diff options
Diffstat (limited to 'src/widgets/doc/snippets/simplemodel-use/main.cpp')
-rw-r--r-- | src/widgets/doc/snippets/simplemodel-use/main.cpp | 56 |
1 files changed, 31 insertions, 25 deletions
diff --git a/src/widgets/doc/snippets/simplemodel-use/main.cpp b/src/widgets/doc/snippets/simplemodel-use/main.cpp index 62739b1f99..5a3d6ecce0 100644 --- a/src/widgets/doc/snippets/simplemodel-use/main.cpp +++ b/src/widgets/doc/snippets/simplemodel-use/main.cpp @@ -7,55 +7,61 @@ A simple example of how to access items from an existing model. */ -#include <QtGui> +#include <QApplication> +#include <QLabel> +#include <QVBoxLayout> +#include <QWidget> + +#include <QFileSystemModel> +#include <QPalette> + +#include <QDir> +#include <QModelIndex> /*! 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); + QWidget window; + auto *layout = new QVBoxLayout(&window); + auto *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] + auto *model = new QFileSystemModel; + auto onDirectoryLoaded = [model, layout, &window](const QString &directory) { + QModelIndex parentIndex = model->index(directory); + const int numRows = model->rowCount(parentIndex); //! [1] - for (int row = 0; row < numRows; ++row) { - QModelIndex index = model->index(row, 0, parentIndex); + 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. + QString text = model->data(index, Qt::DisplayRole).toString(); //! [2] - - QLabel *label = new QLabel(text, window); - layout->addWidget(label); + // Display the text in a widget. + auto *label = new QLabel(text, &window); + layout->addWidget(label); //! [3] - } + } //! [3] + }; + + QObject::connect(model, &QFileSystemModel::directoryLoaded, onDirectoryLoaded); + model->setRootPath(QDir::currentPath()); +//! [0] - window->setWindowTitle("A simple model example"); - window->show(); + window.setWindowTitle("A simple model example"); + window.show(); return app.exec(); } |