1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
|
/* GTK - The GIMP Toolkit
* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/*
* Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
* file for a list of people on the GTK+ Team. See the ChangeLog
* files for a list of changes. These files are distributed with
* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
*/
#if !defined (__GTK_H_INSIDE__) && !defined (GTK_COMPILATION)
#error "Only <gtk/gtk.h> can be included directly."
#endif
#ifndef __GTK_OBJECT_H__
#define __GTK_OBJECT_H__
#include <gdkconfig.h>
#include <gtk/gtkenums.h>
#include <gtk/gtktypeutils.h>
#include <gtk/gtkdebug.h>
G_BEGIN_DECLS
/* macros for casting a pointer to a GtkObject or GtkObjectClass pointer,
* and to test whether `object' and `klass' are of type GTK_TYPE_OBJECT.
* these are the standard macros for all GtkObject-derived classes.
*/
#define GTK_TYPE_OBJECT (gtk_object_get_type ())
#define GTK_OBJECT(object) (G_TYPE_CHECK_INSTANCE_CAST ((object), GTK_TYPE_OBJECT, GtkObject))
#define GTK_OBJECT_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GTK_TYPE_OBJECT, GtkObjectClass))
#define GTK_IS_OBJECT(object) (G_TYPE_CHECK_INSTANCE_TYPE ((object), GTK_TYPE_OBJECT))
#define GTK_IS_OBJECT_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GTK_TYPE_OBJECT))
#define GTK_OBJECT_GET_CLASS(object) (G_TYPE_INSTANCE_GET_CLASS ((object), GTK_TYPE_OBJECT, GtkObjectClass))
/* GtkObject only uses the first 4 bits of the flags field.
* Derived objects may use the remaining bits. Though this
* is a kinda nasty break up, it does make the size of
* derived objects smaller.
*/
/**
* GtkObjectFlags:
* @GTK_IN_DESTRUCTION: the object is currently being destroyed. This is used
* internally by GTK+ to prevent reinvokations during destruction.
* @GTK_RESERVED_1: reserved for future use
* @GTK_RESERVED_2: reserved for future use
*
* Tells about the state of the object.
*/
typedef enum
{
GTK_IN_DESTRUCTION = 1 << 0, /* Used internally during dispose */
GTK_RESERVED_1 = 1 << 2,
GTK_RESERVED_2 = 1 << 3
} GtkObjectFlags;
/**
* GTK_OBJECT_FLAGS:
* @obj: the object whose flags are returned.
*
* Gets the #GtkObjectFlags for an object without directly
* accessing its members.
*/
#define GTK_OBJECT_FLAGS(obj) (GTK_OBJECT (obj)->flags)
/* Macros for setting and clearing bits in the object_flags field of GtkObject.
*/
#define GTK_OBJECT_SET_FLAGS(obj,flag) G_STMT_START{ (GTK_OBJECT_FLAGS (obj) |= (flag)); }G_STMT_END
#define GTK_OBJECT_UNSET_FLAGS(obj,flag) G_STMT_START{ (GTK_OBJECT_FLAGS (obj) &= ~(flag)); }G_STMT_END
typedef struct _GtkObjectClass GtkObjectClass;
struct _GtkObject
{
GInitiallyUnowned parent_instance;
/* 32 bits of flags. GtkObject only uses 4 of these bits and
* GtkWidget uses the rest. This is done because structs are
* aligned on 4 or 8 byte boundaries. If a new bitfield were
* used in GtkWidget much space would be wasted.
*/
guint32 GSEAL (flags);
};
struct _GtkObjectClass
{
GInitiallyUnownedClass parent_class;
/* Default signal handler for the ::destroy signal, which is
* invoked to request that references to the widget be dropped.
* If an object class overrides destroy() in order to perform class
* specific destruction then it must still invoke its superclass'
* implementation of the method after it is finished with its
* own cleanup. (See gtk_widget_real_destroy() for an example of
* how to do this).
*/
void (*destroy) (GtkObject *object);
};
/* Application-level methods */
GType gtk_object_get_type (void) G_GNUC_CONST;
void gtk_object_destroy (GtkObject *object);
G_END_DECLS
#endif /* __GTK_OBJECT_H__ */
|
