目录视图范例

This example demonstrates the usage of a tree view.

The Dir View example shows a tree view of the local file system. It uses the QFileSystemModel class to provide file and directory information.

    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()

The example supports a number of command line options. These options include:

Application description
-help option
-version option
if the optionc {-c} is specified, the application will not use custom directory options

    QFileSystemModel model;
    model.setRootPath("");
    if (parser.isSet(dontUseCustomDirectoryIconsOption))
        model.iconProvider()->setOptions(QFileIconProvider::DontUseCustomDirectoryIcons);
    QTreeView tree;
    tree.setModel(&model);

声明 model as data model for reading the local filesystem. model.setRootPath("") sets the current folder as the folder from which model will start reading. QTreeView 对象 tree visualizes the filesystem in a tree structure.

    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"));

Sets layout options for animation, indentation, sorting, and sizing of the filesystem tree.

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