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bbc5a3adac
Sat Feb 17 04:55:35 2001 Tim Janik <timj@gtk.org>
* gtype.[hc]: changed collect_format, collect_value() and lcopy_format,
lcopy_value() in the GTypeValueTable. the collect functions are now
called only once per value, collect_format/lcopy_format are strings
that enlist all necessary GTypeCValues to be varargs-collected.
* gvalue.h: ranamed STATIC_TAG to G_VALUE_NOCOPY_CONTENTS to indicate that
a value shouldn't copy its contents.
* gvaluecollector.h: changed G_VALUE_COLLECT() and G_VALUE_LCOPY()
macros to carry an additional argument (flags) that can be used
to pass G_VALUE_NOCOPY_CONTENTS along to the collection functions.
* *.c: adapted collect_value() and lcopy_value() functions to the new
prototypes, support G_VALUE_NOCOPY_CONTENTS where apropriate.
* gsignal.[hc]: introduced a G_SIGNAL_TYPE_STATIC_SCOPE flag that can
be passed along (ORed) with the parameter types, indicating that the
emission arguments are to be considered static for the scope of the
emission. should be used with care and only if the caller knows that
a parameter cannot be destroyed/freed from signal handlers connected
to an emission.
92 lines
2.8 KiB
C
92 lines
2.8 KiB
C
/* GObject - GLib Type, Object, Parameter and Signal Library
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* Copyright (C) 1997, 1998, 1999, 2000 Tim Janik and Red Hat, Inc.
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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
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* Public 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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* gvalue.h: generic GValue functions
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*/
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#ifndef __G_VALUE_H__
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#define __G_VALUE_H__
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#include <gobject/gtype.h>
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#ifdef __cplusplus
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extern "C" {
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#endif /* __cplusplus */
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/* --- type macros --- */
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#define G_TYPE_IS_VALUE(type) (g_type_value_table_peek (type) != NULL)
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#define G_IS_VALUE(value) (G_TYPE_CHECK_VALUE (value))
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#define G_VALUE_HOLDS(value, g_type) (G_TYPE_CHECK_VALUE_TYPE ((value), (g_type)))
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#define G_VALUE_TYPE(value) (((GValue*) (value))->g_type)
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#define G_VALUE_TYPE_NAME(value) (g_type_name (G_VALUE_TYPE (value)))
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/* --- typedefs & structures --- */
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typedef void (*GValueExchange) (GValue *value1,
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GValue *value2);
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struct _GValue
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{
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/*< private >*/
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GType g_type;
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/* public for GTypeValueTable methods */
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union {
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gint v_int;
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guint v_uint;
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glong v_long;
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gulong v_ulong;
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gfloat v_float;
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gdouble v_double;
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gpointer v_pointer;
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} data[4];
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};
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/* --- prototypes --- */
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void g_value_init (GValue *value,
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GType g_type);
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void g_value_copy (const GValue *src_value,
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GValue *dest_value);
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gboolean g_value_convert (const GValue *src_value,
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GValue *dest_value);
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void g_value_reset (GValue *value);
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void g_value_unset (GValue *value);
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gboolean g_value_fits_pointer (const GValue *value);
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gpointer g_value_get_as_pointer (const GValue *value);
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void g_value_set_instance (GValue *value,
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gpointer instance);
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/* --- implementation details --- */
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gboolean g_values_exchange (GValue *value1,
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GValue *value2);
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gboolean g_value_types_exchangable (GType value_type1,
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GType value_type2);
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void g_value_register_exchange_func (GType value_type1,
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GType value_type2,
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GValueExchange func);
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#define G_VALUE_NOCOPY_CONTENTS (1 << 27)
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#ifdef __cplusplus
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}
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#endif /* __cplusplus */
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#endif /* __G_VALUE_H__ */
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