summaryrefslogtreecommitdiffstats
path: root/doc/html/qchar.html
blob: 7f2ae636ecd7cf701f6f838c0812d798075669b7 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<!-- /home/espenr/tmp/qt-3.3.8-espenr-2499/qt-x11-free-3.3.8/src/tools/qstring.cpp:166 -->
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>QChar Class</title>
<style type="text/css"><!--
fn { margin-left: 1cm; text-indent: -1cm; }
a:link { color: #004faf; text-decoration: none }
a:visited { color: #672967; text-decoration: none }
body { background: #ffffff; color: black; }
--></style>
</head>
<body>

<table border="0" cellpadding="0" cellspacing="0" width="100%">
<tr bgcolor="#E5E5E5">
<td valign=center>
 <a href="index.html">
<font color="#004faf">Home</font></a>
 | <a href="classes.html">
<font color="#004faf">All&nbsp;Classes</font></a>
 | <a href="mainclasses.html">
<font color="#004faf">Main&nbsp;Classes</font></a>
 | <a href="annotated.html">
<font color="#004faf">Annotated</font></a>
 | <a href="groups.html">
<font color="#004faf">Grouped&nbsp;Classes</font></a>
 | <a href="functions.html">
<font color="#004faf">Functions</font></a>
</td>
<td align="right" valign="center"><img src="logo32.png" align="right" width="64" height="32" border="0"></td></tr></table><h1 align=center>QChar Class Reference</h1>

<p>The QChar class provides a lightweight Unicode character.
<a href="#details">More...</a>
<p>Almost all the functions in this class are <a href="threads.html#reentrant">reentrant</a> when Qt is built with thread support. The exception is <a href="#decomposition"><b>decomposition</b></a>().
</p><p><tt>#include &lt;<a href="qstring-h.html">qstring.h</a>&gt;</tt>
<p><a href="qchar-members.html">List of all member functions.</a>
<h2>Public Members</h2>
<ul>
<li class=fn><a href="#QChar"><b>QChar</b></a> ()</li>
<li class=fn><a href="#QChar-2"><b>QChar</b></a> ( char&nbsp;c )</li>
<li class=fn><a href="#QChar-3"><b>QChar</b></a> ( uchar&nbsp;c )</li>
<li class=fn><a href="#QChar-4"><b>QChar</b></a> ( uchar&nbsp;c, uchar&nbsp;r )</li>
<li class=fn><a href="#QChar-5"><b>QChar</b></a> ( const&nbsp;QChar&nbsp;&amp;&nbsp;c )</li>
<li class=fn><a href="#QChar-6"><b>QChar</b></a> ( ushort&nbsp;rc )</li>
<li class=fn><a href="#QChar-7"><b>QChar</b></a> ( short&nbsp;rc )</li>
<li class=fn><a href="#QChar-8"><b>QChar</b></a> ( uint&nbsp;rc )</li>
<li class=fn><a href="#QChar-9"><b>QChar</b></a> ( int&nbsp;rc )</li>
<li class=fn>enum <a href="#Category-enum"><b>Category</b></a> { NoCategory, Mark_NonSpacing, Mark_SpacingCombining, Mark_Enclosing, Number_DecimalDigit, Number_Letter, Number_Other, Separator_Space, Separator_Line, Separator_Paragraph, Other_Control, Other_Format, Other_Surrogate, Other_PrivateUse, Other_NotAssigned, Letter_Uppercase, Letter_Lowercase, Letter_Titlecase, Letter_Modifier, Letter_Other, Punctuation_Connector, Punctuation_Dash, Punctuation_Dask = Punctuation_Dash, Punctuation_Open, Punctuation_Close, Punctuation_InitialQuote, Punctuation_FinalQuote, Punctuation_Other, Symbol_Math, Symbol_Currency, Symbol_Modifier, Symbol_Other }</li>
<li class=fn>enum <a href="#Direction-enum"><b>Direction</b></a> { DirL, DirR, DirEN, DirES, DirET, DirAN, DirCS, DirB, DirS, DirWS, DirON, DirLRE, DirLRO, DirAL, DirRLE, DirRLO, DirPDF, DirNSM, DirBN }</li>
<li class=fn>enum <a href="#Decomposition-enum"><b>Decomposition</b></a> { Single, Canonical, Font, NoBreak, Initial, Medial, Final, Isolated, Circle, Super, Sub, Vertical, Wide, Narrow, Small, Square, Compat, Fraction }</li>
<li class=fn>enum <a href="#Joining-enum"><b>Joining</b></a> { OtherJoining, Dual, Right, Center }</li>
<li class=fn>enum <a href="#CombiningClass-enum"><b>CombiningClass</b></a> { Combining_BelowLeftAttached = 200, Combining_BelowAttached = 202, Combining_BelowRightAttached = 204, Combining_LeftAttached = 208, Combining_RightAttached = 210, Combining_AboveLeftAttached = 212, Combining_AboveAttached = 214, Combining_AboveRightAttached = 216, Combining_BelowLeft = 218, Combining_Below = 220, Combining_BelowRight = 222, Combining_Left = 224, Combining_Right = 226, Combining_AboveLeft = 228, Combining_Above = 230, Combining_AboveRight = 232, Combining_DoubleBelow = 233, Combining_DoubleAbove = 234, Combining_IotaSubscript = 240 }</li>
<li class=fn>int <a href="#digitValue"><b>digitValue</b></a> () const</li>
<li class=fn>QChar <a href="#lower"><b>lower</b></a> () const</li>
<li class=fn>QChar <a href="#upper"><b>upper</b></a> () const</li>
<li class=fn>Category <a href="#category"><b>category</b></a> () const</li>
<li class=fn>Direction <a href="#direction"><b>direction</b></a> () const</li>
<li class=fn>Joining <a href="#joining"><b>joining</b></a> () const</li>
<li class=fn>bool <a href="#mirrored"><b>mirrored</b></a> () const</li>
<li class=fn>QChar <a href="#mirroredChar"><b>mirroredChar</b></a> () const</li>
<li class=fn>const QString &amp; <a href="#decomposition"><b>decomposition</b></a> () const</li>
<li class=fn>Decomposition <a href="#decompositionTag"><b>decompositionTag</b></a> () const</li>
<li class=fn>unsigned char <a href="#combiningClass"><b>combiningClass</b></a> () const</li>
<li class=fn>char <a href="#latin1"><b>latin1</b></a> () const</li>
<li class=fn>ushort <a href="#unicode"><b>unicode</b></a> () const</li>
<li class=fn>ushort &amp; <a href="#unicode-2"><b>unicode</b></a> ()</li>
<li class=fn><a href="#operator-char"><b>operator char</b></a> () const</li>
<li class=fn>bool <a href="#isNull"><b>isNull</b></a> () const</li>
<li class=fn>bool <a href="#isPrint"><b>isPrint</b></a> () const</li>
<li class=fn>bool <a href="#isPunct"><b>isPunct</b></a> () const</li>
<li class=fn>bool <a href="#isSpace"><b>isSpace</b></a> () const</li>
<li class=fn>bool <a href="#isMark"><b>isMark</b></a> () const</li>
<li class=fn>bool <a href="#isLetter"><b>isLetter</b></a> () const</li>
<li class=fn>bool <a href="#isNumber"><b>isNumber</b></a> () const</li>
<li class=fn>bool <a href="#isLetterOrNumber"><b>isLetterOrNumber</b></a> () const</li>
<li class=fn>bool <a href="#isDigit"><b>isDigit</b></a> () const</li>
<li class=fn>bool <a href="#isSymbol"><b>isSymbol</b></a> () const</li>
<li class=fn>uchar <a href="#cell"><b>cell</b></a> () const</li>
<li class=fn>uchar <a href="#row"><b>row</b></a> () const</li>
</ul>
<h2>Static Public Members</h2>
<ul>
<li class=fn>bool networkOrdered () &nbsp;<em>(obsolete)</em></li>
</ul>
<h2>Related Functions</h2>
<ul>
<li class=fn>bool <a href="#operator-eq-eq"><b>operator==</b></a> ( QChar&nbsp;c1, QChar&nbsp;c2 )</li>
<li class=fn>bool <a href="#operator-eq-eq-2"><b>operator==</b></a> ( char&nbsp;ch, QChar&nbsp;c )</li>
<li class=fn>bool <a href="#operator-eq-eq-3"><b>operator==</b></a> ( QChar&nbsp;c, char&nbsp;ch )</li>
<li class=fn>int <a href="#operator!-eq"><b>operator!=</b></a> ( QChar&nbsp;c1, QChar&nbsp;c2 )</li>
<li class=fn>int <a href="#operator!-eq-2"><b>operator!=</b></a> ( char&nbsp;ch, QChar&nbsp;c )</li>
<li class=fn>int <a href="#operator!-eq-3"><b>operator!=</b></a> ( QChar&nbsp;c, char&nbsp;ch )</li>
<li class=fn>int <a href="#operator-lt-eq"><b>operator&lt;=</b></a> ( QChar&nbsp;c1, QChar&nbsp;c2 )</li>
<li class=fn>int <a href="#operator-lt-eq-2"><b>operator&lt;=</b></a> ( QChar&nbsp;c, char&nbsp;ch )</li>
<li class=fn>int <a href="#operator-lt-eq-3"><b>operator&lt;=</b></a> ( char&nbsp;ch, QChar&nbsp;c )</li>
<li class=fn>int <a href="#operator-gt-eq"><b>operator&gt;=</b></a> ( QChar&nbsp;c1, QChar&nbsp;c2 )</li>
<li class=fn>int <a href="#operator-gt-eq-2"><b>operator&gt;=</b></a> ( QChar&nbsp;c, char&nbsp;ch )</li>
<li class=fn>int <a href="#operator-gt-eq-3"><b>operator&gt;=</b></a> ( char&nbsp;ch, QChar&nbsp;c )</li>
<li class=fn>int <a href="#operator-lt"><b>operator&lt;</b></a> ( QChar&nbsp;c1, QChar&nbsp;c2 )</li>
<li class=fn>int <a href="#operator-lt-2"><b>operator&lt;</b></a> ( QChar&nbsp;c, char&nbsp;ch )</li>
<li class=fn>int <a href="#operator-lt-3"><b>operator&lt;</b></a> ( char&nbsp;ch, QChar&nbsp;c )</li>
<li class=fn>int <a href="#operator-gt"><b>operator&gt;</b></a> ( QChar&nbsp;c1, QChar&nbsp;c2 )</li>
<li class=fn>int <a href="#operator-gt-2"><b>operator&gt;</b></a> ( QChar&nbsp;c, char&nbsp;ch )</li>
<li class=fn>int <a href="#operator-gt-3"><b>operator&gt;</b></a> ( char&nbsp;ch, QChar&nbsp;c )</li>
</ul>
<hr><a name="details"></a><h2>Detailed Description</h2>



The QChar class provides a lightweight Unicode character.
<p> 
<p> Unicode characters are (so far) 16-bit entities without any markup
or structure. This class represents such an entity. It is
lightweight, so it can be used everywhere. Most compilers treat it
like a "short int".  (In a few years it may be necessary to make
QChar 32-bit when more than 65536 Unicode code points have been
defined and come into use.)
<p> QChar provides a full complement of testing/classification
functions, converting to and from other formats, converting from
composed to decomposed Unicode, and trying to compare and
case-convert if you ask it to.
<p> The classification functions include functions like those in
ctype.h, but operating on the full range of Unicode characters.
They all return TRUE if the character is a certain type of
character; otherwise they return FALSE. These classification
functions are <a href="#isNull">isNull</a>() (returns TRUE if the character is U+0000),
<a href="#isPrint">isPrint</a>() (TRUE if the character is any sort of printable
character, including whitespace), <a href="#isPunct">isPunct</a>() (any sort of
punctation), <a href="#isMark">isMark</a>() (Unicode Mark), isLetter (a letter),
<a href="#isNumber">isNumber</a>() (any sort of numeric character), <a href="#isLetterOrNumber">isLetterOrNumber</a>(),
and <a href="#isDigit">isDigit</a>() (decimal digits). All of these are wrappers around
<a href="#category">category</a>() which return the Unicode-defined category of each
character.
<p> QChar further provides <a href="#direction">direction</a>(), which indicates the "natural"
writing direction of this character. The <a href="#joining">joining</a>() function
indicates how the character joins with its neighbors (needed
mostly for Arabic) and finally <a href="#mirrored">mirrored</a>(), which indicates whether
the character needs to be mirrored when it is printed in its
"unnatural" writing direction.
<p> Composed Unicode characters (like &aring;) can be converted to
decomposed Unicode ("a" followed by "ring above") by using
<a href="#decomposition">decomposition</a>().
<p> In Unicode, comparison is not necessarily possible and case
conversion is very difficult at best. Unicode, covering the
"entire" world, also includes most of the world's case and sorting
problems. Qt tries, but not very hard: <a href="#operator-eq-eq">operator==</a>() and friends
will do comparison based purely on the numeric Unicode value (code
point) of the characters, and <a href="#upper">upper</a>() and <a href="#lower">lower</a>() will do case
changes when the character has a well-defined upper/lower-case
equivalent. There is no provision for locale-dependent case
folding rules or comparison; these functions are meant to be fast
so they can be used unambiguously in data structures. (See
<a href="qstring.html#localeAwareCompare">QString::localeAwareCompare</a>() though.)
<p> The conversion functions include <a href="#unicode">unicode</a>() (to a scalar), <a href="#latin1">latin1</a>()
(to scalar, but converts all non-Latin-1 characters to 0), <a href="#row">row</a>()
(gives the Unicode row), <a href="#cell">cell</a>() (gives the Unicode cell),
<a href="#digitValue">digitValue</a>() (gives the integer value of any of the numerous digit
characters), and a host of constructors.
<p> More information can be found in the document <a href="unicode.html">About Unicode.</a>
<p> <p>See also <a href="qstring.html">QString</a>, <a href="qcharref.html">QCharRef</a>, and <a href="text.html">Text Related Classes</a>.

<hr><h2>Member Type Documentation</h2>
<h3 class=fn><a name="Category-enum"></a>QChar::Category</h3>

<p> This enum maps the Unicode character categories.
<p> The following characters are normative in Unicode:
<ul>
<li><tt>QChar::Mark_NonSpacing</tt> - Unicode class name Mn
<li><tt>QChar::Mark_SpacingCombining</tt> - Unicode class name Mc
<li><tt>QChar::Mark_Enclosing</tt> - Unicode class name Me
<li><tt>QChar::Number_DecimalDigit</tt> - Unicode class name Nd
<li><tt>QChar::Number_Letter</tt> - Unicode class name Nl
<li><tt>QChar::Number_Other</tt> - Unicode class name No
<li><tt>QChar::Separator_Space</tt> - Unicode class name Zs
<li><tt>QChar::Separator_Line</tt> - Unicode class name Zl
<li><tt>QChar::Separator_Paragraph</tt> - Unicode class name Zp
<li><tt>QChar::Other_Control</tt> - Unicode class name Cc
<li><tt>QChar::Other_Format</tt> - Unicode class name Cf
<li><tt>QChar::Other_Surrogate</tt> - Unicode class name Cs
<li><tt>QChar::Other_PrivateUse</tt> - Unicode class name Co
<li><tt>QChar::Other_NotAssigned</tt> - Unicode class name Cn
</ul><p> The following categories are informative in Unicode:
<ul>
<li><tt>QChar::Letter_Uppercase</tt> - Unicode class name Lu
<li><tt>QChar::Letter_Lowercase</tt> - Unicode class name Ll
<li><tt>QChar::Letter_Titlecase</tt> - Unicode class name Lt
<li><tt>QChar::Letter_Modifier</tt> - Unicode class name Lm
<li><tt>QChar::Letter_Other</tt> - Unicode class name Lo
<li><tt>QChar::Punctuation_Connector</tt> - Unicode class name Pc
<li><tt>QChar::Punctuation_Dash</tt> - Unicode class name Pd
<li><tt>QChar::Punctuation_Open</tt> - Unicode class name Ps
<li><tt>QChar::Punctuation_Close</tt> - Unicode class name Pe
<li><tt>QChar::Punctuation_InitialQuote</tt> - Unicode class name Pi
<li><tt>QChar::Punctuation_FinalQuote</tt> - Unicode class name Pf
<li><tt>QChar::Punctuation_Other</tt> - Unicode class name Po
<li><tt>QChar::Symbol_Math</tt> - Unicode class name Sm
<li><tt>QChar::Symbol_Currency</tt> - Unicode class name Sc
<li><tt>QChar::Symbol_Modifier</tt> - Unicode class name Sk
<li><tt>QChar::Symbol_Other</tt> - Unicode class name So
</ul><p> There are two categories that are specific to Qt:
<ul>
<li><tt>QChar::NoCategory</tt> - used when Qt is dazed and confused and cannot
make sense of anything.
<li><tt>QChar::Punctuation_Dask</tt> - old typo alias for Punctuation_Dash
</ul><p> 
<h3 class=fn><a name="CombiningClass-enum"></a>QChar::CombiningClass</h3>

<p> This enum type defines names for some of the Unicode combining
classes. See <a href="http://www.unicode.org/">the Unicode
    Standard</a> for a description of the values.

<h3 class=fn><a name="Decomposition-enum"></a>QChar::Decomposition</h3>

<p> This enum type defines the Unicode decomposition attributes. See
<a href="http://www.unicode.org/">the Unicode Standard</a> for a
description of the values.

<h3 class=fn><a name="Direction-enum"></a>QChar::Direction</h3>

<p> This enum type defines the Unicode direction attributes. See <a href="http://www.unicode.org/">the Unicode Standard</a> for a
description of the values.
<p> In order to conform to C/C++ naming conventions "Dir" is prepended
to the codes used in the Unicode Standard.

<h3 class=fn><a name="Joining-enum"></a>QChar::Joining</h3>

<p> This enum type defines the Unicode joining attributes. See <a href="http://www.unicode.org/">the Unicode Standard</a> for a
description of the values.

<hr><h2>Member Function Documentation</h2>
<h3 class=fn><a name="QChar"></a>QChar::QChar ()
</h3>

<p> Constructs a null QChar (one that <a href="#isNull">isNull</a>()).

<h3 class=fn><a name="QChar-2"></a>QChar::QChar ( char&nbsp;c )
</h3>

<p> Constructs a QChar corresponding to ASCII/Latin-1 character <em>c</em>.

<h3 class=fn><a name="QChar-3"></a>QChar::QChar ( uchar&nbsp;c )
</h3>

<p> Constructs a QChar corresponding to ASCII/Latin-1 character <em>c</em>.

<h3 class=fn><a name="QChar-4"></a>QChar::QChar ( uchar&nbsp;c, uchar&nbsp;r )
</h3>

<p> Constructs a QChar for Unicode cell <em>c</em> in row <em>r</em>.

<h3 class=fn><a name="QChar-5"></a>QChar::QChar ( const&nbsp;<a href="qchar.html">QChar</a>&nbsp;&amp;&nbsp;c )
</h3>

<p> Constructs a copy of <em>c</em>. This is a <a href="shclass.html#deep-copy">deep copy</a>, if such a
lightweight object can be said to have deep copies.

<h3 class=fn><a name="QChar-6"></a>QChar::QChar ( ushort&nbsp;rc )
</h3>

<p> Constructs a QChar for the character with Unicode code point <em>rc</em>.

<h3 class=fn><a name="QChar-7"></a>QChar::QChar ( short&nbsp;rc )
</h3>

<p> Constructs a QChar for the character with Unicode code point <em>rc</em>.

<h3 class=fn><a name="QChar-8"></a>QChar::QChar ( uint&nbsp;rc )
</h3>

<p> Constructs a QChar for the character with Unicode code point <em>rc</em>.

<h3 class=fn><a name="QChar-9"></a>QChar::QChar ( int&nbsp;rc )
</h3>

<p> Constructs a QChar for the character with Unicode code point <em>rc</em>.

<h3 class=fn><a href="qchar.html#Category-enum">Category</a> <a name="category"></a>QChar::category () const
</h3>
Returns the character category.
<p> <p>See also <a href="#Category-enum">Category</a>.

<h3 class=fn>uchar <a name="cell"></a>QChar::cell () const
</h3>

<p> Returns the cell (least significant byte) of the Unicode
character.

<h3 class=fn>unsigned char <a name="combiningClass"></a>QChar::combiningClass () const
</h3>
Returns the combining class for the character as defined in the
Unicode standard. This is mainly useful as a positioning hint for
marks attached to a base character.
<p> The Qt text rendering engine uses this information to correctly
position non spacing marks around a base character.

<h3 class=fn>const&nbsp;<a href="qstring.html">QString</a>&nbsp;&amp; <a name="decomposition"></a>QChar::decomposition () const
</h3><p><b>Warning:</b> This function is <i>not</i> <a href="threads.html#reentrant">reentrant</a>.</p>


<p> Decomposes a character into its parts. Returns <a href="qstring.html#QString-null">QString::null</a> if no
decomposition exists.

<h3 class=fn><a href="qchar.html#Decomposition-enum">Decomposition</a> <a name="decompositionTag"></a>QChar::decompositionTag () const
</h3>
Returns the tag defining the composition of the character. Returns
QChar::Single if no decomposition exists.

<h3 class=fn>int <a name="digitValue"></a>QChar::digitValue () const
</h3>
Returns the numeric value of the digit, or -1 if the character is
not a digit.

<h3 class=fn><a href="qchar.html#Direction-enum">Direction</a> <a name="direction"></a>QChar::direction () const
</h3>
Returns the character's direction.
<p> <p>See also <a href="#Direction-enum">Direction</a>.

<h3 class=fn>bool <a name="isDigit"></a>QChar::isDigit () const
</h3>
Returns TRUE if the character is a decimal digit
(Number_DecimalDigit); otherwise returns FALSE.

<h3 class=fn>bool <a name="isLetter"></a>QChar::isLetter () const
</h3>
Returns TRUE if the character is a letter (Letter_* categories);
otherwise returns FALSE.

<h3 class=fn>bool <a name="isLetterOrNumber"></a>QChar::isLetterOrNumber () const
</h3>
Returns TRUE if the character is a letter or number (Letter_* or
Number_* categories); otherwise returns FALSE.

<h3 class=fn>bool <a name="isMark"></a>QChar::isMark () const
</h3>
Returns TRUE if the character is a mark (Mark_* categories);
otherwise returns FALSE.

<h3 class=fn>bool <a name="isNull"></a>QChar::isNull () const
</h3>

<p> Returns TRUE if the character is the Unicode character 0x0000
(ASCII NUL); otherwise returns FALSE.

<h3 class=fn>bool <a name="isNumber"></a>QChar::isNumber () const
</h3>
Returns TRUE if the character is a number (of any sort - Number_*
categories); otherwise returns FALSE.
<p> <p>See also <a href="#isDigit">isDigit</a>().

<h3 class=fn>bool <a name="isPrint"></a>QChar::isPrint () const
</h3>
Returns TRUE if the character is a printable character; otherwise
returns FALSE. This is any character not of category Cc or Cn.
<p> Note that this gives no indication of whether the character is
available in a particular <a href="qfont.html">font</a>.

<h3 class=fn>bool <a name="isPunct"></a>QChar::isPunct () const
</h3>
Returns TRUE if the character is a punctuation mark (Punctuation_*
categories); otherwise returns FALSE.

<h3 class=fn>bool <a name="isSpace"></a>QChar::isSpace () const
</h3>
Returns TRUE if the character is a separator character
(Separator_* categories); otherwise returns FALSE.

<h3 class=fn>bool <a name="isSymbol"></a>QChar::isSymbol () const
</h3>
Returns TRUE if the character is a symbol (Symbol_* categories);
otherwise returns FALSE.

<h3 class=fn><a href="qchar.html#Joining-enum">Joining</a> <a name="joining"></a>QChar::joining () const
</h3>
<b>Warning:</b> This function is not supported (it may change to use
Unicode character classes).
<p> Returns information about the joining properties of the character
(needed for example, for Arabic).

<h3 class=fn>char <a name="latin1"></a>QChar::latin1 () const
</h3>

<p> Returns the Latin-1 value of this character, or 0 if it
cannot be represented in Latin-1.

<h3 class=fn><a href="qchar.html">QChar</a> <a name="lower"></a>QChar::lower () const
</h3>
Returns the lowercase equivalent if the character is uppercase;
otherwise returns the character itself.

<h3 class=fn>bool <a name="mirrored"></a>QChar::mirrored () const
</h3>
Returns TRUE if the character is a mirrored character (one that
should be reversed if the text direction is reversed); otherwise
returns FALSE.

<h3 class=fn><a href="qchar.html">QChar</a> <a name="mirroredChar"></a>QChar::mirroredChar () const
</h3>
Returns the mirrored character if this character is a mirrored
character, otherwise returns the character itself.

<h3 class=fn>bool <a name="networkOrdered"></a>QChar::networkOrdered ()<tt> [static]</tt>
</h3>

<p> <b>This function is obsolete.</b> It is provided to keep old source working. We strongly advise against using it in new code.
<p> Returns TRUE if this character is in network byte order (MSB
first); otherwise returns FALSE. This is platform dependent.

<h3 class=fn><a name="operator-char"></a>QChar::operator char () const
</h3>

<p> Returns the Latin-1 character equivalent to the QChar, or 0. This
is mainly useful for non-internationalized software.
<p> <p>See also <a href="#unicode">unicode</a>().

<h3 class=fn>uchar <a name="row"></a>QChar::row () const
</h3>

<p> Returns the row (most significant byte) of the Unicode character.

<h3 class=fn>ushort <a name="unicode"></a>QChar::unicode () const
</h3>

<p> Returns the numeric Unicode value equal to the QChar. Normally,
you should use QChar objects as they are equivalent, but for some
low-level tasks (e.g. indexing into an array of Unicode
information), this function is useful.

<h3 class=fn>ushort &amp; <a name="unicode-2"></a>QChar::unicode ()
</h3>

<p> This is an overloaded member function, provided for convenience. It behaves essentially like the above function.
<p> Returns a reference to the numeric Unicode value equal to the
QChar.

<h3 class=fn><a href="qchar.html">QChar</a> <a name="upper"></a>QChar::upper () const
</h3>
Returns the uppercase equivalent if the character is lowercase;
otherwise returns the character itself.

<hr><h2>Related Functions</h2>
<h3 class=fn>int <a name="operator!-eq"></a>operator!= ( <a href="qchar.html">QChar</a>&nbsp;c1, <a href="qchar.html">QChar</a>&nbsp;c2 )
</h3>

<p> 
<p> Returns TRUE if <em>c1</em> and <em>c2</em> are not the same Unicode
character; otherwise returns FALSE.

<h3 class=fn>int <a name="operator!-eq-2"></a>operator!= ( char&nbsp;ch, <a href="qchar.html">QChar</a>&nbsp;c )
</h3>

<p> This is an overloaded member function, provided for convenience. It behaves essentially like the above function.
<p> 
<p> Returns TRUE if <em>c</em> is not the ASCII/Latin-1 character <em>ch</em>;
otherwise returns FALSE.

<h3 class=fn>int <a name="operator!-eq-3"></a>operator!= ( <a href="qchar.html">QChar</a>&nbsp;c, char&nbsp;ch )
</h3>

<p> This is an overloaded member function, provided for convenience. It behaves essentially like the above function.
<p> 
<p> Returns TRUE if <em>c</em> is not the ASCII/Latin-1 character <em>ch</em>;
otherwise returns FALSE.

<h3 class=fn>int <a name="operator-lt"></a>operator&lt; ( <a href="qchar.html">QChar</a>&nbsp;c1, <a href="qchar.html">QChar</a>&nbsp;c2 )
</h3>

<p> 
<p> Returns TRUE if the numeric Unicode value of <em>c1</em> is less than
that of <em>c2</em>; otherwise returns FALSE.

<h3 class=fn>int <a name="operator-lt-2"></a>operator&lt; ( <a href="qchar.html">QChar</a>&nbsp;c, char&nbsp;ch )
</h3>

<p> This is an overloaded member function, provided for convenience. It behaves essentially like the above function.
<p> 
<p> Returns TRUE if the numeric Unicode value of <em>c</em> is less than that
of the ASCII/Latin-1 character <em>ch</em>; otherwise returns FALSE.

<h3 class=fn>int <a name="operator-lt-3"></a>operator&lt; ( char&nbsp;ch, <a href="qchar.html">QChar</a>&nbsp;c )
</h3>

<p> This is an overloaded member function, provided for convenience. It behaves essentially like the above function.
<p> 
<p> Returns TRUE if the numeric Unicode value of the ASCII/Latin-1
character <em>ch</em> is less than that of <em>c</em>; otherwise returns
FALSE.

<h3 class=fn>int <a name="operator-lt-eq"></a>operator&lt;= ( <a href="qchar.html">QChar</a>&nbsp;c1, <a href="qchar.html">QChar</a>&nbsp;c2 )
</h3>

<p> 
<p> Returns TRUE if the numeric Unicode value of <em>c1</em> is less than
that of <em>c2</em>, or they are the same Unicode character; otherwise
returns FALSE.

<h3 class=fn>int <a name="operator-lt-eq-2"></a>operator&lt;= ( <a href="qchar.html">QChar</a>&nbsp;c, char&nbsp;ch )
</h3>

<p> This is an overloaded member function, provided for convenience. It behaves essentially like the above function.
<p> 
<p> Returns TRUE if the numeric Unicode value of <em>c</em> is less than or
equal to that of the ASCII/Latin-1 character <em>ch</em>; otherwise
returns FALSE.

<h3 class=fn>int <a name="operator-lt-eq-3"></a>operator&lt;= ( char&nbsp;ch, <a href="qchar.html">QChar</a>&nbsp;c )
</h3>

<p> This is an overloaded member function, provided for convenience. It behaves essentially like the above function.
<p> 
<p> Returns TRUE if the numeric Unicode value of the ASCII/Latin-1
character <em>ch</em> is less than or equal to that of <em>c</em>; otherwise
returns FALSE.

<h3 class=fn>bool <a name="operator-eq-eq"></a>operator== ( <a href="qchar.html">QChar</a>&nbsp;c1, <a href="qchar.html">QChar</a>&nbsp;c2 )
</h3>

<p> 
<p> Returns TRUE if <em>c1</em> and <em>c2</em> are the same Unicode character;
otherwise returns FALSE.

<h3 class=fn>bool <a name="operator-eq-eq-2"></a>operator== ( char&nbsp;ch, <a href="qchar.html">QChar</a>&nbsp;c )
</h3>

<p> This is an overloaded member function, provided for convenience. It behaves essentially like the above function.
<p> 
<p> Returns TRUE if <em>c</em> is the ASCII/Latin-1 character <em>ch</em>;
otherwise returns FALSE.

<h3 class=fn>bool <a name="operator-eq-eq-3"></a>operator== ( <a href="qchar.html">QChar</a>&nbsp;c, char&nbsp;ch )
</h3>

<p> This is an overloaded member function, provided for convenience. It behaves essentially like the above function.
<p> 
<p> Returns TRUE if <em>c</em> is the ASCII/Latin-1 character <em>ch</em>;
otherwise returns FALSE.

<h3 class=fn>int <a name="operator-gt"></a>operator&gt; ( <a href="qchar.html">QChar</a>&nbsp;c1, <a href="qchar.html">QChar</a>&nbsp;c2 )
</h3>

<p> 
<p> Returns TRUE if the numeric Unicode value of <em>c1</em> is greater than
that of <em>c2</em>; otherwise returns FALSE.

<h3 class=fn>int <a name="operator-gt-2"></a>operator&gt; ( <a href="qchar.html">QChar</a>&nbsp;c, char&nbsp;ch )
</h3>

<p> This is an overloaded member function, provided for convenience. It behaves essentially like the above function.
<p> 
<p> Returns TRUE if the numeric Unicode value of <em>c</em> is greater than
that of the ASCII/Latin-1 character <em>ch</em>; otherwise returns FALSE.

<h3 class=fn>int <a name="operator-gt-3"></a>operator&gt; ( char&nbsp;ch, <a href="qchar.html">QChar</a>&nbsp;c )
</h3>

<p> This is an overloaded member function, provided for convenience. It behaves essentially like the above function.
<p> 
<p> Returns TRUE if the numeric Unicode value of the ASCII/Latin-1
character <em>ch</em> is greater than that of <em>c</em>; otherwise returns
FALSE.

<h3 class=fn>int <a name="operator-gt-eq"></a>operator&gt;= ( <a href="qchar.html">QChar</a>&nbsp;c1, <a href="qchar.html">QChar</a>&nbsp;c2 )
</h3>

<p> 
<p> Returns TRUE if the numeric Unicode value of <em>c1</em> is greater than
that of <em>c2</em>, or they are the same Unicode character; otherwise
returns FALSE.

<h3 class=fn>int <a name="operator-gt-eq-2"></a>operator&gt;= ( <a href="qchar.html">QChar</a>&nbsp;c, char&nbsp;ch )
</h3>

<p> This is an overloaded member function, provided for convenience. It behaves essentially like the above function.
<p> 
<p> Returns TRUE if the numeric Unicode value of <em>c</em> is greater than
or equal to that of the ASCII/Latin-1 character <em>ch</em>; otherwise
returns FALSE.

<h3 class=fn>int <a name="operator-gt-eq-3"></a>operator&gt;= ( char&nbsp;ch, <a href="qchar.html">QChar</a>&nbsp;c )
</h3>

<p> This is an overloaded member function, provided for convenience. It behaves essentially like the above function.
<p> 
<p> Returns TRUE if the numeric Unicode value of the ASCII/Latin-1
character <em>ch</em> is greater than or equal to that of <em>c</em>;
otherwise returns FALSE.

<!-- eof -->
<hr><p>
This file is part of the <a href="index.html">Qt toolkit</a>.
Copyright &copy; 1995-2007
<a href="http://www.trolltech.com/">Trolltech</a>. All Rights Reserved.<p><address><hr><div align=center>
<table width=100% cellspacing=0 border=0><tr>
<td>Copyright &copy; 2007
<a href="troll.html">Trolltech</a><td align=center><a href="trademarks.html">Trademarks</a>
<td align=right><div align=right>Qt 3.3.8</div>
</table></div></address></body>
</html>