CallbackI.h revision 444c061a 
1/* $Xorg: CallbackI.h,v 1.4 2001/02/09 02:03:54 xorgcvs Exp $ */
2/***********************************************************
3
4Copyright 1987, 1988, 1998  The Open Group
5
6Permission to use, copy, modify, distribute, and sell this software and its
7documentation for any purpose is hereby granted without fee, provided that
8the above copyright notice appear in all copies and that both that
9copyright notice and this permission notice appear in supporting
10documentation.
11
12The above copyright notice and this permission notice shall be included in
13all copies or substantial portions of the Software.
14
15THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
18OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
19AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
20CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
21
22Except as contained in this notice, the name of The Open Group shall not be
23used in advertising or otherwise to promote the sale, use or other dealings
24in this Software without prior written authorization from The Open Group.
25
26
27Copyright 1987, 1988 by Digital Equipment Corporation, Maynard, Massachusetts.
28
29                        All Rights Reserved
30
31Permission to use, copy, modify, and distribute this software and its
32documentation for any purpose and without fee is hereby granted,
33provided that the above copyright notice appear in all copies and that
34both that copyright notice and this permission notice appear in
35supporting documentation, and that the name of Digital not be
36used in advertising or publicity pertaining to distribution of the
37software without specific, written prior permission.
38
39DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
40ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
41DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
42ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
43WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
44ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
45SOFTWARE.
46
47******************************************************************/
48/* $XFree86$ */
49
50/****************************************************************
51 *
52 * Callbacks
53 *
54 ****************************************************************/
55
56typedef XrmResource **CallbackTable;
57
58#define _XtCBCalling 1
59#define _XtCBFreeAfterCalling 2
60
61typedef struct internalCallbackRec {
62    unsigned short count;
63    char	   is_padded;	/* contains NULL padding for external form */
64    char	   call_state;  /* combination of _XtCB{FreeAfter}Calling */
65#ifdef LONG64
66    unsigned int   align_pad;	/* padding to align callback list */
67#endif
68    /* XtCallbackList */
69} InternalCallbackRec, *InternalCallbackList;
70
71typedef Boolean (*_XtConditionProc)(
72    XtPointer	/* data */
73);
74
75extern void _XtAddCallback(
76    InternalCallbackList*	/* callbacks */,
77    XtCallbackProc		/* callback */,
78    XtPointer 			/* closure */
79);
80
81extern void _XtAddCallbackOnce(
82    InternalCallbackList*	/* callbacks */,
83    XtCallbackProc		/* callback */,
84    XtPointer 			/* closure */
85);
86
87extern InternalCallbackList _XtCompileCallbackList(
88    XtCallbackList		/* xtcallbacks */
89);
90
91extern XtCallbackList _XtGetCallbackList(
92    InternalCallbackList*	/* callbacks */
93);
94
95extern void _XtRemoveAllCallbacks(
96    InternalCallbackList*	/* callbacks */
97);
98
99extern void _XtRemoveCallback(
100    InternalCallbackList*	/* callbacks */,
101    XtCallbackProc		/* callback */,
102    XtPointer			/* closure */
103);
104
105extern void _XtPeekCallback(
106    Widget			/* widget */,
107    XtCallbackList		/* callbacks */,
108    XtCallbackProc *		/* callback */,
109    XtPointer *			/* closure */
110);
111
112extern void _XtCallConditionalCallbackList(
113    Widget			/* widget */,
114    XtCallbackList		/* callbacks */,
115    XtPointer			/* call_data */,
116    _XtConditionProc		/* cond_proc */
117);
118