Dynamic Non-Linear Wizards

#ifndef MAIN_H
#define MAIN_H

#include <QObject>
#include <QWizard>
#include <QAbstractButton>

class MyWiz: public QWizard { Q_OBJECT
public:       void initializePage(int id);
};

class Main : public QObject { Q_OBJECT
public:       Main(QObject *parent = 0);
              ~Main();
public slots: void idChange(int id);
              void click();
private:      MyWiz *wizard;
};

#endif // MAIN_H

#include <QApplication>
#include <QDebug>
#include "main.h"

QWizardPage *createIntroPage(QString text) {
    qDebug()<<"createIntroPage:"<<text;
    QWizardPage *page = new QWizardPage;
    page->setTitle(text);
    return page;
}

void MyWiz::initializePage(int id) { qDebug()<<"initPage:"<<id; }

Main::Main(QObject *parent) : QObject(parent) {
    wizard = new MyWiz;
    connect(wizard,SIGNAL(currentIdChanged(int)),this,SLOT(idChange(int)));

    QAbstractButton *btn = wizard->button(QWizard::NextButton);
    disconnect(btn,SIGNAL(clicked()),wizard,SLOT(next()));
    connect(btn,SIGNAL(clicked()),SLOT(click()));
    connect(btn,SIGNAL(clicked()),wizard,SLOT(next()));

    wizard->setWindowTitle("Trivial Wizard");
    for(int i=0;i<5;i++)
        wizard->addPage(createIntroPage(QString("Page%1").arg(i)));
    wizard->show();
}
Main::~Main() { delete wizard; }

void Main::idChange(int id) { qDebug()<<"idChange"<<wizard->currentId()<<id; }
void Main::click() {
    qDebug()<<"Click"<<wizard->currentId();
    if(wizard->currentId()==1) {
        wizard->removePage(2);
        wizard->setPage(2,createIntroPage("Page2->new"));
    }
}

int main(int argc, char *argv[]) {
    QApplication a(argc, argv);
    Main obj;
    return a.exec();
}