gobject.h

windows平台下开发gtk程序所需要的库和头文件等

/* GObject - GLib Type, Object, Parameter and Signal Library
 * Copyright (C) 1998-1999, 2000-2001 Tim Janik and Red Hat, Inc.
 *
 * 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.
 */
#if !defined (__GLIB_GOBJECT_H_INSIDE__) && !defined (GOBJECT_COMPILATION)
#error "Only <glib-object.h> can be included directly."
#endif

#ifndef __G_OBJECT_H__
#define __G_OBJECT_H__

#include        <gobject/gtype.h>
#include        <gobject/gvalue.h>
#include        <gobject/gparam.h>
#include        <gobject/gclosure.h>
#include        <gobject/gsignal.h>

G_BEGIN_DECLS

/* --- type macros --- */
/**
 * G_TYPE_IS_OBJECT:
 * @type: Type id to check
 * 
 * Check if the passed in type id is a %G_TYPE_OBJECT or derived from it.
 * 
 * Returns: %FALSE or %TRUE, indicating whether @type is a %G_TYPE_OBJECT.
 */
#define G_TYPE_IS_OBJECT(type)      (G_TYPE_FUNDAMENTAL (type) == G_TYPE_OBJECT)
/**
 * G_OBJECT:
 * @object: Object which is subject to casting.
 * 
 * Casts a #GObject or derived pointer into a (GObject*) pointer.
 * Depending on the current debugging level, this function may invoke
 * certain runtime checks to identify invalid casts.
 */
#define G_OBJECT(object)            (G_TYPE_CHECK_INSTANCE_CAST ((object), G_TYPE_OBJECT, GObject))
/**
 * G_OBJECT_CLASS:
 * @class: a valid #GObjectClass
 * 
 * Casts a derived #GObjectClass structure into a #GObjectClass structure.
 */
#define G_OBJECT_CLASS(class)       (G_TYPE_CHECK_CLASS_CAST ((class), G_TYPE_OBJECT, GObjectClass))
/**
 * G_IS_OBJECT:
 * @object: Instance to check for being a %G_TYPE_OBJECT.
 * 
 * Checks whether a valid #GTypeInstance pointer is of type %G_TYPE_OBJECT.
 */
#define G_IS_OBJECT(object)         (G_TYPE_CHECK_INSTANCE_TYPE ((object), G_TYPE_OBJECT))
/**
 * G_IS_OBJECT_CLASS:
 * @class: a #GObjectClass
 * 
 * Checks whether @class "is a" valid #GObjectClass structure of type
 * %G_TYPE_OBJECT or derived.
 */
#define G_IS_OBJECT_CLASS(class)    (G_TYPE_CHECK_CLASS_TYPE ((class), G_TYPE_OBJECT))
/**
 * G_OBJECT_GET_CLASS:
 * @object: a #GObject instance.
 * 
 * Get the class structure associated to a #GObject instance.
 *
 * Returns: pointer to object class structure.
 */
#define G_OBJECT_GET_CLASS(object)  (G_TYPE_INSTANCE_GET_CLASS ((object), G_TYPE_OBJECT, GObjectClass))
/**
 * G_OBJECT_TYPE:
 * @object: Object to return the type id for.
 * 
 * Get the type id of an object.
 * 
 * Returns: Type id of @object.
 */
#define G_OBJECT_TYPE(object)       (G_TYPE_FROM_INSTANCE (object))
/**
 * G_OBJECT_TYPE_NAME:
 * @object: Object to return the type name for.
 * 
 * Get the name of an object's type.
 * 
 * Returns: Type name of @object. The string is owned by the type system and 
 *  should not be freed.
 */
#define G_OBJECT_TYPE_NAME(object)  (g_type_name (G_OBJECT_TYPE (object)))
/**
 * G_OBJECT_CLASS_TYPE:
 * @class: a valid #GObjectClass
 * 
 * Get the type id of a class structure.
 * 
 * Returns: Type id of @class.
 */
#define G_OBJECT_CLASS_TYPE(class)  (G_TYPE_FROM_CLASS (class))
/**
 * G_OBJECT_CLASS_NAME:
 * @class: a valid #GObjectClass
 * 
 * Return the name of a class structure's type.
 * 
 * Returns: Type name of @class. The string is owned by the type system and 
 *  should not be freed.
 */
#define G_OBJECT_CLASS_NAME(class)  (g_type_name (G_OBJECT_CLASS_TYPE (class)))
/**
 * G_VALUE_HOLDS_OBJECT:
 * @value: a valid #GValue structure
 * 
 * Checks whether the given #GValue can hold values derived from type %G_TYPE_OBJECT.
 * 
 * Returns: %TRUE on success.
 */
#define G_VALUE_HOLDS_OBJECT(value) (G_TYPE_CHECK_VALUE_TYPE ((value), G_TYPE_OBJECT))

/* --- type macros --- */
/**
 * G_TYPE_INITIALLY_UNOWNED:
 * 
 * The type for #GInitiallyUnowned.
 */
#define G_TYPE_INITIALLY_UNOWNED	      (g_initially_unowned_get_type())
/**
 * G_INITIALLY_UNOWNED:
 * @object: Object which is subject to casting.
 * 
 * Casts a #GInitiallyUnowned or derived pointer into a (GInitiallyUnowned*) 
 * pointer. Depending on the current debugging level, this function may invoke
 * certain runtime checks to identify invalid casts.
 */
#define G_INITIALLY_UNOWNED(object)           (G_TYPE_CHECK_INSTANCE_CAST ((object), G_TYPE_INITIALLY_UNOWNED, GInitiallyUnowned))
/**
 * G_INITIALLY_UNOWNED_CLASS:
 * @class: a valid #GInitiallyUnownedClass
 * 
 * Casts a derived #GInitiallyUnownedClass structure into a
 * #GInitiallyUnownedClass structure.
 */
#define G_INITIALLY_UNOWNED_CLASS(class)      (G_TYPE_CHECK_CLASS_CAST ((class), G_TYPE_INITIALLY_UNOWNED, GInitiallyUnownedClass))
/**
 * G_IS_INITIALLY_UNOWNED:
 * @object: Instance to check for being a %G_TYPE_INITIALLY_UNOWNED.
 * 
 * Checks whether a valid #GTypeInstance pointer is of type %G_TYPE_INITIALLY_UNOWNED.
 */
#define G_IS_INITIALLY_UNOWNED(object)        (G_TYPE_CHECK_INSTANCE_TYPE ((object), G_TYPE_INITIALLY_UNOWNED))
/**
 * G_IS_INITIALLY_UNOWNED_CLASS:
 * @class: a #GInitiallyUnownedClass
 * 
 * Checks whether @class "is a" valid #GInitiallyUnownedClass structure of type
 * %G_TYPE_INITIALLY_UNOWNED or derived.
 */
#define G_IS_INITIALLY_UNOWNED_CLASS(class)   (G_TYPE_CHECK_CLASS_TYPE ((class), G_TYPE_INITIALLY_UNOWNED))
/**
 * G_INITIALLY_UNOWNED_GET_CLASS:
 * @object: a #GInitiallyUnowned instance.
 * 
 * Get the class structure associated to a #GInitiallyUnowned instance.
 *
 * Returns: pointer to object class structure.
 */
#define G_INITIALLY_UNOWNED_GET_CLASS(object) (G_TYPE_INSTANCE_GET_CLASS ((object), G_TYPE_INITIALLY_UNOWNED, GInitiallyUnownedClass))
/* GInitiallyUnowned ia a GObject with initially floating reference count */


/* --- typedefs & structures --- */
typedef struct _GObject                  GObject;
typedef struct _GObjectClass             GObjectClass;
typedef struct _GObject                  GInitiallyUnowned;
typedef struct _GObjectClass             GInitiallyUnownedClass;
typedef struct _GObjectConstructParam    GObjectConstructParam;
/**
 * GObjectGetPropertyFunc:
 * @object: a #GObject
 * @property_id: the numeric id under which the property was registered with
 *  g_object_class_install_property().
 * @value: a #GValue to return the property value in
 * @pspec: the #GParamSpec describing the property
 * 
 * The type of the @get_property function of #GObjectClass. 
 */
typedef void (*GObjectGetPropertyFunc)  (GObject      *object,
                                         guint         property_id,
                                         GValue       *value,
                                         GParamSpec   *pspec);
/**
 * GObjectSetPropertyFunc:
 * @object: a #GObject
 * @property_id: the numeric id under which the property was registered with
 *  g_object_class_install_property().
 * @value: the new value for the property
 * @pspec: the #GParamSpec describing the property
 * 
 * The type of the @set_property function of #GObjectClass. 
 */
typedef void (*GObjectSetPropertyFunc)  (GObject      *object,
                                         guint         property_id,
                                         const GValue *value,
                                         GParamSpec   *pspec);
/**
 * GObjectFinalizeFunc:
 * @object: the #GObject being finalized
 * 
 * The type of the @finalize function of #GObjectClass.
 */
typedef void (*GObjectFinalizeFunc)     (GObject      *object);
/**
 * GWeakNotify:
 * @data: data that was provided when the weak reference was established
 * @where_the_object_was: the object being finalized
 * 
 * A #GWeakNotify function can be added to an object as a callback that gets
 * triggered when the object is finalized. Since the object is already being
 * finalized when the #GWeakNotify is called, there's not much you could do 
 * with the object, apart from e.g. using its adress as hash-index or the like. 
 */
typedef void (*GWeakNotify)		(gpointer      data,
					 GObject      *where_the_object_was);
/**
 * GObject:
 * 
 * All the fields in the <structname>GObject</structname> structure are private 
 * to the #GObject implementation and should never be accessed directly.
 */
struct  _GObject
{
  GTypeInstance  g_type_instance;
  
  /*< private >*/
  volatile guint ref_count;
  GData         *qdata;
};
/**
 * GObjectClass:
 * @g_type_class: the parent class
 * @constructor: the @constructor function is called by g_object_new () to 
 *  complete the object initialization after all the construction properties are
 *  set. The first thing a @constructor implementation must do is chain up to the
 *  @constructor of the parent class. Overriding @constructor should be rarely 
 *  needed, e.g. to handle construct properties, or to implement singletons.
 * @set_property: the generic setter for all properties of this type. Should be
 *  overridden for every type with properties. Implementations of @set_property
 *  don't need to emit property change notification explicitly, this is handled
 *  by the type system.
 * @get_property: the generic getter for all properties of this type. Should be
 *  overridden for every type with properties.
 * @dispose: the @dispose function is supposed to drop all references to other 
 *  objects, but keep the instance otherwise intact, so that client method 
 *  invocations still work. It may be run multiple times (due to reference 
 *  loops). Before returning, @dispose should chain up to the @dispose method 
 *  of the parent class.
 * @finalize: instance finalization function, should finish the finalization of 
 *  the instance begun in @dispose and chain up to the @finalize method of the 
 *  parent class.
 * @dispatch_properties_changed: emits property change notification for a bunch
 *  of properties. Overriding @dispatch_properties_changed should be rarely 
 *  needed.
 * @notify: the class closure for the notify signal
 * @constructed: the @constructed function is called by g_object_new() as the
 *  final step of the object creation process.  At the point of the call, all
 *  construction properties have been set on the object.  The purpose of this
 *  call is to allow for object initialisation steps that can only be performed
 *  after construction properties have been set.  @constructed implementors
 *  should chain up to the @constructed call of their parent class to allow it