main.cpp Example File | Qt Widgets 5.6

Qt 5.6 | Qt Widgets | Dir View Example | main.cpp Example File

Qt 5.6.2 Reference Documentation

# main.cpp Example File

itemviews/dirview/main.cpp

      /****************************************************************************
      **
      ** Copyright (C) 2015 The Qt Company Ltd.
      ** 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:
      **
      ** "Redistribution and use in source and binary forms, with or without
      ** modification, are permitted provided that the following conditions are
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      #include <QApplication>
      #include <QDesktopWidget>
      #include <QFileSystemModel>
      #include <QFileIconProvider>
      #include <QTreeView>
      #include <QCommandLineParser>
      #include <QCommandLineOption>

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

          QCoreApplication::setApplicationVersion(QT_VERSION_STR);
          QCommandLineParser parser;
          parser.setApplicationDescription("Qt Dir View Example");
          parser.addHelpOption();
          parser.addVersionOption();
          QCommandLineOption dontUseCustomDirectoryIconsOption("c", "Set QFileIconProvider::DontUseCustomDirectoryIcons");
          parser.addOption(dontUseCustomDirectoryIconsOption);
          parser.addPositionalArgument("directory", "The directory to start in.");
          parser.process(app);
          const QString rootPath = parser.positionalArguments().isEmpty()
              ? QString() : parser.positionalArguments().first();

          QFileSystemModel model;
          model.setRootPath("");
          if (parser.isSet(dontUseCustomDirectoryIconsOption))
              model.iconProvider()->setOptions(QFileIconProvider::DontUseCustomDirectoryIcons);
          QTreeView tree;
          tree.setModel(&model);
          if (!rootPath.isEmpty()) {
              const QModelIndex rootIndex = model.index(QDir::cleanPath(rootPath));
              if (rootIndex.isValid())
                  tree.setRootIndex(rootIndex);
          }

          // Demonstrating look and feel features
          tree.setAnimated(false);
          tree.setIndentation(20);
          tree.setSortingEnabled(true);
          const QSize availableSize = QApplication::desktop()->availableGeometry(&tree).size();
          tree.resize(availableSize / 2);
          tree.setColumnWidth(0, tree.width() / 3);

          tree.setWindowTitle(QObject::tr("Dir View"));
          tree.show();

          return app.exec();
      }