main.cpp Example File | Qt WebKit Examples 5.9

Qt 5.9 | Qt WebKit Examples | Fancy Browser Example | main.cpp Example File

Qt 5.9.2 Reference Documentation

# main.cpp Example File

webkitwidgets/fancybrowser/main.cpp

      /****************************************************************************
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      ** Contact: http://www.qt.io/licensing/
      **
      ** 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:
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      #include <QtWidgets>
      #include "mainwindow.h"

      static void showHelp(QCommandLineParser &parser, const QString errorMessage = QString())
      {
          QString text;
          QTextStream str(&text);
          str << "<html><head/><body>";
          if (!errorMessage.isEmpty())
              str << "<p>" << errorMessage << "</p>";
          str << "<pre>" << parser.helpText() << "</pre></body></html>";
          QMessageBox box(errorMessage.isEmpty() ? QMessageBox::Information : QMessageBox::Warning,
              QGuiApplication::applicationDisplayName(), text, QMessageBox::Ok);
          box.setTextInteractionFlags(Qt::TextBrowserInteraction);
          box.exec();
      }

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

          QCommandLineParser commandLineParser;
          commandLineParser.addPositionalArgument(QStringLiteral("url"),
              QStringLiteral("The url to be loaded in the browser window."));
          commandLineParser.process(app);
          QStringList positionalArguments = commandLineParser.positionalArguments();

          QUrl url;
          if (positionalArguments.size() > 1) {
              showHelp(commandLineParser, QStringLiteral("Too many arguments."));
              return -1;
          } else if (positionalArguments.size() == 1)
              url = QUrl::fromUserInput(positionalArguments.at(0));
          else
              url = QUrl("http://www.qt-project.org");

          if (!url.isValid()) {
              showHelp(commandLineParser, QString("%1 is not a valid url.").arg(positionalArguments.at(0)));
              return -1;
          }

          MainWindow browser(url);
          browser.show();
          return app.exec();
      }