/src/wrappers/gtk/library/color_set_callback.e

 1indexing
 2	description: "Callback for the color-set signal"
 3	copyright: "[
 4					Copyright (C) 2006 Paolo redaelli, Anthony Lenton, eiffel-libraries team,  GTK+ team and others
 5					
 6					This library is free software; you can redistribute it and/or
 7					modify it under the terms of the GNU Lesser General Public License
 8					as published by the Free Software Foundation; either version 2.1 of
 9					the License, or (at your option) any later version.
10					
11					This library is distributed in the hope that it will be useful, but
12					WITHOUT ANY WARRANTY; without even the implied warranty of
13					MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14					Lesser General Public License for more details.
15
16					You should have received a copy of the GNU Lesser General Public
17					License along with this library; if not, write to the Free Software
18					Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
19					02110-1301 USA
20				]"
21	license: "LGPL v2 or later"
22	date: "$Date:$"
23	revision "$Revision:$"
24
25class COLOR_SET_CALLBACK
26
27inherit
28	CALLBACK
29		redefine
30			object
31		end
32
33insert G_OBJECT_FACTORY [GTK_COLOR_BUTTON]
34
35creation make
36
37feature
38	object: GTK_COLOR_BUTTON
39
40feature
41
42	callback (instance: POINTER) is
43		do
44			-- The following is written with the implicit requirement 
45			-- that object actually has an Eiffel wrapper.
46			object := wrapper(instance)
47			procedure.call ([object])
48		end
49
50	callback_pointer: POINTER is
51		do
52			Result := get_callback_pointer ($callback)
53		ensure
54			Result.is_not_null
55		end
56
57	connect (an_object: GTK_COLOR_BUTTON; a_procedure: like procedure) is
58		do
59			handler_id := g_signal_connect_closure (an_object.handle,
60													 signal_name.to_external,
61													 handle,
62													 0 -- i.e. call it before default handler
63													 )
64			procedure := a_procedure
65		end
66
67	signal_name: STRING is "color-set"
68
69	procedure: PROCEDURE [ANY, TUPLE[GTK_COLOR_BUTTON]]
70
71end