treeview show dirs and tableview show files with one filesystemmodel?

playing with this example.
ttp://doc.qt.nokia.com/4.6/model-view-using.html

how can I make the treview display only directories and the table view only files? If I change something in the model with setfilter, both react to it.
thanks

sorry, I mean there is something like QSortFilterProxyModel but that does not have the convenient setFilter for dirs, files etc.

ok found it for those who are interested:
I use two models, one for the treeview (QDirModel) and one for the tableview (QFileSystemModel)
then when the directory is changed in the treeview, I set the setRootPath of the QFileSystemModel

Code:

---

...        
QModelIndex dir = index.sibling(index.row(), 0);
	if (dir != fileView->rootIndex() && dirModel->isDir(dir))
	{
		currentPath = dirModel->filePath(dir);
		treeView->setCurrentIndex(index);
 
		fileModel->setRootPath(currentPath);
		fileView->setRootIndex(fileModel->index(currentPath));
}

---

You could of course subclass the QSortFilterProxyModel as well...