From: Stalkern 2 <stalkern2 at tin.it>
Reply-To: stalkern2 at tin.it
To: lablgtk at kaba.or.jp
Subject: Re: About automatic column sorting and right-click detection
Date: Fri, 19 Dec 2003 15:50:35 +0100
References: <200312171132.49128.stalkern2 at tin.it> <16352.20548.48550.69416 at akasha.ijm.jussieu.fr>
In-Reply-To: <16352.20548.48550.69416 at akasha.ijm.jussieu.fr>
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Il  Wednesday 17 December 2003 13:47, Olivier Andrieu ha scritto:
>  > 2) How do I recognize a right-clicking on a button or a drawing
>  >    area? I'm getting a bit puzzled by events and signals (and types
>  >    with type variables like GtkSignal.t)
>
> All event-related methods and signals are in an #event sub-object. So,
> with
>  button#event#connect#button_press callback
> you should be able to detect righ-clicks.
>
> Note that sometimes you have to modify the event mask so that the
> events you're interested in are reported : button#event#add .

I'm trying to work out right-clicking driven actions on a GTree.view.
However, I'd need to set my ideas clearer about these issues:

	1_ GTree.tree (and GList.clist, and several classes in GBin) has a #event 
subobject, but GTree.view has not

	2_ If I set a event_box besides setting GTree.view, and I pack GTree.view in 
it, I "hide" it so the "button pressed" event never reaches it

	3_ The example	
http://www.gtkmm.org/gtkmm2/docs/tutorial/html/ch08s07.html#id2879790
suggests wrapping the default handler for GTree.view. I'd love to do so, but 
where is it? If callbacks where all event-to-unit functions, it'd be so easy 
to overload them, but when they're unit-to-unit functions, what can be done?

	4_ To connect a signal to an object, one can use GtkSignal.connect etc.
To create (well, pick in a list) an event, one can use GdkEvent.create. But 
how do I create a Signal? How do I listen to an event and have it trigger the 
emission of that signal?

Actually, I can not understand whether I can do that with the standard 
distribution of LablGtk2.2. Everything seems so close... yet so far.

T I A for any advice

Ernesto