forked from AuroraMiddleware/gtk
2747f9d84d
This macro will be moved to a private header in GTK+3. https://bugzilla.gnome.org/show_bug.cgi?id=615666
136 lines
4.6 KiB
C
136 lines
4.6 KiB
C
/* GTK - The GIMP Toolkit
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* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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/*
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* Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
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* file for a list of people on the GTK+ Team. See the ChangeLog
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* files for a list of changes. These files are distributed with
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* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
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*/
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#if !defined (__GTK_H_INSIDE__) && !defined (GTK_COMPILATION)
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#error "Only <gtk/gtk.h> can be included directly."
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#endif
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#ifndef __GTK_OBJECT_H__
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#define __GTK_OBJECT_H__
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#include <gdkconfig.h>
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#include <gtk/gtkenums.h>
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#include <gtk/gtktypeutils.h>
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#include <gtk/gtkdebug.h>
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G_BEGIN_DECLS
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/* macros for casting a pointer to a GtkObject or GtkObjectClass pointer,
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* and to test whether `object' and `klass' are of type GTK_TYPE_OBJECT.
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* these are the standard macros for all GtkObject-derived classes.
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*/
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#define GTK_TYPE_OBJECT (gtk_object_get_type ())
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#define GTK_OBJECT(object) (G_TYPE_CHECK_INSTANCE_CAST ((object), GTK_TYPE_OBJECT, GtkObject))
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#define GTK_OBJECT_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GTK_TYPE_OBJECT, GtkObjectClass))
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#define GTK_IS_OBJECT(object) (G_TYPE_CHECK_INSTANCE_TYPE ((object), GTK_TYPE_OBJECT))
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#define GTK_IS_OBJECT_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GTK_TYPE_OBJECT))
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#define GTK_OBJECT_GET_CLASS(object) (G_TYPE_INSTANCE_GET_CLASS ((object), GTK_TYPE_OBJECT, GtkObjectClass))
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#if !defined (GTK_DISABLE_DEPRECATED) || defined (GTK_COMPILATION)
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/* GtkObject only uses the first 4 bits of the flags field.
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* Derived objects may use the remaining bits. Though this
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* is a kinda nasty break up, it does make the size of
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* derived objects smaller.
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*/
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/**
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* GtkObjectFlags:
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* @GTK_IN_DESTRUCTION: the object is currently being destroyed. This is used
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* internally by GTK+ to prevent reinvokations during destruction.
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* @GTK_RESERVED_1: reserved for future use
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* @GTK_RESERVED_2: reserved for future use
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*
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* Tells about the state of the object.
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*
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* Deprecated: 2.22: Do not re-use #GtkObject flags but use your own variable to
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* store flags.
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*/
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typedef enum
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{
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GTK_IN_DESTRUCTION = 1 << 0, /* Used internally during dispose */
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GTK_RESERVED_1 = 1 << 2,
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GTK_RESERVED_2 = 1 << 3
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} GtkObjectFlags;
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/**
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* GTK_OBJECT_FLAGS:
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* @obj: the object whose flags are returned.
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*
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* Gets the #GtkObjectFlags for an object without directly
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* accessing its members.
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*
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* Deprecated: 2.22: Do not re-use #GtkObject flags but use your own variable to
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* store flags.
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*/
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#define GTK_OBJECT_FLAGS(obj) (GTK_OBJECT (obj)->flags)
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/* Macros for setting and clearing bits in the object_flags field of GtkObject.
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*/
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#define GTK_OBJECT_SET_FLAGS(obj,flag) G_STMT_START{ (GTK_OBJECT_FLAGS (obj) |= (flag)); }G_STMT_END
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#define GTK_OBJECT_UNSET_FLAGS(obj,flag) G_STMT_START{ (GTK_OBJECT_FLAGS (obj) &= ~(flag)); }G_STMT_END
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#endif
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typedef struct _GtkObjectClass GtkObjectClass;
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struct _GtkObject
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{
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GInitiallyUnowned parent_instance;
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/* 32 bits of flags. GtkObject only uses 4 of these bits and
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* GtkWidget uses the rest. This is done because structs are
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* aligned on 4 or 8 byte boundaries. If a new bitfield were
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* used in GtkWidget much space would be wasted.
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*/
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guint32 GSEAL (flags);
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};
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struct _GtkObjectClass
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{
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GInitiallyUnownedClass parent_class;
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/* Default signal handler for the ::destroy signal, which is
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* invoked to request that references to the widget be dropped.
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* If an object class overrides destroy() in order to perform class
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* specific destruction then it must still invoke its superclass'
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* implementation of the method after it is finished with its
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* own cleanup. (See gtk_widget_real_destroy() for an example of
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* how to do this).
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*/
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void (*destroy) (GtkObject *object);
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};
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/* Application-level methods */
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GType gtk_object_get_type (void) G_GNUC_CONST;
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void gtk_object_destroy (GtkObject *object);
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G_END_DECLS
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#endif /* __GTK_OBJECT_H__ */
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