QChar Class Reference

The QChar class provides a 16-bit Unicode character. More...

 #include <QChar>

Note: All functions in this class are reentrant.

Public Types

enum	Category { Mark_NonSpacing, Mark_SpacingCombining, Mark_Enclosing, Number_DecimalDigit, ..., NoCategory }
enum	Decomposition { NoDecomposition, Canonical, Circle, Compat, ..., Wide }
enum	Direction { DirAL, DirAN, DirB, DirBN, ..., DirWS }
enum	Joining { Center, Dual, OtherJoining, Right }
enum	SpecialCharacter { Null, Nbsp, ReplacementCharacter, ObjectReplacementCharacter, ..., LineSeparator }
enum	UnicodeVersion { Unicode_1_1, Unicode_2_0, Unicode_2_1_2, Unicode_3_0, ..., Unicode_Unassigned }

Public Functions

	QChar ()
	QChar ( char ch )
	QChar ( uchar ch )
	QChar ( QLatin1Char ch )
	QChar ( uchar cell, uchar row )
	QChar ( ushort code )
	QChar ( short code )
	QChar ( uint code )
	QChar ( int code )
	QChar ( SpecialCharacter ch )
Category	category () const
uchar	cell () const
unsigned char	combiningClass () const
QString	decomposition () const
Decomposition	decompositionTag () const
int	digitValue () const
Direction	direction () const
bool	hasMirrored () const
bool	isDigit () const
bool	isHighSurrogate () const
bool	isLetter () const
bool	isLetterOrNumber () const
bool	isLowSurrogate () const
bool	isLower () const
bool	isMark () const
bool	isNull () const
bool	isNumber () const
bool	isPrint () const
bool	isPunct () const
bool	isSpace () const
bool	isSymbol () const
bool	isTitleCase () const
bool	isUpper () const
Joining	joining () const
QChar	mirroredChar () const
uchar	row () const
char	toAscii () const
QChar	toCaseFolded () const
char	toLatin1 () const
QChar	toLower () const
QChar	toTitleCase () const
QChar	toUpper () const
ushort &	unicode ()
ushort	unicode () const
UnicodeVersion	unicodeVersion () const

Static Public Members

Category	category ( uint ucs4 )
Category	category ( ushort ucs2 )
unsigned char	combiningClass ( uint ucs4 )
unsigned char	combiningClass ( ushort ucs2 )
QString	decomposition ( uint ucs4 )
Decomposition	decompositionTag ( uint ucs4 )
int	digitValue ( ushort ucs2 )
int	digitValue ( uint ucs4 )
Direction	direction ( uint ucs4 )
Direction	direction ( ushort ucs2 )
QChar	fromAscii ( char c )
QChar	fromLatin1 ( char c )
ushort	highSurrogate ( uint ucs4 )
bool	isHighSurrogate ( uint ucs4 )
bool	isLowSurrogate ( uint ucs4 )
Joining	joining ( uint ucs4 )
Joining	joining ( ushort ucs2 )
ushort	lowSurrogate ( uint ucs4 )
uint	mirroredChar ( uint ucs4 )
ushort	mirroredChar ( ushort ucs2 )
bool	requiresSurrogates ( uint ucs4 )
uint	surrogateToUcs4 ( ushort high, ushort low )
uint	surrogateToUcs4 ( QChar high, QChar low )
uint	toCaseFolded ( uint ucs4 )
ushort	toCaseFolded ( ushort ucs2 )
uint	toLower ( uint ucs4 )
ushort	toLower ( ushort ucs2 )
uint	toTitleCase ( uint ucs4 )
ushort	toTitleCase ( ushort ucs2 )
uint	toUpper ( uint ucs4 )
ushort	toUpper ( ushort ucs2 )
UnicodeVersion	unicodeVersion ( uint ucs4 )
UnicodeVersion	unicodeVersion ( ushort ucs2 )

Related Non-Members

bool	operator!= ( QChar c1, QChar c2 )
bool	operator< ( QChar c1, QChar c2 )
QDataStream &	operator<< ( QDataStream & out, const QChar & chr )
bool	operator<= ( QChar c1, QChar c2 )
bool	operator== ( QChar c1, QChar c2 )
bool	operator> ( QChar c1, QChar c2 )
bool	operator>= ( QChar c1, QChar c2 )
QDataStream &	operator>> ( QDataStream & in, QChar & chr )

Detailed Description

The QChar class provides a 16-bit Unicode character.

In Qt, Unicode characters are 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 unsigned short.

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 the standard C++ header <cctype> (formerly <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 '\0'), 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, not just 0-9), isLetterOrNumber(), and isDigit() (decimal digits). All of these are wrappers around category() which return the Unicode-defined category of each character.

QChar also 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 hasMirrored(), which indicates whether the character needs to be mirrored when it is printed in its "unnatural" writing direction.

Composed Unicode characters (like å) 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. operator==() and friends will do comparison based purely on the numeric Unicode value (code point) of the characters, and toUpper() and toLower() will do case changes when the character has a well-defined uppercase/lowercase equivalent. For locale-dependent comparisons, use QString::localeAwareCompare().

The conversion functions include unicode() (to a scalar), toLatin1() (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.

QChar provides constructors and cast operators that make it easy to convert to and from traditional 8-bit chars. If you defined QT_NO_CAST_FROM_ASCII and QT_NO_CAST_TO_ASCII, as explained in the QString documentation, you will need to explicitly call fromAscii() or fromLatin1(), or use QLatin1Char, to construct a QChar from an 8-bit char, and you will need to call toAscii() or toLatin1() to get the 8-bit value back.

See also QString, Unicode, and QLatin1Char.

Member Type Documentation

enum QChar::Category

This enum maps the Unicode character categories.

The following characters are normative in Unicode:

Constant	Value	Description
`QChar::Mark_NonSpacing`	`1`	Unicode class name Mn
`QChar::Mark_SpacingCombining`	`2`	Unicode class name Mc
`QChar::Mark_Enclosing`	`3`	Unicode class name Me
`QChar::Number_DecimalDigit`	`4`	Unicode class name Nd
`QChar::Number_Letter`	`5`	Unicode class name Nl
`QChar::Number_Other`	`6`	Unicode class name No
`QChar::Separator_Space`	`7`	Unicode class name Zs
`QChar::Separator_Line`	`8`	Unicode class name Zl
`QChar::Separator_Paragraph`	`9`	Unicode class name Zp
`QChar::Other_Control`	`10`	Unicode class name Cc
`QChar::Other_Format`	`11`	Unicode class name Cf
`QChar::Other_Surrogate`	`12`	Unicode class name Cs
`QChar::Other_PrivateUse`	`13`	Unicode class name Co
`QChar::Other_NotAssigned`	`14`	Unicode class name Cn

The following categories are informative in Unicode:

Constant	Value	Description
`QChar::Letter_Uppercase`	`15`	Unicode class name Lu
`QChar::Letter_Lowercase`	`16`	Unicode class name Ll
`QChar::Letter_Titlecase`	`17`	Unicode class name Lt
`QChar::Letter_Modifier`	`18`	Unicode class name Lm
`QChar::Letter_Other`	`19`	Unicode class name Lo
`QChar::Punctuation_Connector`	`20`	Unicode class name Pc
`QChar::Punctuation_Dash`	`21`	Unicode class name Pd
`QChar::Punctuation_Open`	`22`	Unicode class name Ps
`QChar::Punctuation_Close`	`23`	Unicode class name Pe
`QChar::Punctuation_InitialQuote`	`24`	Unicode class name Pi
`QChar::Punctuation_FinalQuote`	`25`	Unicode class name Pf
`QChar::Punctuation_Other`	`26`	Unicode class name Po
`QChar::Symbol_Math`	`27`	Unicode class name Sm
`QChar::Symbol_Currency`	`28`	Unicode class name Sc
`QChar::Symbol_Modifier`	`29`	Unicode class name Sk
`QChar::Symbol_Other`	`30`	Unicode class name So
`QChar::NoCategory`	`0`	Qt cannot find an appropriate category for the character.

enum QChar::Decomposition

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

Constant	Value
`QChar::NoDecomposition`	`0`
`QChar::Canonical`	`1`
`QChar::Circle`	`8`
`QChar::Compat`	`16`
`QChar::Final`	`6`
`QChar::Font`	`2`
`QChar::Fraction`	`17`
`QChar::Initial`	`4`
`QChar::Isolated`	`7`
`QChar::Medial`	`5`
`QChar::Narrow`	`13`
`QChar::NoBreak`	`3`
`QChar::Small`	`14`
`QChar::Square`	`15`
`QChar::Sub`	`10`
`QChar::Super`	`9`
`QChar::Vertical`	`11`
`QChar::Wide`	`12`

enum 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.

Constant	Value
`QChar::DirAL`	`13`
`QChar::DirAN`	`5`
`QChar::DirB`	`7`
`QChar::DirBN`	`18`
`QChar::DirCS`	`6`
`QChar::DirEN`	`2`
`QChar::DirES`	`3`
`QChar::DirET`	`4`
`QChar::DirL`	`0`
`QChar::DirLRE`	`11`
`QChar::DirLRO`	`12`
`QChar::DirNSM`	`17`
`QChar::DirON`	`10`
`QChar::DirPDF`	`16`
`QChar::DirR`	`1`
`QChar::DirRLE`	`14`
`QChar::DirRLO`	`15`
`QChar::DirS`	`8`
`QChar::DirWS`	`9`

enum QChar::Joining

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

Constant	Value
`QChar::Center`	`3`
`QChar::Dual`	`1`
`QChar::OtherJoining`	`0`
`QChar::Right`	`2`

enum QChar::SpecialCharacter

Constant	Value	Description
`QChar::Null`	`0x0000`	A QChar with this value isNull().
`QChar::Nbsp`	`0x00a0`	Non-breaking space.
`QChar::ReplacementCharacter`	`0xfffd`	The character shown when a font has no glyph for a certain codepoint. A special question mark character is often used. Codecs use this codepoint when input data cannot be represented in Unicode.
`QChar::ObjectReplacementCharacter`	`0xfffc`	Used to represent an object such as an image when such objects cannot be presented.
`QChar::ByteOrderMark`	`0xfeff`
`QChar::ByteOrderSwapped`	`0xfffe`
`QChar::ParagraphSeparator`	`0x2029`
`QChar::LineSeparator`	`0x2028`

enum QChar::UnicodeVersion

Specifies which version of the Unicode standard introduced a certain character.

Constant	Value	Description
`QChar::Unicode_1_1`	`1`	Version 1.1
`QChar::Unicode_2_0`	`2`	Version 2.0
`QChar::Unicode_2_1_2`	`3`	Version 2.1.2
`QChar::Unicode_3_0`	`4`	Version 3.0
`QChar::Unicode_3_1`	`5`	Version 3.1
`QChar::Unicode_3_2`	`6`	Version 3.2
`QChar::Unicode_4_0`	`7`	Version 4.0
`QChar::Unicode_4_1`	`8`	Version 4.1
`QChar::Unicode_5_0`	`9`	Version 5.0
`QChar::Unicode_Unassigned`	`0`	The value is not assigned to any character in version 5.0 of Unicode.

Member Function Documentation

QChar::QChar ()

Constructs a null QChar ('\0').

QChar::QChar ( char ch )

Constructs a QChar corresponding to ASCII/Latin-1 character ch.

QChar::QChar ( uchar ch )

Constructs a QChar corresponding to ASCII/Latin-1 character ch.

QChar::QChar ( QLatin1Char ch )

Constructs a QChar corresponding to ASCII/Latin-1 character ch.

QChar::QChar ( uchar cell, uchar row )

Constructs a QChar for Unicode cell cell in row row.

QChar::QChar ( ushort code )

Constructs a QChar for the character with Unicode code point code.

QChar::QChar ( short code )

Constructs a QChar for the character with Unicode code point code.

QChar::QChar ( uint code )

Constructs a QChar for the character with Unicode code point code.

QChar::QChar ( int code )

Constructs a QChar for the character with Unicode code point code.

QChar::QChar ( SpecialCharacter ch )

Constructs a QChar for the predefined character value ch.

Category QChar::category () const

Returns the character's category.

Category QChar::category ( uint ucs4 ) `[static]`

This is an overloaded function.

Returns the category of the UCS-4-encoded character specified by ucs4.

This function was introduced in Qt 4.3.

Category QChar::category ( ushort ucs2 ) `[static]`

This is an overloaded function.

Returns the category of the UCS-2-encoded character specified by ucs2.

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.

unsigned char QChar::combiningClass ( uint ucs4 ) `[static]`

This is an overloaded function.

Returns the combining class for the UCS-4-encoded character specified by ucs4, as defined in the Unicode standard.

unsigned char QChar::combiningClass ( ushort ucs2 ) `[static]`

This is an overloaded function.

Returns the combining class for the UCS-2-encoded character specified by ucs2, as defined in the Unicode standard.

QString QChar::decomposition () const

Decomposes a character into its parts. Returns an empty string if no decomposition exists.

QString QChar::decomposition ( uint ucs4 ) `[static]`

This is an overloaded function.

Decomposes the UCS-4-encoded character specified by ucs4 into its constituent parts. Returns an empty string if no decomposition exists.

Decomposition QChar::decompositionTag () const

Returns the tag defining the composition of the character. Returns QChar::Single if no decomposition exists.

Decomposition QChar::decompositionTag ( uint ucs4 ) `[static]`

This is an overloaded function.

Returns the tag defining the composition of the UCS-4-encoded character specified by ucs4. 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.

int QChar::digitValue ( ushort ucs2 ) `[static]`

This is an overloaded function.

Returns the numeric value of the digit, specified by the UCS-2-encoded character, ucs2, or -1 if the character is not a digit.

int QChar::digitValue ( uint ucs4 ) `[static]`

This is an overloaded function.

Returns the numeric value of the digit specified by the UCS-4-encoded character, ucs4, or -1 if the character is not a digit.

Direction QChar::direction () const

Returns the character's direction.

Direction QChar::direction ( uint ucs4 ) `[static]`

This is an overloaded function.

Returns the direction of the UCS-4-encoded character specified by ucs4.

Direction QChar::direction ( ushort ucs2 ) `[static]`

This is an overloaded function.

Returns the direction of the UCS-2-encoded character specified by ucs2.

QChar QChar::fromAscii ( char c ) `[static]`

Converts the ASCII character c to its equivalent QChar. This is mainly useful for non-internationalized software.

An alternative is to use QLatin1Char.

See also fromLatin1(), unicode(), and QTextCodec::codecForCStrings().

QChar QChar::fromLatin1 ( char c ) `[static]`

Converts the Latin-1 character c to its equivalent QChar. This is mainly useful for non-internationalized software.

See also fromAscii(), unicode(), and QTextCodec::codecForCStrings().

bool QChar::hasMirrored () const

Returns true if the character should be reversed if the text direction is reversed; otherwise returns false.

Same as (ch.mirroredChar() != ch).

ushort QChar::highSurrogate ( uint ucs4 ) `[static]`

Returns the high surrogate value of a ucs4 code point. The returned result is undefined if ucs4 is smaller than 0x10000.

bool QChar::isDigit () const

Returns true if the character is a decimal digit (Number_DecimalDigit); otherwise returns false.

bool QChar::isHighSurrogate () const

Returns true if the QChar is the high part of a utf16 surrogate (ie. if its code point is between 0xd800 and 0xdbff, inclusive).

bool QChar::isHighSurrogate ( uint ucs4 ) `[static]`

Returns true if the UCS-4-encoded character specified by ucs4 is the high part of a utf16 surrogate (ie. if its code point is between 0xd800 and 0xdbff, inclusive).

This function was introduced in Qt 4.7.

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::isLowSurrogate () const

Returns true if the QChar is the low part of a utf16 surrogate (ie. if its code point is between 0xdc00 and 0xdfff, inclusive).

bool QChar::isLowSurrogate ( uint ucs4 ) `[static]`

Returns true if the UCS-4-encoded character specified by ucs4 is the high part of a utf16 surrogate (ie. if its code point is between 0xdc00 and 0xdfff, inclusive).

This function was introduced in Qt 4.7.

bool QChar::isLower () const

Returns true if the character is a lowercase letter, i.e. category() is Letter_Lowercase.

See also isUpper(), toLower(), and toUpper().

bool QChar::isMark () const

Returns true if the character is a mark (Mark_* categories); otherwise returns false.

See QChar::Category for more information regarding marks.

bool QChar::isNull () const

Returns true if the character is the Unicode character 0x0000 ('\0'); otherwise returns false.

bool QChar::isNumber () const

Returns true if the character is a number (Number_* categories, not just 0-9); otherwise returns false.

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.

bool QChar::isTitleCase () const

Returns true if the character is a titlecase letter, i.e. category() is Letter_Titlecase.

This function was introduced in Qt 4.3.

See also isLower(), toUpper(), toLower(), and toTitleCase().

bool QChar::isUpper () const

Returns true if the character is an uppercase letter, i.e. category() is Letter_Uppercase.

See also isLower(), toUpper(), and toLower().

Joining QChar::joining () const

Returns information about the joining properties of the character (needed for certain languages such as Arabic).

Joining QChar::joining ( uint ucs4 ) `[static]`

This is an overloaded function.

Returns information about the joining properties of the UCS-4-encoded character specified by ucs4 (needed for certain languages such as Arabic).

Joining QChar::joining ( ushort ucs2 ) `[static]`

This is an overloaded function.

Returns information about the joining properties of the UCS-2-encoded character specified by ucs2 (needed for certain languages such as Arabic).

ushort QChar::lowSurrogate ( uint ucs4 ) `[static]`

Returns the low surrogate value of a ucs4 code point. The returned result is undefined if ucs4 is smaller than 0x10000.

QChar QChar::mirroredChar () const

Returns the mirrored character if this character is a mirrored character; otherwise returns the character itself.

uint QChar::mirroredChar ( uint ucs4 ) `[static]`

This is an overloaded function.

Returns the mirrored character if the UCS-4-encoded character specified by ucs4 is a mirrored character; otherwise returns the character itself.

ushort QChar::mirroredChar ( ushort ucs2 ) `[static]`

This is an overloaded function.

Returns the mirrored character if the UCS-2-encoded character specified by ucs2 is a mirrored character; otherwise returns the character itself.

bool QChar::requiresSurrogates ( uint ucs4 ) `[static]`

Returns true if the UCS-4-encoded character specified by ucs4 can be splited to the high and low parts of a utf16 surrogate (ie. if its code point is greater than or equals to 0x10000).

This function was introduced in Qt 4.7.

uchar QChar::row () const

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

uint QChar::surrogateToUcs4 ( ushort high, ushort low ) `[static]`

Converts a UTF16 surrogate pair with the given high and low values to its UCS-4 code point.

uint QChar::surrogateToUcs4 ( QChar high, QChar low ) `[static]`

Converts a utf16 surrogate pair (high, low) to its ucs4 code point.

char QChar::toAscii () const

Returns the character value of the QChar obtained using the current codec used to read C strings, or 0 if the character is not representable using this codec. The default codec handles Latin-1 encoded text, but this can be changed to assist developers writing source code using other encodings.

The main purpose of this function is to preserve ASCII characters used in C strings. This is mainly useful for developers of non-internationalized software.

See also toLatin1(), unicode(), and QTextCodec::codecForCStrings().

QChar QChar::toCaseFolded () const

Returns the case folded equivalent of the character. For most Unicode characters this is the same as toLowerCase().

uint QChar::toCaseFolded ( uint ucs4 ) `[static]`

This is an overloaded function.

Returns the case folded equivalent of the UCS-4-encoded character specified by ucs4. For most Unicode characters this is the same as toLowerCase().

ushort QChar::toCaseFolded ( ushort ucs2 ) `[static]`

This is an overloaded function.

Returns the case folded equivalent of the UCS-2-encoded character specified by ucs2. For most Unicode characters this is the same as toLowerCase().

char QChar::toLatin1 () const

Returns the Latin-1 character equivalent to the QChar, or 0. This is mainly useful for non-internationalized software.

See also toAscii(), unicode(), and QTextCodec::codecForCStrings().

QChar QChar::toLower () const

Returns the lowercase equivalent if the character is uppercase or titlecase; otherwise returns the character itself.

uint QChar::toLower ( uint ucs4 ) `[static]`

This is an overloaded function.

Returns the lowercase equivalent of the UCS-4-encoded character specified by ucs4 if the character is uppercase or titlecase; otherwise returns the character itself.

ushort QChar::toLower ( ushort ucs2 ) `[static]`

This is an overloaded function.

Returns the lowercase equivalent of the UCS-2-encoded character specified by ucs2 if the character is uppercase or titlecase; otherwise returns the character itself.

QChar QChar::toTitleCase () const

Returns the title case equivalent if the character is lowercase or uppercase; otherwise returns the character itself.

uint QChar::toTitleCase ( uint ucs4 ) `[static]`

This is an overloaded function.

Returns the title case equivalent of the UCS-4-encoded character specified by ucs4 if the character is lowercase or uppercase; otherwise returns the character itself.

ushort QChar::toTitleCase ( ushort ucs2 ) `[static]`

This is an overloaded function.

Returns the title case equivalent of the UCS-2-encoded character specified by ucs2 if the character is lowercase or uppercase; otherwise returns the character itself.

QChar QChar::toUpper () const

Returns the uppercase equivalent if the character is lowercase or titlecase; otherwise returns the character itself.

uint QChar::toUpper ( uint ucs4 ) `[static]`

This is an overloaded function.

Returns the uppercase equivalent of the UCS-4-encoded character specified by ucs4 if the character is lowercase or titlecase; otherwise returns the character itself.

ushort QChar::toUpper ( ushort ucs2 ) `[static]`

This is an overloaded function.

Returns the uppercase equivalent of the UCS-2-encoded character specified by ucs2 if the character is lowercase or titlecase; otherwise returns the character itself.

ushort & QChar::unicode ()

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

ushort QChar::unicode () const

This is an overloaded function.

UnicodeVersion QChar::unicodeVersion () const

Returns the Unicode version that introduced this character.

UnicodeVersion QChar::unicodeVersion ( uint ucs4 ) `[static]`

This is an overloaded function.

Returns the Unicode version that introduced the character specified in its UCS-4-encoded form as ucs4.

UnicodeVersion QChar::unicodeVersion ( ushort ucs2 ) `[static]`

This is an overloaded function.

Returns the Unicode version that introduced the character specified in its UCS-2-encoded form as ucs2.

Related Non-Members

bool operator!= ( QChar c1, QChar c2 )

Returns true if c1 and c2 are not the same Unicode character; otherwise returns false.

bool operator< ( QChar c1, QChar c2 )

Returns true if the numeric Unicode value of c1 is less than that of c2; otherwise returns false.

QDataStream & operator<< ( QDataStream & out, const QChar & chr )

Writes the char chr to the stream out.

bool operator<= ( QChar c1, QChar c2 )

Returns true if the numeric Unicode value of c1 is less than or equal to that of c2; 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> ( QChar c1, QChar c2 )

Returns true if the numeric Unicode value of c1 is greater than that of c2; otherwise returns false.

bool operator>= ( QChar c1, QChar c2 )

Returns true if the numeric Unicode value of c1 is greater than or equal to that of c2; otherwise returns false.

QDataStream & operator>> ( QDataStream & in, QChar & chr )

Reads a char from the stream in into char chr.

API Lookup

Qt Topics

Examples

Contents

QChar Class Reference

Public Types

Public Functions

Static Public Members

Related Non-Members

Detailed Description

Member Type Documentation

enum QChar::Category

enum QChar::Decomposition

enum QChar::Direction

enum QChar::Joining

enum QChar::SpecialCharacter

enum QChar::UnicodeVersion

Member Function Documentation

QChar::QChar ()

QChar::QChar ( char ch )

QChar::QChar ( uchar ch )

QChar::QChar ( QLatin1Char ch )

QChar::QChar ( uchar cell, uchar row )

QChar::QChar ( ushort code )

QChar::QChar ( short code )

QChar::QChar ( uint code )

QChar::QChar ( int code )

QChar::QChar ( SpecialCharacter ch )

Category QChar::category () const

Category QChar::category ( uint ucs4 ) [static]

Category QChar::category ( ushort ucs2 ) [static]

uchar QChar::cell () const

unsigned char QChar::combiningClass () const

unsigned char QChar::combiningClass ( uint ucs4 ) [static]

unsigned char QChar::combiningClass ( ushort ucs2 ) [static]

QString QChar::decomposition () const

QString QChar::decomposition ( uint ucs4 ) [static]

Decomposition QChar::decompositionTag () const

Decomposition QChar::decompositionTag ( uint ucs4 ) [static]

int QChar::digitValue () const

int QChar::digitValue ( ushort ucs2 ) [static]

int QChar::digitValue ( uint ucs4 ) [static]

Direction QChar::direction () const

Direction QChar::direction ( uint ucs4 ) [static]

Direction QChar::direction ( ushort ucs2 ) [static]

QChar QChar::fromAscii ( char c ) [static]

QChar QChar::fromLatin1 ( char c ) [static]

bool QChar::hasMirrored () const

ushort QChar::highSurrogate ( uint ucs4 ) [static]

bool QChar::isDigit () const

bool QChar::isHighSurrogate () const

bool QChar::isHighSurrogate ( uint ucs4 ) [static]

bool QChar::isLetter () const

bool QChar::isLetterOrNumber () const

bool QChar::isLowSurrogate () const

bool QChar::isLowSurrogate ( uint ucs4 ) [static]

bool QChar::isLower () const

bool QChar::isMark () const

bool QChar::isNull () const

bool QChar::isNumber () const

bool QChar::isPrint () const

bool QChar::isPunct () const

bool QChar::isSpace () const

bool QChar::isSymbol () const

bool QChar::isTitleCase () const

bool QChar::isUpper () const

Joining QChar::joining () const

Joining QChar::joining ( uint ucs4 ) [static]

Joining QChar::joining ( ushort ucs2 ) [static]

ushort QChar::lowSurrogate ( uint ucs4 ) [static]

QChar QChar::mirroredChar () const

uint QChar::mirroredChar ( uint ucs4 ) [static]

ushort QChar::mirroredChar ( ushort ucs2 ) [static]

bool QChar::requiresSurrogates ( uint ucs4 ) [static]

uchar QChar::row () const

uint QChar::surrogateToUcs4 ( ushort high, ushort low ) [static]

uint QChar::surrogateToUcs4 ( QChar high, QChar low ) [static]

char QChar::toAscii () const

QChar QChar::toCaseFolded () const

uint QChar::toCaseFolded ( uint ucs4 ) [static]

Category QChar::category ( uint ucs4 ) `[static]`

Category QChar::category ( ushort ucs2 ) `[static]`

unsigned char QChar::combiningClass ( uint ucs4 ) `[static]`

unsigned char QChar::combiningClass ( ushort ucs2 ) `[static]`

QString QChar::decomposition ( uint ucs4 ) `[static]`

Decomposition QChar::decompositionTag ( uint ucs4 ) `[static]`

int QChar::digitValue ( ushort ucs2 ) `[static]`

int QChar::digitValue ( uint ucs4 ) `[static]`

Direction QChar::direction ( uint ucs4 ) `[static]`

Direction QChar::direction ( ushort ucs2 ) `[static]`

QChar QChar::fromAscii ( char c ) `[static]`

QChar QChar::fromLatin1 ( char c ) `[static]`

ushort QChar::highSurrogate ( uint ucs4 ) `[static]`

bool QChar::isHighSurrogate ( uint ucs4 ) `[static]`

bool QChar::isLowSurrogate ( uint ucs4 ) `[static]`

Joining QChar::joining ( uint ucs4 ) `[static]`

Joining QChar::joining ( ushort ucs2 ) `[static]`

ushort QChar::lowSurrogate ( uint ucs4 ) `[static]`

uint QChar::mirroredChar ( uint ucs4 ) `[static]`

ushort QChar::mirroredChar ( ushort ucs2 ) `[static]`

bool QChar::requiresSurrogates ( uint ucs4 ) `[static]`

uint QChar::surrogateToUcs4 ( ushort high, ushort low ) `[static]`

uint QChar::surrogateToUcs4 ( QChar high, QChar low ) `[static]`

uint QChar::toCaseFolded ( uint ucs4 ) `[static]`

ushort QChar::toCaseFolded ( ushort ucs2 ) `[static]`

uint QChar::toLower ( uint ucs4 ) `[static]`

ushort QChar::toLower ( ushort ucs2 ) `[static]`

uint QChar::toTitleCase ( uint ucs4 ) `[static]`

ushort QChar::toTitleCase ( ushort ucs2 ) `[static]`

uint QChar::toUpper ( uint ucs4 ) `[static]`

ushort QChar::toUpper ( ushort ucs2 ) `[static]`

UnicodeVersion QChar::unicodeVersion ( uint ucs4 ) `[static]`

UnicodeVersion QChar::unicodeVersion ( ushort ucs2 ) `[static]`