CallbackI.h revision fdf6a26f 
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#if __STDC_VERSION__ >= 199901L
66    /* When compiling with C99 or newer, use a flexible member to ensure
67     * padding and alignment for sizeof(). */
68    XtCallbackRec callbacks[];
69#elif defined(LONG64)
70    unsigned int   align_pad;	/* padding to align callback list */
71#endif
72    /* XtCallbackList */
73} InternalCallbackRec, *InternalCallbackList;
74
75typedef Boolean (*_XtConditionProc)(
76    XtPointer	/* data */
77);
78
79extern void _XtAddCallback(
80    InternalCallbackList*	/* callbacks */,
81    XtCallbackProc		/* callback */,
82    XtPointer 			/* closure */
83);
84
85extern void _XtAddCallbackOnce(
86    InternalCallbackList*	/* callbacks */,
87    XtCallbackProc		/* callback */,
88    XtPointer 			/* closure */
89);
90
91extern InternalCallbackList _XtCompileCallbackList(
92    XtCallbackList		/* xtcallbacks */
93);
94
95extern XtCallbackList _XtGetCallbackList(
96    InternalCallbackList*	/* callbacks */
97);
98
99extern void _XtRemoveAllCallbacks(
100    InternalCallbackList*	/* callbacks */
101);
102
103extern void _XtRemoveCallback(
104    InternalCallbackList*	/* callbacks */,
105    XtCallbackProc		/* callback */,
106    XtPointer			/* closure */
107);
108
109extern void _XtPeekCallback(
110    Widget			/* widget */,
111    XtCallbackList		/* callbacks */,
112    XtCallbackProc *		/* callback */,
113    XtPointer *			/* closure */
114);
115
116extern void _XtCallConditionalCallbackList(
117    Widget			/* widget */,
118    XtCallbackList		/* callbacks */,
119    XtPointer			/* call_data */,
120    _XtConditionProc		/* cond_proc */
121);
122
123_XFUNCPROTOEND
124