/usr/include/glib-2.0/gobject/gsignal.h
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1  |  | /* GObject - GLib Type, Object, Parameter and Signal Library  | 
2  |  |  * Copyright (C) 2000-2001 Red Hat, Inc.  | 
3  |  |  *  | 
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 2.1 of the License, or (at your option) any later version.  | 
8  |  |  *  | 
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.  | 
13  |  |  *  | 
14  |  |  * You should have received a copy of the GNU Lesser General  | 
15  |  |  * Public License along with this library; if not, see <http://www.gnu.org/licenses/>.  | 
16  |  |  */  | 
17  |  | #ifndef __G_SIGNAL_H__  | 
18  |  | #define __G_SIGNAL_H__  | 
19  |  |  | 
20  |  | #if !defined (__GLIB_GOBJECT_H_INSIDE__) && !defined (GOBJECT_COMPILATION)  | 
21  |  | #error "Only <glib-object.h> can be included directly."  | 
22  |  | #endif  | 
23  |  |  | 
24  |  | #include  <gobject/gclosure.h>  | 
25  |  | #include  <gobject/gvalue.h>  | 
26  |  | #include  <gobject/gparam.h>  | 
27  |  | #include  <gobject/gmarshal.h>  | 
28  |  |  | 
29  |  | G_BEGIN_DECLS  | 
30  |  |  | 
31  |  | /* --- typedefs --- */  | 
32  |  | typedef struct _GSignalQuery     GSignalQuery;  | 
33  |  | typedef struct _GSignalInvocationHint  GSignalInvocationHint;  | 
34  |  | /**  | 
35  |  |  * GSignalCMarshaller:  | 
36  |  |  *   | 
37  |  |  * This is the signature of marshaller functions, required to marshall  | 
38  |  |  * arrays of parameter values to signal emissions into C language callback  | 
39  |  |  * invocations. It is merely an alias to #GClosureMarshal since the #GClosure  | 
40  |  |  * mechanism takes over responsibility of actual function invocation for the  | 
41  |  |  * signal system.  | 
42  |  |  */  | 
43  |  | typedef GClosureMarshal      GSignalCMarshaller;  | 
44  |  | /**  | 
45  |  |  * GSignalCVaMarshaller:  | 
46  |  |  *   | 
47  |  |  * This is the signature of va_list marshaller functions, an optional  | 
48  |  |  * marshaller that can be used in some situations to avoid  | 
49  |  |  * marshalling the signal argument into GValues.  | 
50  |  |  */  | 
51  |  | typedef GVaClosureMarshal    GSignalCVaMarshaller;  | 
52  |  | /**  | 
53  |  |  * GSignalEmissionHook:  | 
54  |  |  * @ihint: Signal invocation hint, see #GSignalInvocationHint.  | 
55  |  |  * @n_param_values: the number of parameters to the function, including  | 
56  |  |  *  the instance on which the signal was emitted.  | 
57  |  |  * @param_values: (array length=n_param_values): the instance on which  | 
58  |  |  *  the signal was emitted, followed by the parameters of the emission.  | 
59  |  |  * @data: user data associated with the hook.  | 
60  |  |  *   | 
61  |  |  * A simple function pointer to get invoked when the signal is emitted. This   | 
62  |  |  * allows you to tie a hook to the signal type, so that it will trap all   | 
63  |  |  * emissions of that signal, from any object.  | 
64  |  |  *   | 
65  |  |  * You may not attach these to signals created with the #G_SIGNAL_NO_HOOKS flag.  | 
66  |  |  *   | 
67  |  |  * Returns: whether it wants to stay connected. If it returns %FALSE, the signal   | 
68  |  |  *  hook is disconnected (and destroyed).  | 
69  |  |  */  | 
70  |  | typedef gboolean (*GSignalEmissionHook) (GSignalInvocationHint *ihint,  | 
71  |  |            guint      n_param_values,  | 
72  |  |            const GValue        *param_values,  | 
73  |  |            gpointer   data);  | 
74  |  | /**  | 
75  |  |  * GSignalAccumulator:  | 
76  |  |  * @ihint: Signal invocation hint, see #GSignalInvocationHint.  | 
77  |  |  * @return_accu: Accumulator to collect callback return values in, this  | 
78  |  |  *  is the return value of the current signal emission.  | 
79  |  |  * @handler_return: A #GValue holding the return value of the signal handler.  | 
80  |  |  * @data: Callback data that was specified when creating the signal.  | 
81  |  |  *   | 
82  |  |  * The signal accumulator is a special callback function that can be used  | 
83  |  |  * to collect return values of the various callbacks that are called  | 
84  |  |  * during a signal emission. The signal accumulator is specified at signal  | 
85  |  |  * creation time, if it is left %NULL, no accumulation of callback return  | 
86  |  |  * values is performed. The return value of signal emissions is then the  | 
87  |  |  * value returned by the last callback.  | 
88  |  |  *   | 
89  |  |  * Returns: The accumulator function returns whether the signal emission  | 
90  |  |  *  should be aborted. Returning %FALSE means to abort the  | 
91  |  |  *  current emission and %TRUE is returned for continuation.  | 
92  |  |  */  | 
93  |  | typedef gboolean (*GSignalAccumulator)  (GSignalInvocationHint *ihint,  | 
94  |  |            GValue          *return_accu,  | 
95  |  |            const GValue        *handler_return,  | 
96  |  |            gpointer               data);  | 
97  |  |  | 
98  |  |  | 
99  |  | /* --- run, match and connect types --- */  | 
100  |  | /**  | 
101  |  |  * GSignalFlags:  | 
102  |  |  * @G_SIGNAL_RUN_FIRST: Invoke the object method handler in the first emission stage.  | 
103  |  |  * @G_SIGNAL_RUN_LAST: Invoke the object method handler in the third emission stage.  | 
104  |  |  * @G_SIGNAL_RUN_CLEANUP: Invoke the object method handler in the last emission stage.  | 
105  |  |  * @G_SIGNAL_NO_RECURSE: Signals being emitted for an object while currently being in  | 
106  |  |  *  emission for this very object will not be emitted recursively,  | 
107  |  |  *  but instead cause the first emission to be restarted.  | 
108  |  |  * @G_SIGNAL_DETAILED: This signal supports "::detail" appendices to the signal name  | 
109  |  |  *  upon handler connections and emissions.  | 
110  |  |  * @G_SIGNAL_ACTION: Action signals are signals that may freely be emitted on alive  | 
111  |  |  *  objects from user code via g_signal_emit() and friends, without  | 
112  |  |  *  the need of being embedded into extra code that performs pre or  | 
113  |  |  *  post emission adjustments on the object. They can also be thought  | 
114  |  |  *  of as object methods which can be called generically by   | 
115  |  |  *  third-party code.  | 
116  |  |  * @G_SIGNAL_NO_HOOKS: No emissions hooks are supported for this signal.  | 
117  |  |  * @G_SIGNAL_MUST_COLLECT: Varargs signal emission will always collect the  | 
118  |  |  *   arguments, even if there are no signal handlers connected.  Since 2.30.  | 
119  |  |  * @G_SIGNAL_DEPRECATED: The signal is deprecated and will be removed  | 
120  |  |  *   in a future version. A warning will be generated if it is connected while  | 
121  |  |  *   running with G_ENABLE_DIAGNOSTIC=1.  Since 2.32.  | 
122  |  |  *   | 
123  |  |  * The signal flags are used to specify a signal's behaviour, the overall  | 
124  |  |  * signal description outlines how especially the RUN flags control the  | 
125  |  |  * stages of a signal emission.  | 
126  |  |  */  | 
127  |  | typedef enum  | 
128  |  | { | 
129  |  |   G_SIGNAL_RUN_FIRST  = 1 << 0,  | 
130  |  |   G_SIGNAL_RUN_LAST = 1 << 1,  | 
131  |  |   G_SIGNAL_RUN_CLEANUP  = 1 << 2,  | 
132  |  |   G_SIGNAL_NO_RECURSE = 1 << 3,  | 
133  |  |   G_SIGNAL_DETAILED = 1 << 4,  | 
134  |  |   G_SIGNAL_ACTION = 1 << 5,  | 
135  |  |   G_SIGNAL_NO_HOOKS = 1 << 6,  | 
136  |  |   G_SIGNAL_MUST_COLLECT = 1 << 7,  | 
137  |  |   G_SIGNAL_DEPRECATED   = 1 << 8  | 
138  |  | } GSignalFlags;  | 
139  |  | /**  | 
140  |  |  * G_SIGNAL_FLAGS_MASK:  | 
141  |  |  *   | 
142  |  |  * A mask for all #GSignalFlags bits.  | 
143  |  |  */  | 
144  |  | #define G_SIGNAL_FLAGS_MASK  0x1ff  | 
145  |  | /**  | 
146  |  |  * GConnectFlags:  | 
147  |  |  * @G_CONNECT_AFTER: whether the handler should be called before or after the   | 
148  |  |  *  default handler of the signal.  | 
149  |  |  * @G_CONNECT_SWAPPED: whether the instance and data should be swapped when  | 
150  |  |  *  calling the handler; see g_signal_connect_swapped() for an example.  | 
151  |  |  *   | 
152  |  |  * The connection flags are used to specify the behaviour of a signal's   | 
153  |  |  * connection.  | 
154  |  |  */  | 
155  |  | typedef enum  | 
156  |  | { | 
157  |  |   G_CONNECT_AFTER = 1 << 0,  | 
158  |  |   G_CONNECT_SWAPPED = 1 << 1  | 
159  |  | } GConnectFlags;  | 
160  |  | /**  | 
161  |  |  * GSignalMatchType:  | 
162  |  |  * @G_SIGNAL_MATCH_ID: The signal id must be equal.  | 
163  |  |  * @G_SIGNAL_MATCH_DETAIL: The signal detail must be equal.  | 
164  |  |  * @G_SIGNAL_MATCH_CLOSURE: The closure must be the same.  | 
165  |  |  * @G_SIGNAL_MATCH_FUNC: The C closure callback must be the same.  | 
166  |  |  * @G_SIGNAL_MATCH_DATA: The closure data must be the same.  | 
167  |  |  * @G_SIGNAL_MATCH_UNBLOCKED: Only unblocked signals may be matched.  | 
168  |  |  *   | 
169  |  |  * The match types specify what g_signal_handlers_block_matched(),  | 
170  |  |  * g_signal_handlers_unblock_matched() and g_signal_handlers_disconnect_matched()  | 
171  |  |  * match signals by.  | 
172  |  |  */  | 
173  |  | typedef enum  | 
174  |  | { | 
175  |  |   G_SIGNAL_MATCH_ID    = 1 << 0,  | 
176  |  |   G_SIGNAL_MATCH_DETAIL    = 1 << 1,  | 
177  |  |   G_SIGNAL_MATCH_CLOSURE   = 1 << 2,  | 
178  |  |   G_SIGNAL_MATCH_FUNC    = 1 << 3,  | 
179  |  |   G_SIGNAL_MATCH_DATA    = 1 << 4,  | 
180  |  |   G_SIGNAL_MATCH_UNBLOCKED = 1 << 5  | 
181  |  | } GSignalMatchType;  | 
182  |  | /**  | 
183  |  |  * G_SIGNAL_MATCH_MASK:  | 
184  |  |  *   | 
185  |  |  * A mask for all #GSignalMatchType bits.  | 
186  |  |  */  | 
187  |  | #define G_SIGNAL_MATCH_MASK  0x3f  | 
188  |  | /**  | 
189  |  |  * G_SIGNAL_TYPE_STATIC_SCOPE:  | 
190  |  |  *   | 
191  |  |  * This macro flags signal argument types for which the signal system may   | 
192  |  |  * assume that instances thereof remain persistent across all signal emissions  | 
193  |  |  * they are used in. This is only useful for non ref-counted, value-copy types.  | 
194  |  |  *   | 
195  |  |  * To flag a signal argument in this way, add `| G_SIGNAL_TYPE_STATIC_SCOPE`  | 
196  |  |  * to the corresponding argument of g_signal_new().  | 
197  |  |  * |[  | 
198  |  |  * g_signal_new ("size_request", | 
199  |  |  *   G_TYPE_FROM_CLASS (gobject_class),  | 
200  |  |  *   G_SIGNAL_RUN_FIRST,  | 
201  |  |  *   G_STRUCT_OFFSET (GtkWidgetClass, size_request),  | 
202  |  |  *   NULL, NULL,  | 
203  |  |  *   _gtk_marshal_VOID__BOXED,  | 
204  |  |  *   G_TYPE_NONE, 1,  | 
205  |  |  *   GTK_TYPE_REQUISITION | G_SIGNAL_TYPE_STATIC_SCOPE);  | 
206  |  |  * ]|  | 
207  |  |  */  | 
208  |  | #define G_SIGNAL_TYPE_STATIC_SCOPE (G_TYPE_FLAG_RESERVED_ID_BIT)  | 
209  |  |  | 
210  |  |  | 
211  |  | /* --- signal information --- */  | 
212  |  | /**  | 
213  |  |  * GSignalInvocationHint:  | 
214  |  |  * @signal_id: The signal id of the signal invoking the callback  | 
215  |  |  * @detail: The detail passed on for this emission  | 
216  |  |  * @run_type: The stage the signal emission is currently in, this  | 
217  |  |  *  field will contain one of %G_SIGNAL_RUN_FIRST,  | 
218  |  |  *  %G_SIGNAL_RUN_LAST or %G_SIGNAL_RUN_CLEANUP.  | 
219  |  |  *   | 
220  |  |  * The #GSignalInvocationHint structure is used to pass on additional information  | 
221  |  |  * to callbacks during a signal emission.  | 
222  |  |  */  | 
223  |  | struct _GSignalInvocationHint  | 
224  |  | { | 
225  |  |   guint   signal_id;  | 
226  |  |   GQuark  detail;  | 
227  |  |   GSignalFlags  run_type;  | 
228  |  | };  | 
229  |  | /**  | 
230  |  |  * GSignalQuery:  | 
231  |  |  * @signal_id: The signal id of the signal being queried, or 0 if the  | 
232  |  |  *  signal to be queried was unknown.  | 
233  |  |  * @signal_name: The signal name.  | 
234  |  |  * @itype: The interface/instance type that this signal can be emitted for.  | 
235  |  |  * @signal_flags: The signal flags as passed in to g_signal_new().  | 
236  |  |  * @return_type: The return type for user callbacks.  | 
237  |  |  * @n_params: The number of parameters that user callbacks take.  | 
238  |  |  * @param_types: (array length=n_params): The individual parameter types for  | 
239  |  |  *  user callbacks, note that the effective callback signature is:  | 
240  |  |  *  |[<!-- language="C" -->  | 
241  |  |  *  @return_type callback (#gpointer     data1,  | 
242  |  |  *  [param_types param_names,]  | 
243  |  |  *  gpointer     data2);  | 
244  |  |  *  ]|  | 
245  |  |  *   | 
246  |  |  * A structure holding in-depth information for a specific signal. It is  | 
247  |  |  * filled in by the g_signal_query() function.  | 
248  |  |  */  | 
249  |  | struct _GSignalQuery  | 
250  |  | { | 
251  |  |   guint   signal_id;  | 
252  |  |   const gchar  *signal_name;  | 
253  |  |   GType   itype;  | 
254  |  |   GSignalFlags  signal_flags;  | 
255  |  |   GType   return_type; /* mangled with G_SIGNAL_TYPE_STATIC_SCOPE flag */  | 
256  |  |   guint   n_params;  | 
257  |  |   const GType  *param_types; /* mangled with G_SIGNAL_TYPE_STATIC_SCOPE flag */  | 
258  |  | };  | 
259  |  |  | 
260  |  |  | 
261  |  | /* --- signals --- */  | 
262  |  | GLIB_AVAILABLE_IN_ALL  | 
263  |  | guint                 g_signal_newv         (const gchar        *signal_name,  | 
264  |  |                GType               itype,  | 
265  |  |                GSignalFlags        signal_flags,  | 
266  |  |                GClosure           *class_closure,  | 
267  |  |                GSignalAccumulator  accumulator,  | 
268  |  |                gpointer    accu_data,  | 
269  |  |                GSignalCMarshaller  c_marshaller,  | 
270  |  |                GType               return_type,  | 
271  |  |                guint               n_params,  | 
272  |  |                GType              *param_types);  | 
273  |  | GLIB_AVAILABLE_IN_ALL  | 
274  |  | guint                 g_signal_new_valist   (const gchar        *signal_name,  | 
275  |  |                GType               itype,  | 
276  |  |                GSignalFlags        signal_flags,  | 
277  |  |                GClosure           *class_closure,  | 
278  |  |                GSignalAccumulator  accumulator,  | 
279  |  |                gpointer    accu_data,  | 
280  |  |                GSignalCMarshaller  c_marshaller,  | 
281  |  |                GType               return_type,  | 
282  |  |                guint               n_params,  | 
283  |  |                va_list             args);  | 
284  |  | GLIB_AVAILABLE_IN_ALL  | 
285  |  | guint                 g_signal_new          (const gchar        *signal_name,  | 
286  |  |                GType               itype,  | 
287  |  |                GSignalFlags        signal_flags,  | 
288  |  |                guint               class_offset,  | 
289  |  |                GSignalAccumulator  accumulator,  | 
290  |  |                gpointer    accu_data,  | 
291  |  |                GSignalCMarshaller  c_marshaller,  | 
292  |  |                GType               return_type,  | 
293  |  |                guint               n_params,  | 
294  |  |                ...);  | 
295  |  | GLIB_AVAILABLE_IN_ALL  | 
296  |  | guint            g_signal_new_class_handler (const gchar        *signal_name,  | 
297  |  |                                              GType               itype,  | 
298  |  |                                              GSignalFlags        signal_flags,  | 
299  |  |                                              GCallback           class_handler,  | 
300  |  |                                              GSignalAccumulator  accumulator,  | 
301  |  |                                              gpointer            accu_data,  | 
302  |  |                                              GSignalCMarshaller  c_marshaller,  | 
303  |  |                                              GType               return_type,  | 
304  |  |                                              guint               n_params,  | 
305  |  |                                              ...);  | 
306  |  | GLIB_AVAILABLE_IN_ALL  | 
307  |  | void             g_signal_set_va_marshaller (guint              signal_id,  | 
308  |  |                GType              instance_type,  | 
309  |  |                GSignalCVaMarshaller va_marshaller);  | 
310  |  |  | 
311  |  | GLIB_AVAILABLE_IN_ALL  | 
312  |  | void                  g_signal_emitv        (const GValue       *instance_and_params,  | 
313  |  |                guint               signal_id,  | 
314  |  |                GQuark              detail,  | 
315  |  |                GValue             *return_value);  | 
316  |  | GLIB_AVAILABLE_IN_ALL  | 
317  |  | void                  g_signal_emit_valist  (gpointer            instance,  | 
318  |  |                guint               signal_id,  | 
319  |  |                GQuark              detail,  | 
320  |  |                va_list             var_args);  | 
321  |  | GLIB_AVAILABLE_IN_ALL  | 
322  |  | void                  g_signal_emit         (gpointer            instance,  | 
323  |  |                guint               signal_id,  | 
324  |  |                GQuark              detail,  | 
325  |  |                ...);  | 
326  |  | GLIB_AVAILABLE_IN_ALL  | 
327  |  | void                  g_signal_emit_by_name (gpointer            instance,  | 
328  |  |                const gchar        *detailed_signal,  | 
329  |  |                ...);  | 
330  |  | GLIB_AVAILABLE_IN_ALL  | 
331  |  | guint                 g_signal_lookup       (const gchar        *name,  | 
332  |  |                GType               itype);  | 
333  |  | GLIB_AVAILABLE_IN_ALL  | 
334  |  | const gchar *         g_signal_name         (guint               signal_id);  | 
335  |  | GLIB_AVAILABLE_IN_ALL  | 
336  |  | void                  g_signal_query        (guint               signal_id,  | 
337  |  |                GSignalQuery       *query);  | 
338  |  | GLIB_AVAILABLE_IN_ALL  | 
339  |  | guint*                g_signal_list_ids     (GType               itype,  | 
340  |  |                guint              *n_ids);  | 
341  |  | GLIB_AVAILABLE_IN_ALL  | 
342  |  | gboolean        g_signal_parse_name   (const gchar  *detailed_signal,  | 
343  |  |                GType     itype,  | 
344  |  |                guint    *signal_id_p,  | 
345  |  |                GQuark   *detail_p,  | 
346  |  |                gboolean    force_detail_quark);  | 
347  |  | GLIB_AVAILABLE_IN_ALL  | 
348  |  | GSignalInvocationHint* g_signal_get_invocation_hint (gpointer    instance);  | 
349  |  |  | 
350  |  |  | 
351  |  | /* --- signal emissions --- */  | 
352  |  | GLIB_AVAILABLE_IN_ALL  | 
353  |  | void  g_signal_stop_emission        (gpointer     instance,  | 
354  |  |                guint      signal_id,  | 
355  |  |                GQuark     detail);  | 
356  |  | GLIB_AVAILABLE_IN_ALL  | 
357  |  | void  g_signal_stop_emission_by_name      (gpointer     instance,  | 
358  |  |                const gchar   *detailed_signal);  | 
359  |  | GLIB_AVAILABLE_IN_ALL  | 
360  |  | gulong  g_signal_add_emission_hook      (guint      signal_id,  | 
361  |  |                GQuark     detail,  | 
362  |  |                GSignalEmissionHook  hook_func,  | 
363  |  |                gpointer           hook_data,  | 
364  |  |                GDestroyNotify   data_destroy);  | 
365  |  | GLIB_AVAILABLE_IN_ALL  | 
366  |  | void  g_signal_remove_emission_hook     (guint      signal_id,  | 
367  |  |                gulong     hook_id);  | 
368  |  |  | 
369  |  |  | 
370  |  | /* --- signal handlers --- */  | 
371  |  | GLIB_AVAILABLE_IN_ALL  | 
372  |  | gboolean g_signal_has_handler_pending       (gpointer     instance,  | 
373  |  |                  guint      signal_id,  | 
374  |  |                  GQuark     detail,  | 
375  |  |                  gboolean     may_be_blocked);  | 
376  |  | GLIB_AVAILABLE_IN_ALL  | 
377  |  | gulong   g_signal_connect_closure_by_id       (gpointer     instance,  | 
378  |  |                  guint      signal_id,  | 
379  |  |                  GQuark     detail,  | 
380  |  |                  GClosure    *closure,  | 
381  |  |                  gboolean     after);  | 
382  |  | GLIB_AVAILABLE_IN_ALL  | 
383  |  | gulong   g_signal_connect_closure       (gpointer     instance,  | 
384  |  |                  const gchar       *detailed_signal,  | 
385  |  |                  GClosure    *closure,  | 
386  |  |                  gboolean     after);  | 
387  |  | GLIB_AVAILABLE_IN_ALL  | 
388  |  | gulong   g_signal_connect_data          (gpointer     instance,  | 
389  |  |                  const gchar   *detailed_signal,  | 
390  |  |                  GCallback    c_handler,  | 
391  |  |                  gpointer     data,  | 
392  |  |                  GClosureNotify   destroy_data,  | 
393  |  |                  GConnectFlags    connect_flags);  | 
394  |  | GLIB_AVAILABLE_IN_ALL  | 
395  |  | void   g_signal_handler_block         (gpointer     instance,  | 
396  |  |                  gulong     handler_id);  | 
397  |  | GLIB_AVAILABLE_IN_ALL  | 
398  |  | void   g_signal_handler_unblock       (gpointer     instance,  | 
399  |  |                  gulong     handler_id);  | 
400  |  | GLIB_AVAILABLE_IN_ALL  | 
401  |  | void   g_signal_handler_disconnect        (gpointer     instance,  | 
402  |  |                  gulong     handler_id);  | 
403  |  | GLIB_AVAILABLE_IN_ALL  | 
404  |  | gboolean g_signal_handler_is_connected        (gpointer     instance,  | 
405  |  |                  gulong     handler_id);  | 
406  |  | GLIB_AVAILABLE_IN_ALL  | 
407  |  | gulong   g_signal_handler_find          (gpointer     instance,  | 
408  |  |                  GSignalMatchType   mask,  | 
409  |  |                  guint      signal_id,  | 
410  |  |                  GQuark     detail,  | 
411  |  |                  GClosure    *closure,  | 
412  |  |                  gpointer     func,  | 
413  |  |                  gpointer     data);  | 
414  |  | GLIB_AVAILABLE_IN_ALL  | 
415  |  | guint  g_signal_handlers_block_matched      (gpointer     instance,  | 
416  |  |                  GSignalMatchType   mask,  | 
417  |  |                  guint      signal_id,  | 
418  |  |                  GQuark     detail,  | 
419  |  |                  GClosure    *closure,  | 
420  |  |                  gpointer     func,  | 
421  |  |                  gpointer     data);  | 
422  |  | GLIB_AVAILABLE_IN_ALL  | 
423  |  | guint  g_signal_handlers_unblock_matched    (gpointer     instance,  | 
424  |  |                  GSignalMatchType   mask,  | 
425  |  |                  guint      signal_id,  | 
426  |  |                  GQuark     detail,  | 
427  |  |                  GClosure    *closure,  | 
428  |  |                  gpointer     func,  | 
429  |  |                  gpointer     data);  | 
430  |  | GLIB_AVAILABLE_IN_ALL  | 
431  |  | guint  g_signal_handlers_disconnect_matched (gpointer     instance,  | 
432  |  |                  GSignalMatchType   mask,  | 
433  |  |                  guint      signal_id,  | 
434  |  |                  GQuark     detail,  | 
435  |  |                  GClosure    *closure,  | 
436  |  |                  gpointer     func,  | 
437  |  |                  gpointer     data);  | 
438  |  |  | 
439  |  | GLIB_AVAILABLE_IN_2_62  | 
440  |  | void   g_clear_signal_handler         (gulong            *handler_id_ptr,  | 
441  |  |                  gpointer           instance);  | 
442  |  |  | 
443  |  | #define  g_clear_signal_handler(handler_id_ptr, instance)           \  | 
444  |  |   G_STMT_START {                                                    \ | 
445  |  |     G_STATIC_ASSERT (sizeof *(handler_id_ptr) == sizeof (gulong));  \  | 
446  |  |     gulong _handler_id = *(handler_id_ptr);                         \  | 
447  |  |                                                                     \  | 
448  |  |     if (_handler_id > 0)                                            \  | 
449  |  |       {                                                             \ | 
450  |  |         g_signal_handler_disconnect ((instance), _handler_id);      \  | 
451  |  |         *(handler_id_ptr) = 0;                                      \  | 
452  |  |       }                                                             \  | 
453  |  |   } G_STMT_END                                                      \  | 
454  |  |   GLIB_AVAILABLE_MACRO_IN_2_62  | 
455  |  |  | 
456  |  | /* --- overriding and chaining --- */  | 
457  |  | GLIB_AVAILABLE_IN_ALL  | 
458  |  | void    g_signal_override_class_closure       (guint              signal_id,  | 
459  |  |                                                GType              instance_type,  | 
460  |  |                                                GClosure          *class_closure);  | 
461  |  | GLIB_AVAILABLE_IN_ALL  | 
462  |  | void    g_signal_override_class_handler       (const gchar       *signal_name,  | 
463  |  |                                                GType              instance_type,  | 
464  |  |                                                GCallback          class_handler);  | 
465  |  | GLIB_AVAILABLE_IN_ALL  | 
466  |  | void    g_signal_chain_from_overridden        (const GValue      *instance_and_params,  | 
467  |  |                                                GValue            *return_value);  | 
468  |  | GLIB_AVAILABLE_IN_ALL  | 
469  |  | void   g_signal_chain_from_overridden_handler (gpointer           instance,  | 
470  |  |                                                ...);  | 
471  |  |  | 
472  |  |  | 
473  |  | /* --- convenience --- */  | 
474  |  | /**  | 
475  |  |  * g_signal_connect:  | 
476  |  |  * @instance: the instance to connect to.  | 
477  |  |  * @detailed_signal: a string of the form "signal-name::detail".  | 
478  |  |  * @c_handler: the #GCallback to connect.  | 
479  |  |  * @data: data to pass to @c_handler calls.  | 
480  |  |  *   | 
481  |  |  * Connects a #GCallback function to a signal for a particular object.  | 
482  |  |  *   | 
483  |  |  * The handler will be called before the default handler of the signal.  | 
484  |  |  *  | 
485  |  |  * See [memory management of signal handlers][signal-memory-management] for  | 
486  |  |  * details on how to handle the return value and memory management of @data.  | 
487  |  |  *   | 
488  |  |  * Returns: the handler ID, of type #gulong (always greater than 0 for successful connections)  | 
489  |  |  */  | 
490  |  | #define g_signal_connect(instance, detailed_signal, c_handler, data) \  | 
491  | 0  |     g_signal_connect_data ((instance), (detailed_signal), (c_handler), (data), NULL, (GConnectFlags) 0) Unexecuted instantiation: ConnectivityManagerImpl.cpp:chip::DeviceLayer::ConnectivityManagerImpl::_OnWpaInterfaceProxyReady(_GObject*, _GAsyncResult*)::$_0::operator()(_WpaFiW1Wpa_supplicant1Interface*, _GVariant*, chip::DeviceLayer::ConnectivityManagerImpl*) const Unexecuted instantiation: ConnectivityManagerImpl.cpp:chip::DeviceLayer::ConnectivityManagerImpl::_OnWpaInterfaceProxyReady(_GObject*, _GAsyncResult*)::$_1::operator()(_WpaFiW1Wpa_supplicant1Interface*, int, chip::DeviceLayer::ConnectivityManagerImpl*) const Unexecuted instantiation: ConnectivityManagerImpl.cpp:chip::DeviceLayer::ConnectivityManagerImpl::_OnWpaProxyReady(_GObject*, _GAsyncResult*)::$_0::operator()(_WpaFiW1Wpa_supplicant1*, char const*, _GVariant*, chip::DeviceLayer::ConnectivityManagerImpl*) const Unexecuted instantiation: ConnectivityManagerImpl.cpp:chip::DeviceLayer::ConnectivityManagerImpl::_OnWpaProxyReady(_GObject*, _GAsyncResult*)::$_1::operator()(_WpaFiW1Wpa_supplicant1*, char const*, _GVariant*, chip::DeviceLayer::ConnectivityManagerImpl*) const Unexecuted instantiation: BluezAdvertisement.cpp:chip::DeviceLayer::Internal::BluezAdvertisement::CreateLEAdvertisement()::$_0::operator()(_BluezLEAdvertisement1*, _GDBusMethodInvocation*, chip::DeviceLayer::Internal::BluezAdvertisement*) const Unexecuted instantiation: BluezEndpoint.cpp:chip::DeviceLayer::Internal::BluezEndpoint::SetupGattService()::$_0::operator()(_BluezGattCharacteristic1*, _GDBusMethodInvocation*, _GVariant*, chip::DeviceLayer::Internal::BluezEndpoint*) const Unexecuted instantiation: BluezEndpoint.cpp:chip::DeviceLayer::Internal::BluezEndpoint::SetupGattService()::$_1::operator()(_BluezGattCharacteristic1*, _GDBusMethodInvocation*, _GUnixFDList*, _GVariant*, chip::DeviceLayer::Internal::BluezEndpoint*) const Unexecuted instantiation: BluezEndpoint.cpp:chip::DeviceLayer::Internal::BluezEndpoint::SetupGattService()::$_2::operator()(_BluezGattCharacteristic1*, _GDBusMethodInvocation*, _GVariant*, chip::DeviceLayer::Internal::BluezEndpoint*) const Unexecuted instantiation: BluezEndpoint.cpp:chip::DeviceLayer::Internal::BluezEndpoint::SetupGattService()::$_3::operator()(_BluezGattCharacteristic1*, _GDBusMethodInvocation*, _GUnixFDList*, _GVariant*, chip::DeviceLayer::Internal::BluezEndpoint*) const Unexecuted instantiation: BluezEndpoint.cpp:chip::DeviceLayer::Internal::BluezEndpoint::SetupGattService()::$_4::operator()(_BluezGattCharacteristic1*, _GDBusMethodInvocation*, chip::DeviceLayer::Internal::BluezEndpoint*) const Unexecuted instantiation: BluezObjectManager.cpp:chip::DeviceLayer::Internal::BluezObjectManager::SetupObjectManager()::$_0::operator()(_GDBusObjectManager*, _GDBusObject*, chip::DeviceLayer::Internal::BluezObjectManager*) const Unexecuted instantiation: BluezObjectManager.cpp:chip::DeviceLayer::Internal::BluezObjectManager::SetupObjectManager()::$_1::operator()(_GDBusObjectManager*, _GDBusObject*, chip::DeviceLayer::Internal::BluezObjectManager*) const Unexecuted instantiation: BluezObjectManager.cpp:chip::DeviceLayer::Internal::BluezObjectManager::SetupObjectManager()::$_2::operator()(_GDBusObjectManagerClient*, _GDBusObjectProxy*, _GDBusProxy*, _GVariant*, char const* const*, chip::DeviceLayer::Internal::BluezObjectManager*) const  | 
492  |  | /**  | 
493  |  |  * g_signal_connect_after:  | 
494  |  |  * @instance: the instance to connect to.  | 
495  |  |  * @detailed_signal: a string of the form "signal-name::detail".  | 
496  |  |  * @c_handler: the #GCallback to connect.  | 
497  |  |  * @data: data to pass to @c_handler calls.  | 
498  |  |  *   | 
499  |  |  * Connects a #GCallback function to a signal for a particular object.  | 
500  |  |  *   | 
501  |  |  * The handler will be called after the default handler of the signal.  | 
502  |  |  *   | 
503  |  |  * Returns: the handler ID, of type #gulong (always greater than 0 for successful connections)  | 
504  |  |  */  | 
505  |  | #define g_signal_connect_after(instance, detailed_signal, c_handler, data) \  | 
506  |  |     g_signal_connect_data ((instance), (detailed_signal), (c_handler), (data), NULL, G_CONNECT_AFTER)  | 
507  |  | /**  | 
508  |  |  * g_signal_connect_swapped:  | 
509  |  |  * @instance: the instance to connect to.  | 
510  |  |  * @detailed_signal: a string of the form "signal-name::detail".  | 
511  |  |  * @c_handler: the #GCallback to connect.  | 
512  |  |  * @data: data to pass to @c_handler calls.  | 
513  |  |  *   | 
514  |  |  * Connects a #GCallback function to a signal for a particular object.  | 
515  |  |  *   | 
516  |  |  * The instance on which the signal is emitted and @data will be swapped when   | 
517  |  |  * calling the handler. This is useful when calling pre-existing functions to  | 
518  |  |  * operate purely on the @data, rather than the @instance: swapping the  | 
519  |  |  * parameters avoids the need to write a wrapper function.  | 
520  |  |  *  | 
521  |  |  * For example, this allows the shorter code:  | 
522  |  |  * |[<!-- language="C" -->  | 
523  |  |  * g_signal_connect_swapped (button, "clicked",  | 
524  |  |  *                           (GCallback) gtk_widget_hide, other_widget);  | 
525  |  |  * ]|  | 
526  |  |  *  | 
527  |  |  * Rather than the cumbersome:  | 
528  |  |  * |[<!-- language="C" -->  | 
529  |  |  * static void  | 
530  |  |  * button_clicked_cb (GtkButton *button, GtkWidget *other_widget)  | 
531  |  |  * { | 
532  |  |  *     gtk_widget_hide (other_widget);  | 
533  |  |  * }  | 
534  |  |  *  | 
535  |  |  * ...  | 
536  |  |  *  | 
537  |  |  * g_signal_connect (button, "clicked",  | 
538  |  |  *                   (GCallback) button_clicked_cb, other_widget);  | 
539  |  |  * ]|  | 
540  |  |  *   | 
541  |  |  * Returns: the handler ID, of type #gulong (always greater than 0 for successful connections)  | 
542  |  |  */  | 
543  |  | #define g_signal_connect_swapped(instance, detailed_signal, c_handler, data) \  | 
544  |  |     g_signal_connect_data ((instance), (detailed_signal), (c_handler), (data), NULL, G_CONNECT_SWAPPED)  | 
545  |  | /**  | 
546  |  |  * g_signal_handlers_disconnect_by_func:  | 
547  |  |  * @instance: The instance to remove handlers from.  | 
548  |  |  * @func: The C closure callback of the handlers (useless for non-C closures).  | 
549  |  |  * @data: The closure data of the handlers' closures.  | 
550  |  |  *   | 
551  |  |  * Disconnects all handlers on an instance that match @func and @data.  | 
552  |  |  *   | 
553  |  |  * Returns: The number of handlers that matched.  | 
554  |  |  */  | 
555  |  | #define g_signal_handlers_disconnect_by_func(instance, func, data)            \  | 
556  |  |     g_signal_handlers_disconnect_matched ((instance),               \  | 
557  |  |             (GSignalMatchType) (G_SIGNAL_MATCH_FUNC | G_SIGNAL_MATCH_DATA), \  | 
558  |  |             0, 0, NULL, (func), (data))  | 
559  |  |  | 
560  |  | /**  | 
561  |  |  * g_signal_handlers_disconnect_by_data:  | 
562  |  |  * @instance: The instance to remove handlers from  | 
563  |  |  * @data: the closure data of the handlers' closures  | 
564  |  |  *  | 
565  |  |  * Disconnects all handlers on an instance that match @data.  | 
566  |  |  *  | 
567  |  |  * Returns: The number of handlers that matched.  | 
568  |  |  *  | 
569  |  |  * Since: 2.32  | 
570  |  |  */  | 
571  |  | #define g_signal_handlers_disconnect_by_data(instance, data) \  | 
572  | 0  |   g_signal_handlers_disconnect_matched ((instance), G_SIGNAL_MATCH_DATA, 0, 0, NULL, NULL, (data))  | 
573  |  |  | 
574  |  | /**  | 
575  |  |  * g_signal_handlers_block_by_func:  | 
576  |  |  * @instance: The instance to block handlers from.  | 
577  |  |  * @func: The C closure callback of the handlers (useless for non-C closures).  | 
578  |  |  * @data: The closure data of the handlers' closures.  | 
579  |  |  *   | 
580  |  |  * Blocks all handlers on an instance that match @func and @data.  | 
581  |  |  *   | 
582  |  |  * Returns: The number of handlers that matched.  | 
583  |  |  */  | 
584  |  | #define g_signal_handlers_block_by_func(instance, func, data)             \  | 
585  |  |     g_signal_handlers_block_matched      ((instance),               \  | 
586  |  |                   (GSignalMatchType) (G_SIGNAL_MATCH_FUNC | G_SIGNAL_MATCH_DATA), \  | 
587  |  |                   0, 0, NULL, (func), (data))  | 
588  |  | /**  | 
589  |  |  * g_signal_handlers_unblock_by_func:  | 
590  |  |  * @instance: The instance to unblock handlers from.  | 
591  |  |  * @func: The C closure callback of the handlers (useless for non-C closures).  | 
592  |  |  * @data: The closure data of the handlers' closures.  | 
593  |  |  *   | 
594  |  |  * Unblocks all handlers on an instance that match @func and @data.  | 
595  |  |  *   | 
596  |  |  * Returns: The number of handlers that matched.  | 
597  |  |  */  | 
598  |  | #define g_signal_handlers_unblock_by_func(instance, func, data)             \  | 
599  |  |     g_signal_handlers_unblock_matched    ((instance),               \  | 
600  |  |                   (GSignalMatchType) (G_SIGNAL_MATCH_FUNC | G_SIGNAL_MATCH_DATA), \  | 
601  |  |                   0, 0, NULL, (func), (data))  | 
602  |  |  | 
603  |  |  | 
604  |  | GLIB_AVAILABLE_IN_ALL  | 
605  |  | gboolean g_signal_accumulator_true_handled (GSignalInvocationHint *ihint,  | 
606  |  |               GValue                *return_accu,  | 
607  |  |               const GValue          *handler_return,  | 
608  |  |               gpointer               dummy);  | 
609  |  |  | 
610  |  | GLIB_AVAILABLE_IN_ALL  | 
611  |  | gboolean g_signal_accumulator_first_wins   (GSignalInvocationHint *ihint,  | 
612  |  |                                             GValue                *return_accu,  | 
613  |  |                                             const GValue          *handler_return,  | 
614  |  |                                             gpointer               dummy);  | 
615  |  |  | 
616  |  | /*< private >*/  | 
617  |  | GLIB_AVAILABLE_IN_ALL  | 
618  |  | void   g_signal_handlers_destroy        (gpointer     instance);  | 
619  |  | void   _g_signals_destroy         (GType      itype);  | 
620  |  |  | 
621  |  | G_END_DECLS  | 
622  |  |  | 
623  |  | #endif /* __G_SIGNAL_H__ */  |