QML FolderListModel + TreeView !== tree view

[hlb-schmidt]

not sure if bug or me being stupid...

when i go to https://doc.qt.io/qt-5/qml-qtquick-controls-treeview.html and look at the example screenshot

i see a tree view, with expanding folders. cool, exactly what i want!

then i try to use that with https://doc.qt.io/qt-5/qml-qt-labs-folderlistmodel-folderlistmodel.htm

test.qml:

import QtQuick.Controls 1.4
import Qt.labs.folderlistmodel 2.11

TreeView {
	width: 300
	height: 300
	model: dirModel
	TableViewColumn {
		role: "fileName"
	}
	FolderListModel {
		id: dirModel
		folder: "/etc"
	}
}

but instead the suggested view from the example screenshot, i get:

qmlscene test.qml

• where are those folder triangle icons from the screenshot?! (eg. X11 is a dir)
• nothing happens when i click a folder!?

qml test.qml

• why is here no entries at all?

am i doing something wrong?
bug(s)?

tested with qt5-declarative 5.11.1 on linux.

ps. FWIW, this is in virtualbox, and i do get following uncritical? errors on launch:

libGL error: pci id for fd 12: 80ee:beef, driver (null)
libGL error: No driver found
libGL error: failed to load driver: (null)

[GPBeta]

Hi, please be aware that so-called FolderListModel is typically a ListModel not TreeModel, it's a linear model and be suitable to make use with ListView.

The fileSystemModel object mention in the example is not an instance of FolderListModel as you assume.

As far as I know, there's no pure QML way to get full functionality of TreeView, you have to make your own model as the document of TreeView mentioned:

Data for each row in the TreeView is provided by the model. TreeView accepts models derived from the QAbstractItemModel class.

HOWTO: Simple Tree Model

[hlb-schmidt]

ah! so was my mistake to assume that "Folder" in name suggested a tree. and i should have seen the List in FolderListModel :/

thank you very much for your explanation!

ps. so what i need is a FolderTreeModel, and as i dont have fun in cross-compiling nor c++, ill try again when such qml type exists in qt ;)