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| |
| /* |
| main.cpp |
| |
| A simple example of how to access items from an existing model. |
| */ |
| |
| #include <QtGui> |
| |
| /*! |
| Create a default directory model and, using the index-based interface to |
| the model and some QLabel widgets, populate the window's layout with the |
| names of objects in the directory. |
| |
| Note that we only want to read the filenames in the highest level of the |
| directory, so we supply a default (invalid) QModelIndex to the model in |
| order to indicate that we want top-level items. |
| */ |
| |
| int main(int argc, char *argv[]) |
| { |
| QApplication app(argc, argv); |
| |
| QWidget *window = new QWidget; |
| QVBoxLayout *layout = new QVBoxLayout(window); |
| QLabel *title = new QLabel("Some items from the directory model", window); |
| title->setBackgroundRole(QPalette::Base); |
| title->setMargin(8); |
| layout->addWidget(title); |
| |
| //! [0] |
| QFileSystemModel *model = new QFileSystemModel; |
| connect(model, &QFileSystemModel::directoryLoaded, [model](const QString &directory) { |
| QModelIndex parentIndex = model->index(directory); |
| int numRows = model->rowCount(parentIndex); |
| }); |
| model->setRootPath(QDir::currentPath); |
| //! [0] |
| |
| //! [1] |
| for (int row = 0; row < numRows; ++row) { |
| QModelIndex index = model->index(row, 0, parentIndex); |
| //! [1] |
| |
| //! [2] |
| QString text = model->data(index, Qt::DisplayRole).toString(); |
| // Display the text in a widget. |
| //! [2] |
| |
| QLabel *label = new QLabel(text, window); |
| layout->addWidget(label); |
| //! [3] |
| } |
| //! [3] |
| |
| window->setWindowTitle("A simple model example"); |
| window->show(); |
| return app.exec(); |
| } |