I'll take a look. Thanks ;) Adrien. From: benjamin.vanryseghem.pharo@gmail.com Date: Tue, 12 Apr 2011 13:12:06 +0200 To: pharo-users@lists.gforge.inria.fr Subject: Re: [Pharo-users] Help with TreeListMorph I think you should take a look at expand:to: and siblings in SimpleHierarchicalList ( the TreeListMorph's superclass) I think it's around :) Ben On Apr 11, 2011, at 10:03 PM, Adrien BARREAU wrote:Hi, I'm taking a look at the FileDialogWindow: FileDialogWindow new open. On the left, there is a tree. With the halo, I know it is a TreeListMorph. Here is my question: How can I know what is happening when I click on one of the little arrows which are just on the left of a directory name? With my changes, the subtree is very slow to be displayed and I don't understand what is called. Adrien.