main.cpp Example File

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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();
  }