From: Olivier Andrieu <oandrieu at nerim.net>
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Date: Fri, 13 Oct 2006 10:28:49 +0200
To: Stalkern 2 <stalkern2 at tin.it>
Cc: lablgtk at math.nagoya-u.ac.jp
Subject: Re: How to modify the Gdk.gc of a GDraw.pixmap ?
In-Reply-To: <452EBA91.9000704 at tin.it>
References: <452EBA91.9000704 at tin.it>
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 Stalkern 2 [Thursday 12 October 2006] :
 >
 > Hello to everybody!
 > 
 > I'm in trouble when trying to draw dotted lines and the like.
 > 
 > I have a GDraw.pixmap and I would like to use the function
 > 
 > 	Gdk.GC.set_dashes : Gdk.gc -> offset:int -> int list -> unit
 > 
 > on it.
 > 
 > But how do I access the Gdk.gc of a GDraw.pixmap _directly_?
 > 
 > Shall I create a new GC and then... ?
 > 
 > I feel like there is something that in spite of my copy of ocamlbrowser,
 > I can't browse very clearly yet ;-))
 > 
 > Thx for _any_ hint!

The GDraw.pixmap class has a gc instance variable (that comes from the
parent class, GDraw.drawable). There is no accessor method for this gc
field so I guess one way to do what you want is to subclass
GDraw.pixmap and add your method:
,----
| class my_pixmap o = object 
|   inherit GDraw.pixmap o
|   method set_dashes = Gdk.GC.set_dashes gc
| end
`----

(untested)
-- 
   Olivier