Date: Wed, 10 Aug 2005 12:53:49 +0900 (JST)
Message-Id: <20050810.125349.79297434.garrigue at math.nagoya-u.ac.jp>
To: shoh at compiler.kaist.ac.kr
Cc: lablgtk at math.nagoya-u.ac.jp
Subject: Re: Two question about selection
From: Jacques Garrigue <garrigue at math.nagoya-u.ac.jp>
In-Reply-To: <42F96DA8.7050003 at compiler.kaist.ac.kr>
References: <42F96DA8.7050003 at compiler.kaist.ac.kr>
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From: SooHyoung Oh <shoh at compiler.kaist.ac.kr>

> I'm planning to update Lablgtk tutorial's "Manageing Selection" part
> as Gtk tutorial http://www.gtk.org/tutorial/ .
> I have two question about how to use "selection" in lablgtk?
> Can anyone help me?
> 
> Q1) How to analysis "ATOM" in Lablgtk?

See the Gdk.Atom module.

> Q2) On "17.3 Supplying the selection", they uses "gtk_selection_owner_set".
> In lablgtk, we can do the same thing with "misc#grab_selection".
> Then how can we do job such as gtk_selection_owner_set(NULL, ...)?
> Do I have to implement "misc#ungrab_selection"
> or is there any method already implmented?

Good point. This is not available.
This often happens when NULL is a special case...
There are various workarounds: specifying the selection to be an empty
string, or destroying the widget which holds the selection.

Note also that the simplest way to handle the selection is to go
through the GData.clipboard class.
Two of them are predefined: GMain.selection and GMain.clipboard.
And there is a method clipboard#clear.
Which by the way means that GMain.selection#clear () should actually
clear the selection anyway :-)

Jacques