QListView with checkboxes for viewing of filesystem - qt

Question

It is necessary to list of directories by given path in QListView whith icons and checkboxes, then transmit names of marked folders to the program. For list directories i use code:
#include <QtGui/QApplication>
#include <QFileSystemModel>
#include <QListView>
int main(int argc, char *argv[])
{
QApplication a(argc, argv);
QFileSystemModel model;
QListView listView;
listView.setModel(&model);
listView.setRootIndex(model.setRootPath("C:\\Program Files"));
listView.show();
return a.exec();
}
How to add checkboxes and transmit it after pushing button?
Thanks.

Answer 1

There's nothing you can do that would fit in just a few lines. You can either derive from QFileSystemModel and add a checkbox column, or create a proxy model that will do the same.
Note that you can use built-in selection mechanism to Ctrl-click/⌘-click to expand the selection to multiple items:
//main.cpp
#include <QApplication>
#include <QFileSystemModel>
#include <QGridLayout>
#include <QListView>
#include <QPushButton>
#include <QMessageBox>
class Win : public QWidget
{
Q_OBJECT
QListView * view;
QPushButton * button;
public:
Win(QAbstractItemModel * model, const QModelIndex & idx) :
view(new QListView(this)), button(new QPushButton("List Selection", this))
{
QGridLayout * lay = new QGridLayout;
lay->addWidget(view, 0, 0, 1, 2);
lay->addWidget(button, 1, 0);
setLayout(lay);
view->setSelectionMode(QAbstractItemView::MultiSelection);
view->setModel(model);
view->setRootIndex(idx);
connect(button, SIGNAL(clicked()), SLOT(showSelection()));
}
public slots:
void showSelection() {
QString str;
foreach (QModelIndex i, view->selectionModel()->selectedIndexes()) {
str.append(i.data().toString());
str.append("\n");
}
QMessageBox::information(this, "Selected items", str);
}
};
int main(int argc, char *argv[])
{
QApplication a(argc, argv);
QFileSystemModel model;
Win v(&model, model.setRootPath("/"));
v.show();
return a.exec();
}
#include "main.moc"