Qt5中的QtGui

 /****************************************************************************

  **

  ** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).

  ** Contact: http://www.qt-project.org/legal

  **

  ** This file is part of the examples of the Qt Toolkit.

  **

  ** $QT_BEGIN_LICENSE:BSD$

  ** You may use this file under the terms of the BSD license as follows:

  **

  ** "Redistribution and use in source and binary forms, with or without

  ** modification, are permitted provided that the following conditions are

  ** met:

  **   * Redistributions of source code must retain the above copyright

  **     notice, this list of conditions and the following disclaimer.

  **   * Redistributions in binary form must reproduce the above copyright

  **     notice, this list of conditions and the following disclaimer in

  **     the documentation and/or other materials provided with the

  **     distribution.

  **   * Neither the name of Digia Plc and its Subsidiary(-ies) nor the names

  **     of its contributors may be used to endorse or promote products derived

  **     from this software without specific prior written permission.

  **

  **

  ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

  ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

  ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR

  ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT

  ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

  ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

  ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,

  ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY

  ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

  ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

  ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."

  **

  ** $QT_END_LICENSE$

  **

  ****************************************************************************/

 #include <QtWidgets>

 #include <QTranslator>

 #include <QLocale>

 #include <QLibraryInfo>

  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 *page = new QWizardPage;

      page->setTitle("Registration");

      page->setSubTitle("Please fill both fields.");

      QLabel *nameLabel = new QLabel("Name:");

      QLineEdit *nameLineEdit = new QLineEdit;

      QLabel *emailLabel = new QLabel("Email address:");

      QLineEdit *emailLineEdit = new QLineEdit;

      QGridLayout *layout = new QGridLayout;

      layout->addWidget(nameLabel, , );

      layout->addWidget(nameLineEdit, , );

      layout->addWidget(emailLabel, , );

      layout->addWidget(emailLineEdit, , );

      page->setLayout(layout);

      return page;

  }

  QWizardPage *createConclusionPage()

  {

      QWizardPage *page = new QWizardPage;

      page->setTitle("Conclusion");

      QLabel *label = new QLabel("You are now successfully registered. Have a "

                                 "nice day!");

      label->setWordWrap(true);

      QVBoxLayout *layout = new QVBoxLayout;

      layout->addWidget(label);

      page->setLayout(layout);

      return page;

  }

  int main(int argc, char *argv[])

  {

      QApplication app(argc, argv);

      QString translatorFileName = QLatin1String("qt_");

      translatorFileName += QLocale::system().name();

      QTranslator *translator = new QTranslator(&app);

      if (translator->load(translatorFileName, QLibraryInfo::location(QLibraryInfo::TranslationsPath)))

          app.installTranslator(translator);

      QWizard wizard;

      wizard.addPage(createIntroPage());

      wizard.addPage(createRegistrationPage());

      wizard.addPage(createConclusionPage());

      wizard.setWindowTitle("Trivial Wizard");

  #ifdef Q_OS_SYMBIAN

      wizard.showMaximized();

  #else

      wizard.show();

  #endif

      return app.exec();

  }