[OpenSPARC-T2-SAM] / sam-t2 / devtools / amd64 / man / man3 / Tk_GetUid.3

'\"
'\" Copyright (c) 1990 The Regents of the University of California.
'\" Copyright (c) 1994-1996 Sun Microsystems, Inc.
'\"
'\" See the file "license.terms" for information on usage and redistribution
'\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
'\" 
'\" RCS: @(#) $Id: GetUid.3,v 1.2.26.2 2004/02/17 13:47:18 dkf Exp $
'\" 
'\" The definitions below are for supplemental macros used in Tcl/Tk
'\" manual entries.
'\"
'\" .AP type name in/out ?indent?
'\"	Start paragraph describing an argument to a library procedure.
'\"	type is type of argument (int, etc.), in/out is either "in", "out",
'\"	or "in/out" to describe whether procedure reads or modifies arg,
'\"	and indent is equivalent to second arg of .IP (shouldn't ever be
'\"	needed;  use .AS below instead)
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'\" .AS ?type? ?name?
'\"	Give maximum sizes of arguments for setting tab stops.  Type and
'\"	name are examples of largest possible arguments that will be passed
'\"	to .AP later.  If args are omitted, default tab stops are used.
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'\"	options follow on successive lines, in four columns separated
'\"	by tabs.
'\"
'\" .SE
'\"	End of list of standard options for a Tk widget.
'\"
'\" .OP cmdName dbName dbClass
'\"	Start of description of a specific option.  cmdName gives the
'\"	option's name as specified in the class command, dbName gives
'\"	the option's name in the option database, and dbClass gives
'\"	the option's class in the option database.
'\"
'\" .UL arg1 arg2
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'\" RCS: @(#) $Id: man.macros,v 1.4 2000/08/25 06:18:32 ericm Exp $
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.TH Tk_GetUid 3 "" Tk "Tk Library Procedures"
.BS
.SH NAME
Tk_GetUid, Tk_Uid \- convert from string to unique identifier
.SH SYNOPSIS
.nf
\fB#include <tk.h>\fR
.sp
Tk_Uid
\fBTk_GetUid\fR(\fIstring\fR)
.SH ARGUMENTS
.AP char *string in
String for which the corresponding unique identifier is
desired.
.BE

.SH DESCRIPTION
.PP
\fBTk_GetUid\fR returns the unique identifier corresponding
to \fIstring\fR.
Unique identifiers are similar to atoms in Lisp, and are used
in Tk to speed up comparisons and
searches.  A unique identifier (type Tk_Uid) is a string pointer
and may be used anywhere that a variable of type ``char *''
could be used.  However, there is guaranteed to be exactly
one unique identifier for any given string value.  If \fBTk_GetUid\fR
is called twice, once with string \fIa\fR and once with string
\fIb\fR, and if \fIa\fR and \fIb\fR have the same string value
(strcmp(a, b) == 0), then \fBTk_GetUid\fR will return exactly
the same Tk_Uid value for each call (Tk_GetUid(a) == Tk_GetUid(b)).
This means that variables of type
Tk_Uid may be compared directly (x == y) without having to call
\fBstrcmp\fR.
In addition, the return value from \fBTk_GetUid\fR will have the
same string value as its argument (strcmp(Tk_GetUid(a), a) == 0).

.SH KEYWORDS
atom, unique identifier
Commit	Line	Data
920dae64 AT	1	'\"
	2	'\" Copyright (c) 1990 The Regents of the University of California.
	3	'\" Copyright (c) 1994-1996 Sun Microsystems, Inc.
	4	'\"
	5	'\" See the file "license.terms" for information on usage and redistribution
	6	'\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
	7	'\"
	8	'\" RCS: @(#) $Id: GetUid.3,v 1.2.26.2 2004/02/17 13:47:18 dkf Exp $
	9	'\"
	10	'\" The definitions below are for supplemental macros used in Tcl/Tk
	11	'\" manual entries.
	12	'\"
	13	'\" .AP type name in/out ?indent?
	14	'\" Start paragraph describing an argument to a library procedure.
	15	'\" type is type of argument (int, etc.), in/out is either "in", "out",
	16	'\" or "in/out" to describe whether procedure reads or modifies arg,
	17	'\" and indent is equivalent to second arg of .IP (shouldn't ever be
	18	'\" needed; use .AS below instead)
	19	'\"
	20	'\" .AS ?type? ?name?
	21	'\" Give maximum sizes of arguments for setting tab stops. Type and
	22	'\" name are examples of largest possible arguments that will be passed
	23	'\" to .AP later. If args are omitted, default tab stops are used.
	24	'\"
	25	'\" .BS
	26	'\" Start box enclosure. From here until next .BE, everything will be
	27	'\" enclosed in one large box.
	28	'\"
	29	'\" .BE
	30	'\" End of box enclosure.
	31	'\"
	32	'\" .CS
	33	'\" Begin code excerpt.
	34	'\"
	35	'\" .CE
	36	'\" End code excerpt.
	37	'\"
	38	'\" .VS ?version? ?br?
	39	'\" Begin vertical sidebar, for use in marking newly-changed parts
	40	'\" of man pages. The first argument is ignored and used for recording
	41	'\" the version when the .VS was added, so that the sidebars can be
	42	'\" found and removed when they reach a certain age. If another argument
	43	'\" is present, then a line break is forced before starting the sidebar.
	44	'\"
	45	'\" .VE
	46	'\" End of vertical sidebar.
	47	'\"
	48	'\" .DS
	49	'\" Begin an indented unfilled display.
	50	'\"
	51	'\" .DE
	52	'\" End of indented unfilled display.
	53	'\"
	54	'\" .SO
	55	'\" Start of list of standard options for a Tk widget. The
	56	'\" options follow on successive lines, in four columns separated
	57	'\" by tabs.
	58	'\"
	59	'\" .SE
	60	'\" End of list of standard options for a Tk widget.
	61	'\"
	62	'\" .OP cmdName dbName dbClass
	63	'\" Start of description of a specific option. cmdName gives the
	64	'\" option's name as specified in the class command, dbName gives
65	'\" the option's name in the option database, and dbClass gives
66	'\" the option's class in the option database.
67	'\"
68	'\" .UL arg1 arg2
69	'\" Print arg1 underlined, then print arg2 normally.
70	'\"
71	'\" RCS: @(#) $Id: man.macros,v 1.4 2000/08/25 06:18:32 ericm Exp $
72	'\"
73	'\" # Set up traps and other miscellaneous stuff for Tcl/Tk man pages.
74	.if t .wh -1.3i ^B
75	.nr ^l \n(.l
76	.ad b
77	'\" # Start an argument description
78	.de AP
79	.ie !"\\$4"" .TP \\$4
80	.el \{\
81	. ie !"\\$2"" .TP \\n()Cu
82	. el .TP 15
83	.\}
84	.ta \\n()Au \\n()Bu
85	.ie !"\\$3"" \{\
86	\&\\$1 \\fI\\$2\\fP (\\$3)
87	.\".b
88	.\}
89	.el \{\
90	.br
91	.ie !"\\$2"" \{\
92	\&\\$1 \\fI\\$2\\fP
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94	.el \{\
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98	..
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103	.nr )B \\n()Au+15n
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105	.if !"\\$2"" .nr )B \\w'\\$2'u+\\n()Au+3n
106	.nr )C \\n()Bu+\\w'(in/out)'u+2n
107	..
108	.AS Tcl_Interp Tcl_CreateInterp in/out
109	'\" # BS - start boxed text
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129	.\" box if the box started on an earlier page.
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132	.\}
133	.el \}\
134	\h'-1.5n'\L'\|\\n(^yu-1v'\h'\\n(^lu+3n'\L'\\n(^tu+1v-\\n(^yu'\l'\|0u-1.5n\(ul'
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162	.\}
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175	.\" draw two sides but no top otherwise.
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177	.el \h'-1.5n'\L'\|\\n(^yu-1v'\h'\\n(^lu+3n'\L'\\n(^tu+1v-\\n(^yu'\h'\|0u'\c
178	.\}
179	.if \\n(^v \{\
180	.nr ^x \\n(^tu+1v-\\n(^Yu
181	\kx\h'-\\nxu'\h'\|\\n(^lu+3n'\ky\L'-\\n(^xu'\v'\\n(^xu'\h'\|0u'\c
182	.\}
183	.bp
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186	.if \\n(^b \{\
187	.mk ^y
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189	.\}
190	.if \\n(^v \{\
191	.mk ^Y
192	.\}
193	..
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201	.de DE
202	.fi
203	.RE
204	.sp
205	..
206	'\" # SO - start of list of standard options
207	.de SO
208	.SH "STANDARD OPTIONS"
209	.LP
210	.nf
211	.ta 5.5c 11c
212	.ft B
213	..
214	'\" # SE - end of list of standard options
215	.de SE
216	.fi
217	.ft R
218	.LP
219	See the \\fBoptions\\fR manual entry for details on the standard options.
220	..
221	'\" # OP - start of full description for a single option
222	.de OP
223	.LP
224	.nf
225	.ta 4c
226	Command-Line Name: \\fB\\$1\\fR
227	Database Name: \\fB\\$2\\fR
228	Database Class: \\fB\\$3\\fR
229	.fi
230	.IP
231	..
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233	.de CS
234	.RS
235	.nf
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238	'\" # CE - end code excerpt
239	.de CE
240	.fi
241	.RE
242	..
243	.de UL
244	\\$1\l'\|0\(ul'\\$2
245	..
246	.TH Tk_GetUid 3 "" Tk "Tk Library Procedures"
247	.BS
248	.SH NAME
249	Tk_GetUid, Tk_Uid \- convert from string to unique identifier
250	.SH SYNOPSIS
251	.nf
252	\fB#include <tk.h>\fR
253	.sp
254	Tk_Uid
255	\fBTk_GetUid\fR(\fIstring\fR)
256	.SH ARGUMENTS
257	.AP char *string in
258	String for which the corresponding unique identifier is
259	desired.
260	.BE
261
262	.SH DESCRIPTION
263	.PP
264	\fBTk_GetUid\fR returns the unique identifier corresponding
265	to \fIstring\fR.
266	Unique identifiers are similar to atoms in Lisp, and are used
267	in Tk to speed up comparisons and
268	searches. A unique identifier (type Tk_Uid) is a string pointer
269	and may be used anywhere that a variable of type ``char *''
270	could be used. However, there is guaranteed to be exactly
271	one unique identifier for any given string value. If \fBTk_GetUid\fR
272	is called twice, once with string \fIa\fR and once with string
273	\fIb\fR, and if \fIa\fR and \fIb\fR have the same string value
274	(strcmp(a, b) == 0), then \fBTk_GetUid\fR will return exactly
275	the same Tk_Uid value for each call (Tk_GetUid(a) == Tk_GetUid(b)).
276	This means that variables of type
277	Tk_Uid may be compared directly (x == y) without having to call
278	\fBstrcmp\fR.
279	In addition, the return value from \fBTk_GetUid\fR will have the
280	same string value as its argument (strcmp(Tk_GetUid(a), a) == 0).
281
282	.SH KEYWORDS
283	atom, unique identifier