Date: Tue, 08 Mar 2005 10:36:26 +0100 (CET)
Message-Id: <20050308.103626.59669447.andrieu at ijm.jussieu.fr>
To: aubineth at ccs.neu.edu
Cc: lablgtk at math.nagoya-u.ac.jp
Subject: Re: tree view models written in ocaml
From: Olivier Andrieu <andrieu at ijm.jussieu.fr>
In-Reply-To: <d0f5hp$dcn$1 at sea.gmane.org>
References: <20050303234255.GA25179 at furbychan.cocan.org>
	<20050304.105749.112609272.andrieu@ijm.jussieu.fr>
	<d0f5hp$dcn$1@sea.gmane.org>
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 Ethan Aubind [Sun, 6 Mar 2005]:
 > If update a row in the model, the tree is only redrawn when clicked
 > on, or when a new row is added.  

It seems like you've stored a mutable caml value in the model (for
instance, a record with mutable fields) and that you're mutating the
value directly. Indeed GTK+ cannot update the view when such changes
happen behind its back.

 > Whats the best way to ensure that the displayed contents of the
 > view is synched w/ the content of the model?  

You can :
 - re-assign the updated value in the model, using GTree.list_store#set
   or GTree.tree_store#set 
or,
 - directly tell the model that a row has been updated by calling
   GTree.model#row_changed

This will make the model emit the "row-changed' signal, to which the
view is connected. It (the view) will then update itself to reflect
the change.

Perhaps calling `view#misc#draw None' will work too, but that's not
very elegant.

-- 
   Olivier