECT
public:
    PrimerWizard(QWidget *parent = 0);
    ~PrimerWizard();
protected slots:
    void next();
    void accept();

protected:
    void changeEvent(QEvent *e);

private:
    Ui::PrimerWizard *ui;
};

#endif // PRIMERWIZARD_H

Can you show the code where you create new wizard instance and connect some signals with its slots?

P.S. I can't leave comments so I've written this as answer. Sorry =)

I create new wizard instance by the QtCreator's wizard (Ha XD) The code is as follows:

PrimerWizard* pW = new PrimerWizard(this);
pW->exec();

And the signal-slot connection of "next" is created by QtCreator, I cannot find where it's actually connected. I think the connection is builded in ui_PrimerWizard.h by the function:

QMetaObject::connectSlotsByName(PrimerWizard);

Answer 1

You are missing the virtual keyword in your function definitions. It won't work unless it is defined exactly like the base class.

Answer 2

Can you show the code where you create new wizard instance and connect some signals with its slots?

P.S. I can't leave comments so I've written this as answer. Sorry =)

Answer 3

the "next" slot cannot be overwrite, however, the "validatePage" function for QWizardPage can, this function will be called when "Next" or "Finish" button is clicked.