To: sacerdot at cs.unibo.it
Cc: lablgtk at kaba.or.jp
Subject: Re: GTree row selection event
In-Reply-To: <20031107100532.GA17659 at cs.unibo.it>
References: <20031107100532.GA17659 at cs.unibo.it>
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Message-Id: <20031110104118V.garrigue at kurims.kyoto-u.ac.jp>
Date: Mon, 10 Nov 2003 10:41:18 +0900
From: Jacques Garrigue <garrigue at kurims.kyoto-u.ac.jp>
Lines: 35

From: Claudio Sacerdoti Coen <sacerdot at cs.unibo.it>

>  this question should probably be just a Gtk2 question.
>  I have a GTree that I use to render a table and I want to call a
>  call-back when a row is clicked, receiving also the ~event informations
>  to determine whether a single or double clicked occurred.
> 
>  #selection#set_selection_function is not useful: double-clicking on an already
>    selected row does not call the call-back twice (nor I have an event
>    object)

Indeed, the documentation just says it is called when the state of a
row has to be toggled.
 
>  #selection#connect#change does not give me the event object; moreover when
>    I call the selection#get_selected_rows to find the rows selected and
>    no row has been selected so far, I am told that the row 0 is selected
>    (???). And when I click on a row when no row is selected, I receive
>    two times the changed event! (and the first time I get the "row 0" false
>    answer)

Have a look at examples/tree.ml.
To see the new selection, you should use #selection#connect#after#changed.
The rest of the behaviour is at it should be in `BROWSE mode.
If you want to start from an empty selection, you should use `MULTIPLE mode.
  view#selection#set_mode `MULTIPLE

>   How I hate porting code from lablgtk to lablgkt2!

The old tree widget is still available!
The new tree widget is mostly interesting for multi-column trees.
It replaces and improve the old ctree widget, which was not interfaced
because it specification was broken.

        Jacques