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From: Stalkern 2 <stalkern2 at tin.it>
Reply-To: stalkern2 at tin.it
To: lablgtk at kaba.or.jp
Subject: Trees, subtrees and tree_items
Date: Thu, 23 Jan 2003 21:43:06 +0100
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Message-Id: <200301232143.06561.stalkern2 at tin.it>

Hello to everybody.
I'm still working on my tree and looking for some things to be sure about.
In particular, I wanted to write a basic function adding a tree_item child to 
a tree, and a basic function adding a sibling brother to a tree_item.

So I've written
let add_new_child_element (aCandidateParentTree: GTree.tree) aNewElementLabel 
= GTree.tree_item ~label:aNewElementLabel ~packing:(aCandidateParentTree 
#insert ~pos:0) ();;

while I can't write a function for adding a sibling element, because I can't 
understand how to find the parent of the start element. In other 
implementations of Gtk there is a method "parent" but I can't see it in 
module GTree...

Furthermore, I wonder whether are these statement right:
	1) A tree is made of tree_items.
	2) The name "subtree" stands for the container of such tree_items.
	3) Both subtree and tree_items can be sibling children of either a tree or a 
subtree.
	4) A tree is a orphan subtree.
	5) It is NOT possible to turn a tree_item without a subtree in a tree_item 
with a subtree, but it is possible to turn a tree_item into a subtree and 
viceversa
	6) A newly created subtree does NOT require to be filled with a child 

Actually I think that I'm confusing the Gtk tree structure with the filesystem 
one, and I tend to see a tree as the Root / and subtrees as dirs. Am I right 
in doing so?

Any hint would be appreciated.
TIA
Ernesto
PS I'm thinking that I came by chance to a programming place where only the 
braves go.