QWizard类

QWizardPage *createIntroPage()
{
    QWizardPage *page = new QWizardPage;
    page->setTitle("Introduction");

    QLabel *label = new QLabel("This wizard will help you register your copy "
                               "of Super Product Two.");
    label->setWordWrap(true);

    QVBoxLayout *layout = new QVBoxLayout;
    layout->addWidget(label);
    page->setLayout(layout);

    return page;
}

QWizardPage *createRegistrationPage()
{
    ...
}

QWizardPage *createConclusionPage()
{
    ...
}

int main(int argc, char *argv[])
{
    QApplication app(argc, argv);

#ifndef QT_NO_TRANSLATION
    QString translatorFileName = QLatin1String("qtbase_");
    translatorFileName += QLocale::system().name();
    QTranslator *translator = new QTranslator(&app);
    if (translator->load(translatorFileName, QLibraryInfo::path(QLibraryInfo::TranslationsPath)))
        app.installTranslator(translator);
#endif

    QWizard wizard;
    wizard.addPage(createIntroPage());
    wizard.addPage(createRegistrationPage());
    wizard.addPage(createConclusionPage());

    wizard.setWindowTitle("Trivial Wizard");
    wizard.show();

    return app.exec();
}

        wizard()->setButtonText(QWizard::CustomButton1, tr("&Print"));
        wizard()->setOption(QWizard::HaveCustomButton1, true);
        connect(wizard(), &QWizard::customButtonClicked,
                this, &ConclusionPage::printButtonClicked);

    registerField("evaluate.name*", nameLineEdit);
    registerField("evaluate.email*", emailLineEdit);

void ConclusionPage::initializePage()
{
    QString licenseText;

    if (wizard()->hasVisitedPage(LicenseWizard::Page_Evaluate)) {
        licenseText = tr("<u>Evaluation License Agreement:</u> "
                         "You can use this software for 30 days and make one "
                         "backup, but you are not allowed to distribute it.");
    } else if (wizard()->hasVisitedPage(LicenseWizard::Page_Details)) {
        const QString emailAddress = field("details.email").toString();
        licenseText = tr("<u>First-Time License Agreement:</u> "
                         "You can use this software subject to the license "
                         "you will receive by email sent to %1.").arg(emailAddress);
    } else {
        licenseText = tr("<u>Upgrade License Agreement:</u> "
                         "This software is licensed under the terms of your "
                         "current license.");
    }
    bottomLabel->setText(licenseText);
}

    QWizard wizard;
    wizard.addPage(createIntroPage());
    wizard.addPage(createRegistrationPage());
    wizard.addPage(createConclusionPage());

class LicenseWizard : public QWizard
{
    ...
    enum { Page_Intro, Page_Evaluate, Page_Register, Page_Details,
           Page_Conclusion };
    ...
};

LicenseWizard::LicenseWizard(QWidget *parent)
    : QWizard(parent)
{
    setPage(Page_Intro, new IntroPage);
    setPage(Page_Evaluate, new EvaluatePage);
    setPage(Page_Register, new RegisterPage);
    setPage(Page_Details, new DetailsPage);
    setPage(Page_Conclusion, new ConclusionPage);
    ...
}

int IntroPage::nextId() const
{
    if (evaluateRadioButton->isChecked()) {
        return LicenseWizard::Page_Evaluate;
    } else {
        return LicenseWizard::Page_Register;
    }
}

int EvaluatePage::nextId() const
{
    return LicenseWizard::Page_Conclusion;
}

int RegisterPage::nextId() const
{
    if (upgradeKeyLineEdit->text().isEmpty()) {
        return LicenseWizard::Page_Details;
    } else {
        return LicenseWizard::Page_Conclusion;
    }
}

int DetailsPage::nextId() const
{
    return LicenseWizard::Page_Conclusion;
}

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

int LicenseWizard::nextId() const
{
    switch (currentId()) {
    case Page_Intro:
        if (field("intro.evaluate").toBool()) {
            return Page_Evaluate;
        } else {
            return Page_Register;
        }
    case Page_Evaluate:
        return Page_Conclusion;
    case Page_Register:
        if (field("register.upgradeKey").toString().isEmpty()) {
            return Page_Details;
        } else {
            return Page_Conclusion;
        }
    case Page_Details:
        return Page_Conclusion;
    case Page_Conclusion:
    default:
        return -1;
    }
}

void ConclusionPage::initializePage()
{
    QString licenseText;

    if (wizard()->hasVisitedPage(LicenseWizard::Page_Evaluate)) {
        licenseText = tr("<u>Evaluation License Agreement:</u> "
                         "You can use this software for 30 days and make one "
                         "backup, but you are not allowed to distribute it.");
    } else if (wizard()->hasVisitedPage(LicenseWizard::Page_Details)) {
        const QString emailAddress = field("details.email").toString();
        licenseText = tr("<u>First-Time License Agreement:</u> "
                         "You can use this software subject to the license "
                         "you will receive by email sent to %1.").arg(emailAddress);
    } else {
        licenseText = tr("<u>Upgrade License Agreement:</u> "
                         "This software is licensed under the terms of your "
                         "current license.");
    }
    bottomLabel->setText(licenseText);
}