Remove GtkObject completely

docs/reference/gtk/gtk3.types

@@ -93,7 +93,6 @@ gtk_message_dialog_get_type
 gtk_misc_get_type
 gtk_mount_operation_get_type
 gtk_notebook_get_type
-gtk_object_get_type
 gtk_offscreen_window_get_type
 gtk_orientable_get_type
 gtk_page_setup_get_type

gtk/Makefile.am

@@ -244,7 +244,6 @@ gtk_public_h_sources =          \
 	gtkmodules.h		\
 	gtkmountoperation.h     \
 	gtknotebook.h		\
-	gtkobject.h		\
 	gtkoffscreenwindow.h	\
 	gtkorientable.h		\
 	gtkpagesetup.h		\
@@ -512,7 +511,6 @@ gtk_base_c_sources =            \
 	gtkmodules.c		\
 	gtkmountoperation.c     \
 	gtknotebook.c		\
-	gtkobject.c		\
 	gtkoffscreenwindow.c	\
 	gtkorientable.c		\
 	gtkpagesetup.c		\

gtk/gtk.h

@@ -127,7 +127,6 @@
 #include <gtk/gtkmodules.h>
 #include <gtk/gtkmountoperation.h>
 #include <gtk/gtknotebook.h>
-#include <gtk/gtkobject.h>
 #include <gtk/gtkoffscreenwindow.h>
 #include <gtk/gtkorientable.h>
 #include <gtk/gtkpagesetup.h>

gtk/gtk.symbols

@@ -2067,13 +2067,6 @@ gtk_notebook_set_action_widget
 #endif
 #endif
 
-#if IN_HEADER(__GTK_OBJECT_H__)
-#if IN_FILE(__GTK_OBJECT_C__)
-gtk_object_destroy
-gtk_object_get_type G_GNUC_CONST
-#endif
-#endif
-
 #if IN_HEADER(__GTK_OFFSCREEN_WINDOW_H__)
 #if IN_FILE(__GTK_OFFSCREEN_WINDOW_C__)
 gtk_offscreen_window_get_type G_GNUC_CONST
@@ -4361,6 +4354,7 @@ gtk_widget_get_margin_top
 gtk_widget_set_margin_top
 gtk_widget_get_margin_bottom
 gtk_widget_set_margin_bottom
+gtk_widget_in_destruction
 #endif
 #endif
 

gtk/gtkadjustment.h

@@ -31,7 +31,6 @@
 #ifndef __GTK_ADJUSTMENT_H__
 #define __GTK_ADJUSTMENT_H__
 
-#include <gtk/gtkobject.h>
 #include <gdk/gdk.h>
 
 G_BEGIN_DECLS

gtk/gtkarrow.c

@@ -48,6 +48,7 @@
 #include <math.h>
 #include "gtkarrow.h"
 #include "gtksizerequest.h"
+#include "gtktypeutils.h"
 #include "gtkprivate.h"
 #include "gtkintl.h"
 

gtk/gtkbbox.c

@@ -51,6 +51,7 @@
 #include "gtkorientable.h"
 #include "gtkprivate.h"
 #include "gtksizerequest.h"
+#include "gtktypeutils.h"
 
 #include "gtkintl.h"
 

gtk/gtkbindings.c

 /* GTK - The GIMP Toolkit
  * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
  *
- * GtkBindingSet: Keybinding manager for GtkObjects.
+ * GtkBindingSet: Keybinding manager for GObjects.
  * Copyright (C) 1998 Tim Janik
  *
  * This library is free software; you can redistribute it and/or
@@ -34,6 +34,7 @@
 
 #include "gtkbindings.h"
 #include "gtkkeyhash.h"
+#include "gtktypeutils.h"
 #include "gtkwidget.h"
 #include "gtkrc.h"
 
@@ -340,7 +341,7 @@ binding_ht_lookup_entry (GtkBindingSet  *set,
 }
 
 static gboolean
-binding_compose_params (GtkObject       *object,
+binding_compose_params (GObject         *object,
 			GtkBindingArg	*args,
 			GSignalQuery	*query,
 			GValue	       **params_p)
@@ -469,7 +470,7 @@ binding_compose_params (GtkObject       *object,
 
 static gboolean
 gtk_binding_entry_activate (GtkBindingEntry *entry,
-			    GtkObject	    *object)
+			    GObject	    *object)
 {
   GtkBindingSignal *sig;
   gboolean old_emission;
@@ -593,7 +594,7 @@ gtk_binding_set_new (const gchar *set_name)
 
 /**
  * gtk_binding_set_by_class:
- * @object_class: a valid #GtkObject class
+ * @object_class: a valid #GObject class
  *
  * This function returns the binding set named after the type name of
  * the passed in class structure. New binding sets are created on
@@ -604,10 +605,10 @@ gtk_binding_set_new (const gchar *set_name)
 GtkBindingSet*
 gtk_binding_set_by_class (gpointer object_class)
 {
-  GtkObjectClass *class = object_class;
+  GObjectClass *class = object_class;
   GtkBindingSet* binding_set;
 
-  g_return_val_if_fail (GTK_IS_OBJECT_CLASS (class), NULL);
+  g_return_val_if_fail (G_IS_OBJECT_CLASS (class), NULL);
 
   if (!key_id_class_binding_set)
     key_id_class_binding_set = g_quark_from_static_string (key_class_binding_set);
@@ -671,12 +672,12 @@ gboolean
 gtk_binding_set_activate (GtkBindingSet	 *binding_set,
 			  guint		  keyval,
 			  GdkModifierType modifiers,
-			  GtkObject	 *object)
+			  GObject	 *object)
 {
   GtkBindingEntry *entry;
   
   g_return_val_if_fail (binding_set != NULL, FALSE);
-  g_return_val_if_fail (GTK_IS_OBJECT (object), FALSE);
+  g_return_val_if_fail (G_IS_OBJECT (object), FALSE);
   
   keyval = gdk_keyval_to_lower (keyval);
   modifiers = modifiers & BINDING_MOD_MASK ();
@@ -1052,7 +1053,7 @@ gtk_binding_set_add_path (GtkBindingSet	     *binding_set,
 
 static gboolean
 binding_match_activate (GSList          *pspec_list,
-			GtkObject	*object,
+			GObject	        *object,
 			guint	         path_length,
 			gchar           *path,
 			gchar           *path_reversed,
@@ -1170,7 +1171,7 @@ gtk_binding_entries_sort_patterns (GSList      *entries,
 }
 
 static gboolean
-gtk_bindings_activate_list (GtkObject *object,
+gtk_bindings_activate_list (GObject   *object,
 			    GSList    *entries,
 			    gboolean   is_release)
 {
@@ -1264,7 +1265,7 @@ gtk_bindings_activate_list (GtkObject *object,
  * Return value: %TRUE if a binding was found and activated
  */
 gboolean
-gtk_bindings_activate (GtkObject       *object,
+gtk_bindings_activate (GObject         *object,
 		       guint	        keyval,
 		       GdkModifierType  modifiers)
 {
@@ -1274,8 +1275,6 @@ gtk_bindings_activate (GtkObject       *object,
   gboolean handled = FALSE;
   gboolean is_release;
 
-  g_return_val_if_fail (GTK_IS_OBJECT (object), FALSE);
-
   if (!GTK_IS_WIDGET (object))
     return FALSE;
 
@@ -1296,7 +1295,7 @@ gtk_bindings_activate (GtkObject       *object,
 
 /**
  * gtk_bindings_activate_event:
- * @object: a #GtkObject (generally must be a widget)
+ * @object: a #GObject (generally must be a widget)
  * @event: a #GdkEventKey
  * 
  * Looks up key bindings for @object to find one matching
@@ -1307,7 +1306,7 @@ gtk_bindings_activate (GtkObject       *object,
  * Since: 2.4
  */
 gboolean
-gtk_bindings_activate_event (GtkObject   *object,
+gtk_bindings_activate_event (GObject     *object,
                              GdkEventKey *event)
 {
   GSList *entries = NULL;
@@ -1315,8 +1314,6 @@ gtk_bindings_activate_event (GtkObject   *object,
   GtkKeyHash *key_hash;
   gboolean handled = FALSE;
 
-  g_return_val_if_fail (GTK_IS_OBJECT (object), FALSE);
-
   if (!GTK_IS_WIDGET (object))
     return FALSE;
 

gtk/gtkbindings.h

 /* GTK - The GIMP Toolkit
  * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
  *
- * GtkBindingSet: Keybinding manager for GtkObjects.
+ * GtkBindingSet: Keybinding manager for GObjects.
  * Copyright (C) 1998 Tim Janik
  *
  * This library is free software; you can redistribute it and/or
@@ -36,8 +36,7 @@
 
 
 #include <gdk/gdk.h>
-#include <gtk/gtkobject.h>
-
+#include <gtk/gtkenums.h>
 
 G_BEGIN_DECLS
 
@@ -101,15 +100,15 @@ struct _GtkBindingSignal
 GtkBindingSet*	gtk_binding_set_new	(const gchar	*set_name);
 GtkBindingSet*	gtk_binding_set_by_class(gpointer	 object_class);
 GtkBindingSet*	gtk_binding_set_find	(const gchar	*set_name);
-gboolean gtk_bindings_activate		(GtkObject	*object,
+gboolean gtk_bindings_activate		(GObject	*object,
 					 guint		 keyval,
 					 GdkModifierType modifiers);
-gboolean gtk_bindings_activate_event    (GtkObject      *object,
+gboolean gtk_bindings_activate_event    (GObject        *object,
 					 GdkEventKey    *event);
 gboolean gtk_binding_set_activate	(GtkBindingSet	*binding_set,
 					 guint		 keyval,
 					 GdkModifierType modifiers,
-					 GtkObject	*object);
+					 GObject	*object);
 
 void	 gtk_binding_entry_skip         (GtkBindingSet  *binding_set,
                                          guint           keyval,

gtk/gtkbox.c

@@ -78,6 +78,7 @@
 #include "gtkbox.h"
 #include "gtkorientable.h"
 #include "gtksizerequest.h"
+#include "gtktypeutils.h"
 #include "gtkprivate.h"
 #include "gtkintl.h"
 

gtk/gtkbuilder.c

@@ -246,6 +246,7 @@
 #include "gtkbuilder.h"
 #include "gtkbuildable.h"
 #include "gtkbuilderprivate.h"
+#include "gtkdebug.h"
 #include "gtkmain.h"
 #include "gtkintl.h"
 #include "gtkprivate.h"

gtk/gtkcellrendererspinner.c

@@ -32,6 +32,7 @@
 #include "gtkcellrendererspinner.h"
 #include "gtkiconfactory.h"
 #include "gtkicontheme.h"
+#include "gtktypeutils.h"
 #include "gtkintl.h"
 
 

gtk/gtkcombobox.c

@@ -1283,7 +1283,7 @@ gtk_combo_box_remove (GtkContainer *container,
   gtk_widget_unparent (widget);
   _gtk_bin_set_child (GTK_BIN (container), NULL);
 
-  if (GTK_OBJECT_FLAGS (combo_box) & GTK_IN_DESTRUCTION)
+  if (gtk_widget_in_destruction (combo_box))
     return;
 
   gtk_widget_queue_resize (GTK_WIDGET (container));
@@ -3964,12 +3964,12 @@ gtk_combo_box_menu_key_press (GtkWidget   *widget,
 {
   GtkComboBox *combo_box = GTK_COMBO_BOX (data);
 
-  if (!gtk_bindings_activate_event (GTK_OBJECT (widget), event))
+  if (!gtk_bindings_activate_event (G_OBJECT (widget), event))
     {
       /* The menu hasn't managed the
        * event, forward it to the combobox
        */
-      gtk_bindings_activate_event (GTK_OBJECT (combo_box), event);
+      gtk_bindings_activate_event (G_OBJECT (combo_box), event);
     }
 
   return TRUE;
@@ -4003,12 +4003,12 @@ gtk_combo_box_list_key_press (GtkWidget   *widget,
     return TRUE;
   }
 
-  if (!gtk_bindings_activate_event (GTK_OBJECT (widget), event))
+  if (!gtk_bindings_activate_event (G_OBJECT (widget), event))
     {
       /* The list hasn't managed the
        * event, forward it to the combobox
        */
-      gtk_bindings_activate_event (GTK_OBJECT (combo_box), event);
+      gtk_bindings_activate_event (G_OBJECT (combo_box), event);
     }
 
   return TRUE;

gtk/gtkcontainer.c

@@ -1086,7 +1086,7 @@ gtk_container_destroy (GtkWidget *widget)
   GtkContainer *container = GTK_CONTAINER (widget);
   GtkContainerPrivate *priv = container->priv;
 
-  if (GTK_CONTAINER_RESIZE_PENDING (container))
+  if (_gtk_widget_get_resize_pending (GTK_WIDGET (container)))
     _gtk_container_dequeue_resize_handler (container);
 
   if (priv->focus_child)
@@ -1278,10 +1278,10 @@ void
 _gtk_container_dequeue_resize_handler (GtkContainer *container)
 {
   g_return_if_fail (GTK_IS_CONTAINER (container));
-  g_return_if_fail (GTK_CONTAINER_RESIZE_PENDING (container));
+  g_return_if_fail (_gtk_widget_get_resize_pending (GTK_WIDGET (container)));
 
   container_resize_queue = g_slist_remove (container_resize_queue, container);
-  GTK_PRIVATE_UNSET_FLAG (container, GTK_RESIZE_PENDING);
+  _gtk_widget_set_resize_pending (GTK_WIDGET (container), FALSE);
 }
 
 /**
@@ -1392,7 +1392,7 @@ gtk_container_idle_sizer (gpointer data)
       widget = slist->data;
       g_slist_free_1 (slist);
 
-      GTK_PRIVATE_UNSET_FLAG (widget, GTK_RESIZE_PENDING);
+      _gtk_widget_set_resize_pending (widget, FALSE);
       gtk_container_check_resize (GTK_CONTAINER (widget));
     }
 
@@ -1418,9 +1418,9 @@ _gtk_container_queue_resize (GtkContainer *container)
   
   while (TRUE)
     {
-      GTK_PRIVATE_SET_FLAG (widget, GTK_ALLOC_NEEDED);
-      GTK_PRIVATE_SET_FLAG (widget, GTK_WIDTH_REQUEST_NEEDED);
-      GTK_PRIVATE_SET_FLAG (widget, GTK_HEIGHT_REQUEST_NEEDED);
+      _gtk_widget_set_alloc_needed (widget, TRUE);
+      _gtk_widget_set_width_request_needed (widget, TRUE);
+      _gtk_widget_set_height_request_needed (widget, TRUE);
 
       if ((resize_container && widget == GTK_WIDGET (resize_container)) ||
 	  !(parent = gtk_widget_get_parent (widget)))
@@ -1438,9 +1438,9 @@ _gtk_container_queue_resize (GtkContainer *container)
 	  switch (resize_container->priv->resize_mode)
 	    {
 	    case GTK_RESIZE_QUEUE:
-	      if (!GTK_CONTAINER_RESIZE_PENDING (resize_container))
+	      if (!_gtk_widget_get_resize_pending (GTK_WIDGET (resize_container)))
 		{
-		  GTK_PRIVATE_SET_FLAG (resize_container, GTK_RESIZE_PENDING);
+		  _gtk_widget_set_resize_pending (GTK_WIDGET (resize_container), TRUE);
 		  if (container_resize_queue == NULL)
 		    gdk_threads_add_idle_full (GTK_PRIORITY_RESIZE,
 				     gtk_container_idle_sizer,

gtk/gtkexpander.c

@@ -608,7 +608,7 @@ gtk_expander_size_allocate (GtkWidget     *widget,
   child_ypad     = 2 * border_width + priv->spacing + (interior_focus ? 0 : 2 * focus_width + 2 * focus_pad);
   top_min_height = 2 * expander_spacing + expander_size;
 
-  child_visible = (child && GTK_WIDGET_CHILD_VISIBLE (child));
+  child_visible = (child && gtk_widget_get_child_visible (child));
 
   if (priv->label_widget && gtk_widget_get_visible (priv->label_widget))
     {
@@ -1103,7 +1103,7 @@ focus_in_site (GtkExpander      *expander,
       {
 	GtkWidget *child = gtk_bin_get_child (GTK_BIN (expander));
 
-	if (child && GTK_WIDGET_CHILD_VISIBLE (child))
+	if (child && gtk_widget_get_child_visible (child))
 	  return gtk_widget_child_focus (child, direction);
 	else
 	  return FALSE;
@@ -1312,7 +1312,7 @@ gtk_expander_get_preferred_width (GtkWidget *widget,
       *natural_size += label_nat;
     }
 
-  if (child && GTK_WIDGET_CHILD_VISIBLE (child))
+  if (child && gtk_widget_get_child_visible (child))
     {
       gint child_min, child_nat;
 
@@ -1382,7 +1382,7 @@ gtk_expander_get_preferred_height (GtkWidget *widget,
       *natural_size += extra;
     }
 
-  if (child && GTK_WIDGET_CHILD_VISIBLE (child))
+  if (child && gtk_widget_get_child_visible (child))
     {
       gint child_min, child_nat;
 
@@ -1457,7 +1457,7 @@ gtk_expander_get_preferred_height_for_width (GtkWidget *widget,
       *natural_height += extra;
     }
 
-  if (child && GTK_WIDGET_CHILD_VISIBLE (child))
+  if (child && gtk_widget_get_child_visible (child))
     {
       gint child_min, child_nat;
 

gtk/gtkhsv.c

@@ -39,6 +39,7 @@
 #include "gtkhsv.h"
 #include "gtkbindings.h"
 #include "gtkmarshalers.h"
+#include "gtktypeutils.h"
 #include "gtkintl.h"
 
 /* Default width/height */

gtk/gtkicontheme.c

@@ -39,6 +39,7 @@
 #endif /* G_OS_WIN32 */
 
 #include "gtkicontheme.h"
+#include "gtkdebug.h"
 #include "gtkiconfactory.h"
 #include "gtkiconcache.h"
 #include "gtkbuiltincache.h"

gtk/gtkimcontext.h

@@ -26,7 +26,6 @@
 
 
 #include <gdk/gdk.h>
-#include <gtk/gtkobject.h>
 
 
 G_BEGIN_DECLS

gtk/gtkimcontextsimple.c

@@ -27,6 +27,7 @@
 #include "gtkimcontextsimple.h"
 #include "gtksettings.h"
 #include "gtkwidget.h"
+#include "gtkdebug.h"
 #include "gtkintl.h"
 
 

gtk/gtkinvisible.c

@@ -263,7 +263,7 @@ gtk_invisible_style_set (GtkWidget *widget,
 static void
 gtk_invisible_show (GtkWidget *widget)
 {
-  GTK_WIDGET_SET_FLAGS (widget, GTK_VISIBLE);
+  _gtk_widget_set_visible_flag (widget, TRUE);
   gtk_widget_map (widget);
 }
 

gtk/gtkmain.c

@@ -1931,7 +1931,7 @@ gtk_grab_notify_foreach (GtkWidget *child,
 
   if (is_shadowed)
     {
-      GTK_PRIVATE_SET_FLAG (child, GTK_SHADOWED);
+      _gtk_widget_set_shadowed (child, TRUE);
       if (!was_shadowed && devices &&
 	  gtk_widget_is_sensitive (child))
         synth_crossing_for_grab_notify (child, info->new_grab_widget,
@@ -1940,7 +1940,7 @@ gtk_grab_notify_foreach (GtkWidget *child,
     }
   else
     {
-      GTK_PRIVATE_UNSET_FLAG (child, GTK_SHADOWED);
+      _gtk_widget_set_shadowed (child, FALSE);
       if (was_shadowed && devices &&
           gtk_widget_is_sensitive (child))
         synth_crossing_for_grab_notify (info->old_grab_widget, child,
@@ -2240,25 +2240,25 @@ gtk_quit_destroy (GtkQuitFunction *quitf)
 }
 
 static gint
-gtk_quit_destructor (GtkObject **object_p)
+gtk_quit_destructor (GtkWidget **object_p)
 {
   if (*object_p)
-    gtk_object_destroy (*object_p);
+    gtk_widget_destroy (*object_p);
   g_free (object_p);
 
   return FALSE;
 }
 
 void
-gtk_quit_add_destroy (guint              main_level,
-		      GtkObject         *object)
+gtk_quit_add_destroy (guint      main_level,
+		      GtkWidget *object)
 {
-  GtkObject **object_p;
+  GtkWidget **object_p;
 
   g_return_if_fail (main_level > 0);
-  g_return_if_fail (GTK_IS_OBJECT (object));
+  g_return_if_fail (GTK_IS_WIDGET (object));
 
-  object_p = g_new (GtkObject*, 1);
+  object_p = g_new (GtkWidget*, 1);
   *object_p = object;
   g_signal_connect (object,
 		    "destroy",

gtk/gtkmain.h

@@ -33,6 +33,7 @@
 
 
 #include <gdk/gdk.h>
+#include <gtk/gtktypeutils.h>
 #include <gtk/gtkwidget.h>
 #ifdef G_PLATFORM_WIN32
 #include <gtk/gtkbox.h>
@@ -144,7 +145,7 @@ void       gtk_device_grab_remove  (GtkWidget          *widget,
 void	   gtk_init_add		   (GtkFunction	       function,
 				    gpointer	       data);
 void	   gtk_quit_add_destroy	   (guint	       main_level,
-				    GtkObject	      *object);
+				    GtkWidget	      *object);
 guint	   gtk_quit_add		   (guint	       main_level,
 				    GtkFunction	       function,
 				    gpointer	       data);

gtk/gtkmenushell.c

@@ -908,7 +908,7 @@ gtk_menu_shell_key_press (GtkWidget   *widget,
   if (!(menu_shell->active_menu_item || priv->in_unselectable_item) && menu_shell->parent_menu_shell)
     return gtk_widget_event (menu_shell->parent_menu_shell, (GdkEvent *)event);
 
-  if (gtk_bindings_activate_event (GTK_OBJECT (widget), event))
+  if (gtk_bindings_activate_event (G_OBJECT (widget), event))
     return TRUE;
 
   g_object_get (gtk_widget_get_settings (widget),

gtk/gtknotebook.c

@@ -1702,7 +1702,7 @@ gtk_notebook_map (GtkWidget *widget)
     {
       if (priv->action_widget[i] &&
           gtk_widget_get_visible (priv->action_widget[i]) &&
-          GTK_WIDGET_CHILD_VISIBLE (priv->action_widget[i]) &&
+          gtk_widget_get_child_visible (priv->action_widget[i]) &&
           !gtk_widget_get_mapped (priv->action_widget[i]))
         gtk_widget_map (priv->action_widget[i]);
     }
@@ -4527,10 +4527,9 @@ gtk_notebook_real_remove (GtkNotebook *notebook,
   GList * next_list;
   gint need_resize = FALSE;
   GtkWidget *tab_label;
-
   gboolean destroying;
 
-  destroying = GTK_OBJECT_FLAGS (notebook) & GTK_IN_DESTRUCTION;
+  destroying = gtk_widget_in_destruction (notebook);
 
   next_list = gtk_notebook_search_page (notebook, list, STEP_NEXT, TRUE);
   if (!next_list)

gtk/gtkobject.c

-/* 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/. 
- */
-
-#include "config.h"
-
-#include <stdarg.h>
-#include <string.h>
-#include <stdio.h>
-
-#include "gtkobject.h"
-#include "gtkintl.h"
-#include "gtkmarshalers.h"
-#include "gtkprivate.h"
-
-/**
- * SECTION:gtkobject
- * @Short_description: The base class of the GTK+ type hierarchy
- * @Title: GtkObject
- * @See_also:#GObject
- *
- * #GtkObject is the base class for all widgets, and for a few
- * non-widget objects such as #GtkAdjustment. #GtkObject predates
- * #GObject; non-widgets that derive from #GtkObject rather than
- * #GObject do so for backward compatibility reasons.
- *
- * #GtkObject<!-- -->s are created with a "floating" reference count.
- * This means that the initial reference is not owned by anyone. Calling
- * g_object_unref() on a newly-created #GtkObject is incorrect, the floating
- * reference has to be removed first. This can be done by anyone at any time,
- * by calling g_object_ref_sink() to convert the floating reference into a
- * regular reference. g_object_ref_sink() returns a new reference if an object
- * is already sunk (has no floating reference).
- *