1 /* GObject - GLib Type, Object, Parameter and Signal Library
2 * Copyright (C) 1997-1999, 2000-2001 Tim Janik and Red Hat, Inc.
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
14 * You should have received a copy of the GNU Lesser General
15 * Public License along with this library; if not, write to the
16 * Free Software Foundation, Inc., 59 Temple Place, Suite 330,
17 * Boston, MA 02111-1307, USA.
19 * gvalue.h: generic GValue functions
21 #if !defined (__GLIB_GOBJECT_H_INSIDE__) && !defined (GOBJECT_COMPILATION)
22 #error "Only <glib-object.h> can be included directly."
28 #include <gobject/gtype.h>
32 /* --- type macros --- */
33 #define G_TYPE_IS_VALUE(type) (g_type_check_is_value_type (type))
34 #define G_IS_VALUE(value) (G_TYPE_CHECK_VALUE (value))
35 #define G_VALUE_TYPE(value) (((GValue*) (value))->g_type)
36 #define G_VALUE_TYPE_NAME(value) (g_type_name (G_VALUE_TYPE (value)))
37 #define G_VALUE_HOLDS(value,type) (G_TYPE_CHECK_VALUE_TYPE ((value), (type)))
40 /* --- typedefs & structures --- */
41 typedef void (*GValueTransform
) (const GValue
*src_value
,
48 /* public for GTypeValueTable methods */
63 /* --- prototypes --- */
64 GValue
* g_value_init (GValue
*value
,
66 void g_value_copy (const GValue
*src_value
,
68 GValue
* g_value_reset (GValue
*value
);
69 void g_value_unset (GValue
*value
);
70 void g_value_set_instance (GValue
*value
,
75 gboolean
g_value_fits_pointer (const GValue
*value
);
76 gpointer
g_value_peek_pointer (const GValue
*value
);
79 /* --- implementation details --- */
80 gboolean
g_value_type_compatible (GType src_type
,
82 gboolean
g_value_type_transformable (GType src_type
,
84 gboolean
g_value_transform (const GValue
*src_value
,
86 void g_value_register_transform_func (GType src_type
,
88 GValueTransform transform_func
);
89 #define G_VALUE_NOCOPY_CONTENTS (1 << 27)
94 #endif /* __G_VALUE_H__ */