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50
51#include <QApplication>
52#include <QFileSystemModel>
53#include <QFileIconProvider>
54#include <QScreen>
55#include <QScroller>
56#include <QTreeView>
57#include <QCommandLineParser>
58#include <QCommandLineOption>
59
60int main(int argc, char *argv[])
61{
62 QApplication app(argc, argv);
63
64 QCoreApplication::setApplicationVersion(QT_VERSION_STR);
65 QCommandLineParser parser;
66 parser.setApplicationDescription("Qt Dir View Example");
67 parser.addHelpOption();
68 parser.addVersionOption();
69 QCommandLineOption dontUseCustomDirectoryIconsOption("c", "Set QFileSystemModel::DontUseCustomDirectoryIcons");
70 parser.addOption(commandLineOption: dontUseCustomDirectoryIconsOption);
71 QCommandLineOption dontWatchOption("w", "Set QFileSystemModel::DontWatch");
72 parser.addOption(commandLineOption: dontWatchOption);
73 parser.addPositionalArgument(name: "directory", description: "The directory to start in.");
74 parser.process(app);
75 const QString rootPath = parser.positionalArguments().isEmpty()
76 ? QString() : parser.positionalArguments().first();
77
78 QFileSystemModel model;
79 model.setRootPath("");
80 if (parser.isSet(option: dontUseCustomDirectoryIconsOption))
81 model.setOption(option: QFileSystemModel::DontUseCustomDirectoryIcons);
82 if (parser.isSet(option: dontWatchOption))
83 model.setOption(option: QFileSystemModel::DontWatchForChanges);
84 QTreeView tree;
85 tree.setModel(&model);
86 if (!rootPath.isEmpty()) {
87 const QModelIndex rootIndex = model.index(path: QDir::cleanPath(path: rootPath));
88 if (rootIndex.isValid())
89 tree.setRootIndex(rootIndex);
90 }
91
92 // Demonstrating look and feel features
93 tree.setAnimated(false);
94 tree.setIndentation(20);
95 tree.setSortingEnabled(true);
96 const QSize availableSize = tree.screen()->availableGeometry().size();
97 tree.resize(availableSize / 2);
98 tree.setColumnWidth(column: 0, width: tree.width() / 3);
99
100 // Make it flickable on touchscreens
101 QScroller::grabGesture(target: &tree, gestureType: QScroller::TouchGesture);
102
103 tree.setWindowTitle(QObject::tr(s: "Dir View"));
104 tree.show();
105
106 return app.exec();
107}
108

source code of qtbase/examples/widgets/itemviews/dirview/main.cpp