mainwindow.cpp Example File

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  #include <QtWidgets>
  #include "mainwindow.h"

  MainWindow::MainWindow()
  {
      createActions();
      createMenus();
      centralWidget = new FormExtractor(this);
      setCentralWidget(centralWidget);
      setUnifiedTitleAndToolBarOnMac(true);
  }

  void MainWindow::createActions()
  {
      exitAct = new QAction(tr("E&xit"), this);
      exitAct->setStatusTip(tr("Exit the application"));
      exitAct->setShortcuts(QKeySequence::Quit);
      connect(exitAct, SIGNAL(triggered()), this, SLOT(close()));

      aboutAct = new QAction(tr("&About"), this);
      aboutAct->setStatusTip(tr("Show the application's About box"));
      connect(aboutAct, SIGNAL(triggered()), this, SLOT(about()));

      aboutQtAct = new QAction(tr("About &Qt"), this);
      aboutQtAct->setStatusTip(tr("Show the Qt library's About box"));
      connect(aboutQtAct, SIGNAL(triggered()), qApp, SLOT(aboutQt()));
  }

  void MainWindow::createMenus()
  {
      fileMenu = menuBar()->addMenu(tr("&File"));
      fileMenu->addAction(exitAct);

      menuBar()->addSeparator();

      helpMenu = menuBar()->addMenu(tr("&Help"));
      helpMenu->addAction(aboutAct);
      helpMenu->addAction(aboutQtAct);
  }

  void MainWindow::about()
  {
      QMessageBox::about(this, tr("About Form Extractor"),
          tr("The <b>Form Extractor</b> example demonstrates how to "
             "extract data from a web form using QtWebKit."));

  }