CallbackI.h revision 249c3046 
1/***********************************************************
2
3Copyright 1987, 1988, 1998  The Open Group
4
5Permission to use, copy, modify, distribute, and sell this software and its
6documentation for any purpose is hereby granted without fee, provided that
7the above copyright notice appear in all copies and that both that
8copyright notice and this permission notice appear in supporting
9documentation.
10
11The above copyright notice and this permission notice shall be included in
12all copies or substantial portions of the Software.
13
14THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
17OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
18AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
19CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
20
21Except as contained in this notice, the name of The Open Group shall not be
22used in advertising or otherwise to promote the sale, use or other dealings
23in this Software without prior written authorization from The Open Group.
24
25
26Copyright 1987, 1988 by Digital Equipment Corporation, Maynard, Massachusetts.
27
28                        All Rights Reserved
29
30Permission to use, copy, modify, and distribute this software and its
31documentation for any purpose and without fee is hereby granted,
32provided that the above copyright notice appear in all copies and that
33both that copyright notice and this permission notice appear in
34supporting documentation, and that the name of Digital not be
35used in advertising or publicity pertaining to distribution of the
36software without specific, written prior permission.
37
38DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
39ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
40DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
41ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
42WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
43ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
44SOFTWARE.
45
46******************************************************************/
47
48/****************************************************************
49 *
50 * Callbacks
51 *
52 ****************************************************************/
53
54typedef XrmResource **CallbackTable;
55
56#define _XtCBCalling 1
57#define _XtCBFreeAfterCalling 2
58
59_XFUNCPROTOBEGIN
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
119_XFUNCPROTOEND
120