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QChar(3qt)									       QChar(3qt)

NAME
       QChar - Lightweight Unicode character

SYNOPSIS
       Almost all the functions in this class are reentrant when Qt is built with thread support.
       The exception is decomposition(). </p>

       #include <qstring.h>

   Public Members
       QChar ()
       QChar ( char c )
       QChar ( uchar c )
       QChar ( uchar c, uchar r )
       QChar ( const QChar & c )
       QChar ( ushort rc )
       QChar ( short rc )
       QChar ( uint rc )
       QChar ( int rc )
       enum Category { 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 }
       enum Direction { DirL, DirR, DirEN, DirES, DirET, DirAN, DirCS, DirB, DirS, DirWS, DirON,
	   DirLRE, DirLRO, DirAL, DirRLE, DirRLO, DirPDF, DirNSM, DirBN }
       enum Decomposition { Single, Canonical, Font, NoBreak, Initial, Medial, Final, Isolated,
	   Circle, Super, Sub, Vertical, Wide, Narrow, Small, Square, Compat, Fraction }
       enum Joining { OtherJoining, Dual, Right, Center }
       enum CombiningClass { 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 }
       int digitValue () const
       QChar lower () const
       QChar upper () const
       Category category () const
       Direction direction () const
       Joining joining () const
       bool mirrored () const
       QChar mirroredChar () const
       const QString & decomposition () const
       Decomposition decompositionTag () const
       unsigned char combiningClass () const
       char latin1 () const
       ushort unicode () const
       ushort & unicode ()
       operator char () const
       bool isNull () const
       bool isPrint () const
       bool isPunct () const
       bool isSpace () const
       bool isMark () const
       bool isLetter () const
       bool isNumber () const
       bool isLetterOrNumber () const
       bool isDigit () const
       bool isSymbol () const
       uchar cell () const
       uchar row () const

   Static Public Members
       bool networkOrdered ()  (obsolete)

RELATED FUNCTION DOCUMENTATION
       bool operator== ( QChar c1, QChar c2 )
       bool operator== ( char ch, QChar c )
       bool operator== ( QChar c, char ch )
       int operator!= ( QChar c1, QChar c2 )
       int operator!= ( char ch, QChar c )
       int operator!= ( QChar c, char ch )
       int operator<= ( QChar c1, QChar c2 )
       int operator<= ( QChar c, char ch )
       int operator<= ( char ch, QChar c )
       int operator>= ( QChar c1, QChar c2 )
       int operator>= ( QChar c, char ch )
       int operator>= ( char ch, QChar c )
       int operator< ( QChar c1, QChar c2 )
       int operator< ( QChar c, char ch )
       int operator< ( char ch, QChar c )
       int operator> ( QChar c1, QChar c2 )
       int operator> ( QChar c, char ch )
       int operator> ( char ch, QChar c )

DESCRIPTION
       The QChar class provides a lightweight Unicode character.

       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.)

       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.

       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 isNull()
       (returns TRUE if the character is U+0000), isPrint() (TRUE if the character is any sort of
       printable character, including whitespace), isPunct() (any sort of punctation), isMark()
       (Unicode Mark), isLetter (a letter), isNumber() (any sort of numeric character),
       isLetterOrNumber(), and isDigit() (decimal digits). All of these are wrappers around
       category() which return the Unicode-defined category of each character.

       QChar further provides direction(), which indicates the "natural" writing direction of
       this character. The joining() function indicates how the character joins with its
       neighbors (needed mostly for Arabic) and finally mirrored(), which indicates whether the
       character needs to be mirrored when it is printed in its" unnatural" writing direction.

       Composed Unicode characters (like &aring;) can be converted to decomposed Unicode ("a"
       followed by "ring above") by using decomposition().

       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: operator==() and friends will do comparison
       based purely on the numeric Unicode value (code point) of the characters, and upper() and
       lower() 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 QString::localeAwareCompare() though.)

       The conversion functions include unicode() (to a scalar), latin1() (to scalar, but
       converts all non-Latin-1 characters to 0), row() (gives the Unicode row), cell() (gives
       the Unicode cell), digitValue() (gives the integer value of any of the numerous digit
       characters), and a host of constructors.

       More information can be found in the document About Unicode.

       See also QString, QCharRef, and Text Related Classes.

   Member Type Documentation
QChar::Category
       This enum maps the Unicode character categories.

       The following characters are normative in Unicode:

       QChar::Mark_NonSpacing - Unicode class name Mn

       QChar::Mark_SpacingCombining - Unicode class name Mc

       QChar::Mark_Enclosing - Unicode class name Me

       QChar::Number_DecimalDigit - Unicode class name Nd

       QChar::Number_Letter - Unicode class name Nl

       QChar::Number_Other - Unicode class name No

       QChar::Separator_Space - Unicode class name Zs

       QChar::Separator_Line - Unicode class name Zl

       QChar::Separator_Paragraph - Unicode class name Zp

       QChar::Other_Control - Unicode class name Cc

       QChar::Other_Format - Unicode class name Cf

       QChar::Other_Surrogate - Unicode class name Cs

       QChar::Other_PrivateUse - Unicode class name Co

       QChar::Other_NotAssigned - Unicode class name Cn

       The following categories are informative in Unicode:

       QChar::Letter_Uppercase - Unicode class name Lu

       QChar::Letter_Lowercase - Unicode class name Ll

       QChar::Letter_Titlecase - Unicode class name Lt

       QChar::Letter_Modifier - Unicode class name Lm

       QChar::Letter_Other - Unicode class name Lo

       QChar::Punctuation_Connector - Unicode class name Pc

       QChar::Punctuation_Dash - Unicode class name Pd

       QChar::Punctuation_Open - Unicode class name Ps

       QChar::Punctuation_Close - Unicode class name Pe

       QChar::Punctuation_InitialQuote - Unicode class name Pi

       QChar::Punctuation_FinalQuote - Unicode class name Pf

       QChar::Punctuation_Other - Unicode class name Po

       QChar::Symbol_Math - Unicode class name Sm

       QChar::Symbol_Currency - Unicode class name Sc

       QChar::Symbol_Modifier - Unicode class name Sk

       QChar::Symbol_Other - Unicode class name So

       There are two categories that are specific to Qt:

       QChar::NoCategory - used when Qt is dazed and confused and cannot make sense of anything.

       QChar::Punctuation_Dask - old typo alias for Punctuation_Dash

QChar::CombiningClass
       This enum type defines names for some of the Unicode combining classes. See the Unicode
       Standard for a description of the values.

QChar::Decomposition
       This enum type defines the Unicode decomposition attributes. See the Unicode Standard for
       a description of the values.

QChar::Direction
       This enum type defines the Unicode direction attributes. See the Unicode Standard for a
       description of the values.

       In order to conform to C/C++ naming conventions "Dir" is prepended to the codes used in
       the Unicode Standard.

QChar::Joining
       This enum type defines the Unicode joining attributes. See the Unicode Standard for a
       description of the values.

MEMBER FUNCTION DOCUMENTATION
QChar::QChar ()
       Constructs a null QChar (one that isNull()).

QChar::QChar ( char c )
       Constructs a QChar corresponding to ASCII/Latin-1 character c.

QChar::QChar ( uchar c )
       Constructs a QChar corresponding to ASCII/Latin-1 character c.

QChar::QChar ( uchar c, uchar r )
       Constructs a QChar for Unicode cell c in row r.

QChar::QChar ( const QChar & c )
       Constructs a copy of c. This is a deep copy, if such a lightweight object can be said to
       have deep copies.

QChar::QChar ( ushort rc )
       Constructs a QChar for the character with Unicode code point rc.

QChar::QChar ( short rc )
       Constructs a QChar for the character with Unicode code point rc.

QChar::QChar ( uint rc )
       Constructs a QChar for the character with Unicode code point rc.

QChar::QChar ( int rc )
       Constructs a QChar for the character with Unicode code point rc.

Category QChar::category () const
       Returns the character category.

       See also Category.

uchar QChar::cell () const
       Returns the cell (least significant byte) of the Unicode character.

unsigned char QChar::combiningClass () const
       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.

       The Qt text rendering engine uses this information to correctly position non spacing marks
       around a base character.

const QString &; QChar::decomposition () const
       Warning: This function is not reentrant.</p>

       Decomposes a character into its parts. Returns QString::null if no decomposition exists.

Decomposition QChar::decompositionTag () const
       Returns the tag defining the composition of the character. Returns QChar::Single if no
       decomposition exists.

int QChar::digitValue () const
       Returns the numeric value of the digit, or -1 if the character is not a digit.

Direction QChar::direction () const
       Returns the character's direction.

       See also Direction.

bool QChar::isDigit () const
       Returns TRUE if the character is a decimal digit (Number_DecimalDigit); otherwise returns
       FALSE.

bool QChar::isLetter () const
       Returns TRUE if the character is a letter (Letter_* categories); otherwise returns FALSE.

bool QChar::isLetterOrNumber () const
       Returns TRUE if the character is a letter or number (Letter_* or Number_* categories);
       otherwise returns FALSE.

bool QChar::isMark () const
       Returns TRUE if the character is a mark (Mark_* categories); otherwise returns FALSE.

bool QChar::isNull () const
       Returns TRUE if the character is the Unicode character 0x0000 (ASCII NUL); otherwise
       returns FALSE.

bool QChar::isNumber () const
       Returns TRUE if the character is a number (of any sort - Number_* categories); otherwise
       returns FALSE.

       See also isDigit().

bool QChar::isPrint () const
       Returns TRUE if the character is a printable character; otherwise returns FALSE. This is
       any character not of category Cc or Cn.

       Note that this gives no indication of whether the character is available in a particular
       font.

bool QChar::isPunct () const
       Returns TRUE if the character is a punctuation mark (Punctuation_* categories); otherwise
       returns FALSE.

bool QChar::isSpace () const
       Returns TRUE if the character is a separator character (Separator_* categories); otherwise
       returns FALSE.

bool QChar::isSymbol () const
       Returns TRUE if the character is a symbol (Symbol_* categories); otherwise returns FALSE.

Joining QChar::joining () const
       Warning: This function is not supported (it may change to use Unicode character classes).

       Returns information about the joining properties of the character (needed for example, for
       Arabic).

char QChar::latin1 () const
       Returns the Latin-1 value of this character, or 0 if it cannot be represented in Latin-1.

QChar QChar::lower () const
       Returns the lowercase equivalent if the character is uppercase; otherwise returns the
       character itself.

bool QChar::mirrored () const
       Returns TRUE if the character is a mirrored character (one that should be reversed if the
       text direction is reversed); otherwise returns FALSE.

QChar QChar::mirroredChar () const
       Returns the mirrored character if this character is a mirrored character, otherwise
       returns the character itself.

bool QChar::networkOrdered () [static]
       This function is obsolete. It is provided to keep old source working. We strongly advise
       against using it in new code.

       Returns TRUE if this character is in network byte order (MSB first); otherwise returns
       FALSE. This is platform dependent.

QChar::operator char () const
       Returns the Latin-1 character equivalent to the QChar, or 0. This is mainly useful for
       non-internationalized software.

       See also unicode().

uchar QChar::row () const
       Returns the row (most significant byte) of the Unicode character.

ushort QChar::unicode () const
       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.

ushort &; QChar::unicode ()
       This is an overloaded member function, provided for convenience. It behaves essentially
       like the above function.

       Returns a reference to the numeric Unicode value equal to the QChar.

QChar QChar::upper () const
       Returns the uppercase equivalent if the character is lowercase; otherwise returns the
       character itself.

RELATED FUNCTION DOCUMENTATION
int operator!= ( QChar c1, QChar c2 )
       Returns TRUE if c1 and c2 are not the same Unicode character; otherwise returns FALSE.

int operator!= ( char ch, QChar c )
       This is an overloaded member function, provided for convenience. It behaves essentially
       like the above function.

       Returns TRUE if c is not the ASCII/Latin-1 character ch; otherwise returns FALSE.

int operator!= ( QChar c, char ch )
       This is an overloaded member function, provided for convenience. It behaves essentially
       like the above function.

       Returns TRUE if c is not the ASCII/Latin-1 character ch; otherwise returns FALSE.

int operator<; ( QChar c1, QChar c2 )
       Returns TRUE if the numeric Unicode value of c1 is less than that of c2; otherwise returns
       FALSE.

int operator<; ( QChar c, char ch )
       This is an overloaded member function, provided for convenience. It behaves essentially
       like the above function.

       Returns TRUE if the numeric Unicode value of c is less than that of the ASCII/Latin-1
       character ch; otherwise returns FALSE.

int operator<; ( char ch, QChar c )
       This is an overloaded member function, provided for convenience. It behaves essentially
       like the above function.

       Returns TRUE if the numeric Unicode value of the ASCII/Latin-1 character ch is less than
       that of c; otherwise returns FALSE.

int operator<;= ( QChar c1, QChar c2 )
       Returns TRUE if the numeric Unicode value of c1 is less than that of c2, or they are the
       same Unicode character; otherwise returns FALSE.

int operator<;= ( QChar c, char ch )
       This is an overloaded member function, provided for convenience. It behaves essentially
       like the above function.

       Returns TRUE if the numeric Unicode value of c is less than or equal to that of the
       ASCII/Latin-1 character ch; otherwise returns FALSE.

int operator<;= ( char ch, QChar c )
       This is an overloaded member function, provided for convenience. It behaves essentially
       like the above function.

       Returns TRUE if the numeric Unicode value of the ASCII/Latin-1 character ch is less than
       or equal to that of c; otherwise returns FALSE.

bool operator== ( QChar c1, QChar c2 )
       Returns TRUE if c1 and c2 are the same Unicode character; otherwise returns FALSE.

bool operator== ( char ch, QChar c )
       This is an overloaded member function, provided for convenience. It behaves essentially
       like the above function.

       Returns TRUE if c is the ASCII/Latin-1 character ch; otherwise returns FALSE.

bool operator== ( QChar c, char ch )
       This is an overloaded member function, provided for convenience. It behaves essentially
       like the above function.

       Returns TRUE if c is the ASCII/Latin-1 character ch; otherwise returns FALSE.

int operator>; ( QChar c1, QChar c2 )
       Returns TRUE if the numeric Unicode value of c1 is greater than that of c2; otherwise
       returns FALSE.

int operator>; ( QChar c, char ch )
       This is an overloaded member function, provided for convenience. It behaves essentially
       like the above function.

       Returns TRUE if the numeric Unicode value of c is greater than that of the ASCII/Latin-1
       character ch; otherwise returns FALSE.

int operator>; ( char ch, QChar c )
       This is an overloaded member function, provided for convenience. It behaves essentially
       like the above function.

       Returns TRUE if the numeric Unicode value of the ASCII/Latin-1 character ch is greater
       than that of c; otherwise returns FALSE.

int operator>;= ( QChar c1, QChar c2 )
       Returns TRUE if the numeric Unicode value of c1 is greater than that of c2, or they are
       the same Unicode character; otherwise returns FALSE.

int operator>;= ( QChar c, char ch )
       This is an overloaded member function, provided for convenience. It behaves essentially
       like the above function.

       Returns TRUE if the numeric Unicode value of c is greater than or equal to that of the
       ASCII/Latin-1 character ch; otherwise returns FALSE.

int operator>;= ( char ch, QChar c )
       This is an overloaded member function, provided for convenience. It behaves essentially
       like the above function.

       Returns TRUE if the numeric Unicode value of the ASCII/Latin-1 character ch is greater
       than or equal to that of c; otherwise returns FALSE.

SEE ALSO
       http://doc.trolltech.com/qchar.html http://www.trolltech.com/faq/tech.html

COPYRIGHT
       Copyright 1992-2007 Trolltech ASA, http://www.trolltech.com.  See the license file
       included in the distribution for a complete license statement.

AUTHOR
       Generated automatically from the source code.

BUGS
       If you find a bug in Qt, please report it as described in
       http://doc.trolltech.com/bughowto.html.	Good bug reports help us to help you. Thank you.

       The definitive Qt documentation is provided in HTML format; it is located at
       $QTDIR/doc/html and can be read using Qt Assistant or with a web browser. This man page is
       provided as a convenience for those users who prefer man pages, although this format is
       not officially supported by Trolltech.

       If you find errors in this manual page, please report them to qt-bugs@trolltech.com.
       Please include the name of the manual page (qchar.3qt) and the Qt version (3.3.8).

Trolltech AS				 2 February 2007			       QChar(3qt)
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