1*4882a593Smuzhiyun /***********************************************************
2*4882a593Smuzhiyun
3*4882a593Smuzhiyun Copyright 1987, 1998 The Open Group
4*4882a593Smuzhiyun
5*4882a593Smuzhiyun Permission to use, copy, modify, distribute, and sell this software and its
6*4882a593Smuzhiyun documentation for any purpose is hereby granted without fee, provided that
7*4882a593Smuzhiyun the above copyright notice appear in all copies and that both that
8*4882a593Smuzhiyun copyright notice and this permission notice appear in supporting
9*4882a593Smuzhiyun documentation.
10*4882a593Smuzhiyun
11*4882a593Smuzhiyun The above copyright notice and this permission notice shall be included in
12*4882a593Smuzhiyun all copies or substantial portions of the Software.
13*4882a593Smuzhiyun
14*4882a593Smuzhiyun THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15*4882a593Smuzhiyun IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16*4882a593Smuzhiyun FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17*4882a593Smuzhiyun OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
18*4882a593Smuzhiyun AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
19*4882a593Smuzhiyun CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
20*4882a593Smuzhiyun
21*4882a593Smuzhiyun Except as contained in this notice, the name of The Open Group shall not be
22*4882a593Smuzhiyun used in advertising or otherwise to promote the sale, use or other dealings
23*4882a593Smuzhiyun in this Software without prior written authorization from The Open Group.
24*4882a593Smuzhiyun
25*4882a593Smuzhiyun Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts.
26*4882a593Smuzhiyun
27*4882a593Smuzhiyun All Rights Reserved
28*4882a593Smuzhiyun
29*4882a593Smuzhiyun Permission to use, copy, modify, and distribute this software and its
30*4882a593Smuzhiyun documentation for any purpose and without fee is hereby granted,
31*4882a593Smuzhiyun provided that the above copyright notice appear in all copies and that
32*4882a593Smuzhiyun both that copyright notice and this permission notice appear in
33*4882a593Smuzhiyun supporting documentation, and that the name of Digital not be
34*4882a593Smuzhiyun used in advertising or publicity pertaining to distribution of the
35*4882a593Smuzhiyun software without specific, written prior permission.
36*4882a593Smuzhiyun
37*4882a593Smuzhiyun DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
38*4882a593Smuzhiyun ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
39*4882a593Smuzhiyun DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
40*4882a593Smuzhiyun ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
41*4882a593Smuzhiyun WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
42*4882a593Smuzhiyun ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
43*4882a593Smuzhiyun SOFTWARE.
44*4882a593Smuzhiyun
45*4882a593Smuzhiyun ******************************************************************/
46*4882a593Smuzhiyun
47*4882a593Smuzhiyun #ifndef CALLBACK_H
48*4882a593Smuzhiyun #define CALLBACK_H
49*4882a593Smuzhiyun
50*4882a593Smuzhiyun #include <X11/X.h> /* for GContext, Mask */
51*4882a593Smuzhiyun #include <X11/Xdefs.h> /* for Bool */
52*4882a593Smuzhiyun #include <X11/Xproto.h>
53*4882a593Smuzhiyun #include <X11/Xfuncproto.h>
54*4882a593Smuzhiyun
55*4882a593Smuzhiyun /*
56*4882a593Smuzhiyun * callback manager stuff
57*4882a593Smuzhiyun */
58*4882a593Smuzhiyun
59*4882a593Smuzhiyun #ifndef _XTYPEDEF_CALLBACKLISTPTR
60*4882a593Smuzhiyun typedef struct _CallbackList *CallbackListPtr; /* also in misc.h */
61*4882a593Smuzhiyun
62*4882a593Smuzhiyun #define _XTYPEDEF_CALLBACKLISTPTR
63*4882a593Smuzhiyun #endif
64*4882a593Smuzhiyun
65*4882a593Smuzhiyun typedef void (*CallbackProcPtr) (CallbackListPtr *, void *, void *);
66*4882a593Smuzhiyun
67*4882a593Smuzhiyun extern _X_EXPORT Bool AddCallback(CallbackListPtr *pcbl,
68*4882a593Smuzhiyun CallbackProcPtr callback,
69*4882a593Smuzhiyun void *data);
70*4882a593Smuzhiyun
71*4882a593Smuzhiyun extern _X_EXPORT Bool DeleteCallback(CallbackListPtr *pcbl,
72*4882a593Smuzhiyun CallbackProcPtr callback,
73*4882a593Smuzhiyun void *data);
74*4882a593Smuzhiyun
75*4882a593Smuzhiyun extern _X_EXPORT void _CallCallbacks(CallbackListPtr *pcbl,
76*4882a593Smuzhiyun void *call_data);
77*4882a593Smuzhiyun
78*4882a593Smuzhiyun static inline void
CallCallbacks(CallbackListPtr * pcbl,void * call_data)79*4882a593Smuzhiyun CallCallbacks(CallbackListPtr *pcbl, void *call_data)
80*4882a593Smuzhiyun {
81*4882a593Smuzhiyun if (!pcbl || !*pcbl)
82*4882a593Smuzhiyun return;
83*4882a593Smuzhiyun _CallCallbacks(pcbl, call_data);
84*4882a593Smuzhiyun }
85*4882a593Smuzhiyun
86*4882a593Smuzhiyun extern _X_EXPORT void DeleteCallbackList(CallbackListPtr *pcbl);
87*4882a593Smuzhiyun
88*4882a593Smuzhiyun extern _X_EXPORT void InitCallbackManager(void);
89*4882a593Smuzhiyun extern _X_EXPORT void DeleteCallbackManager(void);
90*4882a593Smuzhiyun
91*4882a593Smuzhiyun #endif /* CALLBACK_H */
92