Shows the root of a tree

[Alundra]

Hi,
I have a custom open file to only show a folder :
http://zupimages.net/up/15/10/koww.png
That works fine but the problem is once you enter a folder, you can't go on the root because the root is not showed on the tree list.
How shows the root on the tree list ? (I'm using a QTreeView with QFileSystemModel)
Thanks for the help

[wysota]

QTreeView::rootIsDecorated

[Alundra]

I tried but that only hide or show the line but doesn't show the root item.
The user must implements a custom model to have the root item ?

[wysota]

The root index is never visible in a view.

[neuronet]

As wysota said, the root is by design not visible. What you can do is add a single top-level item to your treeView, and make everything else a child of that. It will not be the real root of the tree, but will look like one. :)

[Alundra]

Ok I understand. The only solution is to create a custom model or an easier way exists to achieve that ?

[wysota]

You can use QFileSystemModel starting from one level higher and filter out all top-level items but the one you want using a simple proxy model.

[Alundra]

Ok this solution looks good for one folder, I have question on the same topic :
Is it possible to show 2 folders using QFileSystemModel on the same tree with the root visible (possible custom root name) or a custom model has to be written ?

[wysota]

Do the two folders share a common parent?

[Alundra]

Like on the left (Engine and Game) :
https://docs.unrealengine.com/latest/images/Engine/Content/FBX/BestPractices/FBXBestPractices_MoveOrRename.jpg

[wysota]

That doesn't really answer my question. A simple "yes" or "no" would be much better.

[Alundra]

Completely independent because not on the same place, can be one folder on "c:/" and another on "d:/"

[wysota]

Then making it derived from one model makes no sense. The easiest solution I can see is to have two models and a proxy model that will unite them. It is quite easy to implement.