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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"><html><head><meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
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<h1 align=center>QChar Class Reference</h1><br clear="all">
<p>
The QChar class provides a light-weight Unicode character.
<a href="#details">More...</a>
<p>
<code>#include <<a href="qstring-h.html">qstring.h</a>></code>
<p><a href="qchar-members.html">List of all member functions.</a>
<h2>Public Members</h2>
<ul>
<li><div class="fn"><a href="#f58106"><b>QChar</b></a>()</div>
<li><div class="fn"><a href="#80a416"><b>QChar</b></a>(charc)</div>
<li><div class="fn"><a href="#5ccac0"><b>QChar</b></a>(ucharc)</div>
<li><div class="fn"><a href="#eef71a"><b>QChar</b></a>(ucharc, ucharr)</div>
<li><div class="fn"><a href="#0735fc"><b>QChar</b></a>(constQChar&c)</div>
<li><div class="fn"><a href="#42cc64"><b>QChar</b></a>(ushortrc)</div>
<li><div class="fn"><a href="#660223"><b>QChar</b></a>(shortrc)</div>
<li><div class="fn"><a href="#45828a"><b>QChar</b></a>(uintrc)</div>
<li><div class="fn"><a href="#d9d049"><b>QChar</b></a>(intrc)</div>
<li><div class="fn">enum<a href="#Category"><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_Dask, Punctuation_Open, Punctuation_Close, Punctuation_InitialQuote, Punctuation_FinalQuote, Punctuation_Other, Symbol_Math, Symbol_Currency, Symbol_Modifier, Symbol_Other}</div>
<li><div class="fn">enum<a href="#Direction"><b>Direction</b></a>{DirL, DirR, DirEN, DirES, DirET, DirAN, DirCS, DirB, DirS, DirWS, DirON, DirLRE, DirLRO, DirAL, DirRLE, DirRLO, DirPDF, DirNSM, DirBN}</div>
<li><div class="fn">enum<a href="#Decomposition"><b>Decomposition</b></a>{Single, Canonical, Font, NoBreak, Initial, Medial, Final, Isolated, Circle, Super, Sub, Vertical, Wide, Narrow, Small, Square, Compat, Fraction}</div>
<li><div class="fn">enum<a href="#Joining"><b>Joining</b></a>{OtherJoining, Dual, Right, Center}</div>
<li><div class="fn">int<a href="#6ece45"><b>digitValue</b></a>()const</div>
<li><div class="fn">QChar<a href="#83cf52"><b>lower</b></a>()const</div>
<li><div class="fn">QChar<a href="#1fe24d"><b>upper</b></a>()const</div>
<li><div class="fn">Category<a href="#14501e"><b>category</b></a>()const</div>
<li><div class="fn">Direction<a href="#5d99d7"><b>direction</b></a>()const</div>
<li><div class="fn">Joining<a href="#c26982"><b>joining</b></a>()const</div>
<li><div class="fn">bool<a href="#2d749c"><b>mirrored</b></a>()const</div>
<li><div class="fn">QChar<a href="#72f248"><b>mirroredChar</b></a>()const</div>
<li><div class="fn">QString<a href="#5fb260"><b>decomposition</b></a>()const</div>
<li><div class="fn">Decomposition<a href="#b2f5f6"><b>decompositionTag</b></a>()const</div>
<li><div class="fn">char<a href="#2c350b"><b>latin1</b></a>()const</div>
<li><div class="fn">ushort<a href="#6e646e"><b>unicode</b></a>()const</div>
<li><div class="fn">operator<a href=qchar.html#96baac><b>char</b></a>()const</div>
<li><div class="fn">bool<a href="#0829fa"><b>isNull</b></a>()const</div>
<li><div class="fn">bool<a href="#c73446"><b>isPrint</b></a>()const</div>
<li><div class="fn">bool<a href="#3dce03"><b>isPunct</b></a>()const</div>
<li><div class="fn">bool<a href="#53ba36"><b>isSpace</b></a>()const</div>
<li><div class="fn">bool<a href="#b0cc64"><b>isMark</b></a>()const</div>
<li><div class="fn">bool<a href="#45a904"><b>isLetter</b></a>()const</div>
<li><div class="fn">bool<a href="#81241c"><b>isNumber</b></a>()const</div>
<li><div class="fn">bool<a href="#651c6d"><b>isLetterOrNumber</b></a>()const</div>
<li><div class="fn">bool<a href="#75e23e"><b>isDigit</b></a>()const</div>
<li><div class="fn">uchar&<a href="#7bf3d4"><b>cell</b></a>()</div>
<li><div class="fn">uchar&<a href="#a6cccb"><b>row</b></a>()</div>
<li><div class="fn">uchar<a href="#d0ae42"><b>cell</b></a>()const</div>
<li><div class="fn">uchar<a href="#e8c8b6"><b>row</b></a>()const</div>
</ul>
<h2>Static Public Members</h2>
<ul>
<li><div class="fn">bool<a href="#d78f62"><b>networkOrdered</b></a>()</div>
</ul>
<h2>Related Functions</h2>
(Note that these are not member functions.)
<ul>
<li>int <a href="qchar.html#150798"><b>operator>=</b></a> (QChar c1, QChar c2)
<li>int <a href="qchar.html#26294b"><b>operator></b></a> (QChar c1, QChar c2)
<li>int <a href="qchar.html#332778"><b>operator==</b></a> (QChar c1, QChar c2)
<li>int <a href="qchar.html#4c1113"><b>operator<</b></a> (char ch, QChar c)
<li>int <a href="qchar.html#653eef"><b>operator>=</b></a> (char ch, QChar c)
<li>int <a href="qchar.html#71a007"><b>operator==</b></a> (char ch, QChar c)
<li>int <a href="qchar.html#7b12b1"><b>operator!=</b></a> (QChar c, char ch)
<li>int <a href="qchar.html#7f6c3b"><b>operator==</b></a> (QChar c, char ch)
<li>int <a href="qchar.html#8315db"><b>operator<=</b></a> (QChar c1, QChar c2)
<li>int <a href="qchar.html#8679ca"><b>operator<=</b></a> (char ch, QChar c)
<li>int <a href="qchar.html#93a5c2"><b>operator>=</b></a> (QChar c, char ch)
<li>int <a href="qchar.html#962cf5"><b>operator!=</b></a> (char ch, QChar c)
<li>int <a href="qchar.html#9e3728"><b>operator<=</b></a> (QChar c, char ch)
<li>int <a href="qchar.html#a9436b"><b>operator></b></a> (char ch, QChar c)
<li>int <a href="qchar.html#c4b864"><b>operator<</b></a> (QChar c1, QChar c2)
<li>int <a href="qchar.html#e7f7df"><b>operator<</b></a> (QChar c, char ch)
<li>int <a href="qchar.html#eed882"><b>operator></b></a> (QChar c, char ch)
<li>int <a href="qchar.html#fac67a"><b>operator!=</b></a> (QChar c1, QChar c2)
</ul>
<hr><h2><a name="details"></a>Detailed Description</h2>
The QChar class provides a light-weight Unicode character.
<p>
Unicode characters are (so far) 16-bit entities without any markup or
structure. This class represents such an entity. It is rather
light-weight, so it can be used everywhere. Most compilers treat it
approximately like "short int". (In a few years, it may be necessary
to make QChar 32-bit, once more than 65536 Unicode code points have
been defined and come into use.)
<p>QChar provides a full complement of testing/classification functions,
conversion to and from other formats, from composed to decomposed
unicode, and will try 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, and FALSE
otherwise.
<p>These functions are: <a href="#0829fa">isNull</a>() (returns TRUE if the character is
U+0000), <a href="#c73446">isPrint</a>() (TRUE if the character is any sort of printable
character, including whitespace), <a href="#3dce03">isPunct</a>() (any sort of punctation),
<a href="#b0cc64">isMark</a>() (Unicode Marks), isLetter (letters), <a href="#81241c">isNumber</a>() (any sort of
numeric characters), <a href="#651c6d">isLetterOrNumber</a>(), and <a href="#75e23e">isDigit</a>() (decimal digits).
All of these are wrappers around <a href="#14501e">category</a>(), which returns the
unicode-defined category of each character.
<p>QChar further provides <a href="#5d99d7">direction</a>(), which indicates the "natural"
writing direction of this character, <a href="#c26982">joining</a>(), which indicates how
this character joins with its neighbors (needed mostly for Arabic)
and finally <a href="#2d749c">mirrored</a>(), which indicates whether this character needs
to be mirrored when it is printed in its unnatural writing
direction.
<p>Composed Unicode characters (like å) can be converted to
decomposed Unicode ("a" followed by "ring above") using
<a href="#5fb260">decomposition</a>().
<p>In Unicode, comparison is not necessarily possible, and case
conversion is at best very hard. Unicode, covering the "entire"
globe, also includes a globe-sized collection of 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 <a href="#1fe24d">upper</a>() and <a href="#83cf52">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.
<p>The conversion functions include <a href="#6e646e">unicode</a>() (to a scalar), <a href="#2c350b">latin1</a>() (to
scalar, but converts all non-Latin1 characters to 0), <a href="#a6cccb">row</a>() (gives the
Unicode row), <a href="#7bf3d4">cell</a>() (gives the unicode cell), <a href="#6ece45">digitValue</a>() (gives the
integer value of any of the numerous digit characters), and a host of
constructors.
<p>See also <a href="qstring.html">QString</a>, <a href="qcharref.html">QCharRef</a> and <a href="unicode.html">About Unicode</a>
<hr><h2>Member Type Documentation</h2>
<h3 class="fn"><a name="Category">QChar::Category</a></h3>
This enum maps the Unicode character categories. The currently known
categories are: <ul>
<li> <code>NoCategory</code> - used when Qt is dazed and confused and cannot
make sense of anything.
<li> <code>Mark_NonSpacing</code> - (Mn) -
<li> <code>Mark_SpacingCombining</code> - (Mc) -
<li> <code>Mark_Enclosing</code> - (Me) -
<li> <code>Number_DecimalDigit</code> - (Nd) -
<li> <code>Number_Letter</code> - (Nl) -
<li> <code>Number_Other</code> - (No) -
<li> <code>Separator_Space</code> - (Zs) -
<li> <code>Separator_Line</code> - (Zl) -
<li> <code>Separator_Paragraph</code> - (Zp) -
<li> <code>Other_Control</code> - (Cc) -
<li> <code>Other_Format</code> - (Cf) -
<li> <code>Other_Surrogate</code> - (Cs) -
<li> <code>Other_PrivateUse</code> - (Co) -
<li> <code>Other_NotAssigned</code> - (Cn) -
<li> <code>Letter_Uppercase</code> - (Lu) -
<li> <code>Letter_Lowercase</code> - (Ll) -
<li> <code>Letter_Titlecase</code> - (Lt) -
<li> <code>Letter_Modifier</code> - (Lm) -
<li> <code>Letter_Other</code> - (Lo) -
<li> <code>Punctuation_Connector</code> - (Pc) -
<li> <code>Punctuation_Dask</code> - (Pd) -
<li> <code>Punctuation_Open</code> - (Ps) -
<li> <code>Punctuation_Close</code> - (Pe) -
<li> <code>Punctuation_InitialQuote</code> - (Pi) -
<li> <code>Punctuation_FinalQuote</code> - (Pf) -
<li> <code>Punctuation_Other</code> - (Po) -
<li> <code>Symbol_Math</code> - (Sm) -
<li> <code>Symbol_Currency</code> - (Sc) -
<li> <code>Symbol_Modifier</code> - (Sk) -
<li> <code>Symbol_Other</code> - (So) -
<p></ul>
<h3 class="fn"><a name="Decomposition">QChar::Decomposition</a></h3>
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">QChar::Direction</a></h3>
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">QChar::Joining</a></h3>
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.
<hr><h2>Member Function Documentation</h2>
<h3 class="fn"><a name="f58106"></a>QChar::QChar()</h3>
<p>Constructs a null QChar (one that <a href="#0829fa">isNull</a>()).
<h3 class="fn"><a name="80a416"></a>QChar::QChar(charc)</h3>
<p>Constructs a QChar corresponding to ASCII/Latin1 character <em>c.</em>
<h3 class="fn"><a name="0735fc"></a>QChar::QChar(constQChar&c)</h3>
<p>Constructs a copy of <em>c.</em> This is a deep copy, if such a
light-weight object can be said to have deep copies.
<h3 class="fn"><a name="d9d049"></a>QChar::QChar(intrc)</h3>
<p>Constructs a QChar for the character with Unicode code point <em>rc.</em>
<h3 class="fn"><a name="660223"></a>QChar::QChar(shortrc)</h3>
<p>Constructs a QChar for the character with Unicode code point <em>rc.</em>
<h3 class="fn"><a name="5ccac0"></a>QChar::QChar(ucharc)</h3>
<p>Constructs a QChar corresponding to ASCII/Latin1 character <em>c.</em>
<h3 class="fn"><a name="eef71a"></a>QChar::QChar(ucharc, ucharr)</h3>
<p>Constructs a QChar for Unicode cell <em>c</em> in row <em>r.</em>
<h3 class="fn"><a name="45828a"></a>QChar::QChar(uintrc)</h3>
<p>Constructs a QChar for the character with Unicode code point <em>rc.</em>
<h3 class="fn"><a name="42cc64"></a>QChar::QChar(ushortrc)</h3>
<p>Constructs a QChar for the character with Unicode code point <em>rc.</em>
<h3 class="fn"><a name="96baac"></a>QChar::operatorchar()const</h3>
<p>Returns the Latin1 character equivalent to the QChar,
or 0. This is mainly useful for non-internationalized software.
<p>See also <a href="#6e646e">unicode</a>().
<h3 class="fn">QChar::Category<a name="14501e"></a>QChar::category()const</h3>
<p>Returns the character category.
<p>See also <a href="#Category">Category</a>.
<h3 class="fn">uchar<a name="d0ae42"></a>QChar::cell()const</h3>
<p>Returns the cell (least significant byte) of the Unicode character.
<h3 class="fn">uchar&<a name="7bf3d4"></a>QChar::cell()</h3>
<p>Returns a reference to the cell (least significant byte) of the Unicode character.
<h3 class="fn"><a href="qstring.html">QString</a><a name="5fb260"></a>QChar::decomposition()const</h3>
<p>Decomposes a character into its parts. Returns QString::null if
no decomposition exists.
<h3 class="fn">QChar::Decomposition<a name="b2f5f6"></a>QChar::decompositionTag()const</h3>
<p>Returns the tag defining the composition of the character.
Returns QChar::Single if no decomposition exists.
<h3 class="fn">int<a name="6ece45"></a>QChar::digitValue()const</h3>
<p>Returns the numeric value of the digit, or -1 if the character is not
a digit.
<h3 class="fn">QChar::Direction<a name="5d99d7"></a>QChar::direction()const</h3>
<p>Returns the characters directionality.
<p>See also <a href="#Direction">Direction</a>.
<h3 class="fn">bool<a name="75e23e"></a>QChar::isDigit()const</h3>
<p>Returns whether the character is a decimal digit (Number_DecimalDigit).
<h3 class="fn">bool<a name="45a904"></a>QChar::isLetter()const</h3>
<p>Returns whether the character is a letter (Letter_* categories).
<h3 class="fn">bool<a name="651c6d"></a>QChar::isLetterOrNumber()const</h3>
<p>Returns whether the character is a letter or number (Letter_* or Number_* categories).
<h3 class="fn">bool<a name="b0cc64"></a>QChar::isMark()const</h3>
<p>Returns whether the character is a mark (Mark_* categories).
<h3 class="fn">bool<a name="0829fa"></a>QChar::isNull()const</h3>
<p>Returns TRUE if the characters is the unicode character 0x0000,
ie. ASCII NUL.
<h3 class="fn">bool<a name="81241c"></a>QChar::isNumber()const</h3>
<p>Returns whether the character is a number (of any sort - Number_* categories).
<p>See also <a href="#75e23e">isDigit</a>().
<h3 class="fn">bool<a name="c73446"></a>QChar::isPrint()const</h3>
<p>Returns whether the character is a printable character. This is
any character not of category Cc or Cn. Note that this gives no indication
of whether the character is available in some font.
<h3 class="fn">bool<a name="3dce03"></a>QChar::isPunct()const</h3>
<p>Returns whether the character is punctuation (Punctuation_* categories).
<h3 class="fn">bool<a name="53ba36"></a>QChar::isSpace()const</h3>
<p>Returns whether the character is a separator
character (Separator_* categories).
<h3 class="fn">QChar::Joining<a name="c26982"></a>QChar::joining()const</h3>
<p>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 arabic).
<h3 class="fn">char<a name="2c350b"></a>QChar::latin1()const</h3>
<p>Returns a latin-1 copy of this character, if this character is in
the latin-1 character set. If not, this function returns 0.
<h3 class="fn">QChar<a name="83cf52"></a>QChar::lower()const</h3>
<p>Returns the lowercase equivalent if the character is uppercase,
or the character itself otherwise.
<h3 class="fn">bool<a name="2d749c"></a>QChar::mirrored()const</h3>
<p>Returns whether the character is a mirrored character (one that
should be reversed if the text direction is reversed).
<h3 class="fn">QChar<a name="72f248"></a>QChar::mirroredChar()const</h3>
<p>Returns the mirrored char if this character is a mirrored char, the char
itself otherwise.
<h3 class="fn">bool<a name="d78f62"></a>QChar::networkOrdered() <code>[static]</code></h3>
<p>Returns TRUE if this character is in network byte order (MSB first),
and FALSE if it is not. This is a platform-dependent property, so
we strongly advise against using this function in portable code.
<h3 class="fn">uchar<a name="e8c8b6"></a>QChar::row()const</h3>
<p>Returns the row (most significant byte) of the Unicode character.
<h3 class="fn">uchar&<a name="a6cccb"></a>QChar::row()</h3>
<p>Returns a reference to the row (most significant byte) of the Unicode character.
<h3 class="fn">ushort<a name="6e646e"></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 (eg. indexing into an array of Unicode information), this function
is useful.
<h3 class="fn">QChar<a name="1fe24d"></a>QChar::upper()const</h3>
<p>Returns the uppercase equivalent if the character is lowercase,
or the character itself otherwise.
<hr><h2>Related Functions</h2>
<h3>int <a name="150798"></a>operator>= (QChar c1, QChar c2)</h3>
<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.
<h3>int <a name="26294b"></a>operator> (QChar c1, QChar c2)</h3>
<p>Returns TRUE if the numeric Unicode value of <em>c1</em> is greater than
that of <em>c2.</em>
<h3>int <a name="332778"></a>operator== (QChar c1, QChar c2)</h3>
<p>Returns TRUE if <em>c1</em> and <em>c2</em> are the same Unicode character.
<h3>int <a name="4c1113"></a>operator< (char ch, QChar c)</h3>
<p>Returns TRUE if the numeric Unicode value of the ASCII/Latin1
character <em>ch</em> is less than that of <em>c.</em>
<h3>int <a name="653eef"></a>operator>= (char ch, QChar c)</h3>
<p>Returns TRUE if the numeric Unicode value of the ASCII/Latin1
character <em>ch</em> is greater than or equal to that of <em>c.</em>
<h3>int <a name="71a007"></a>operator== (char ch, QChar c)</h3>
<p>Returns TRUE if <em>c</em> is the ASCII/Latin1 character <em>ch.</em>
<h3>int <a name="7b12b1"></a>operator!= (QChar c, char ch)</h3>
<p>Returns TRUE if <em>c</em> is not the ASCII/Latin1 character <em>ch.</em>
<h3>int <a name="7f6c3b"></a>operator== (QChar c, char ch)</h3>
<p>Returns TRUE if <em>c</em> is the ASCII/Latin1 character <em>ch.</em>
<h3>int <a name="8315db"></a>operator<= (QChar c1, QChar c2)</h3>
<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.
<h3>int <a name="8679ca"></a>operator<= (char ch, QChar c)</h3>
<p>Returns TRUE if the numeric Unicode value of the ASCII/Latin1
character <em>ch</em> is less than or equal to that of <em>c.</em>
<h3>int <a name="93a5c2"></a>operator>= (QChar c, char ch)</h3>
<p>Returns TRUE if the numeric Unicode value of <em>c</em> is greater than or
equal to that of the ASCII/Latin1 character <em>ch.</em>
<h3>int <a name="962cf5"></a>operator!= (char ch, QChar c)</h3>
<p>Returns TRUE if <em>c</em> is not the ASCII/Latin1 character <em>ch.</em>
<h3>int <a name="9e3728"></a>operator<= (QChar c, char ch)</h3>
<p>Returns TRUE if the numeric Unicode value of <em>c</em> is less than or
equal to that of the ASCII/Latin1 character <em>ch.</em>
<h3>int <a name="a9436b"></a>operator> (char ch, QChar c)</h3>
<p>Returns TRUE if the numeric Unicode value of the ASCII/Latin1
character <em>ch</em> is greater than that of <em>c.</em>
<h3>int <a name="c4b864"></a>operator< (QChar c1, QChar c2)</h3>
<p>Returns TRUE if the numeric Unicode value of <em>c1</em> is less than that
of <em>c2.</em>
<h3>int <a name="e7f7df"></a>operator< (QChar c, char ch)</h3>
<p>Returns TRUE if the numeric Unicode value of <em>c</em> is less than that
of the ASCII/Latin1 character <em>ch.</em>
<h3>int <a name="eed882"></a>operator> (QChar c, char ch)</h3>
<p>Returns TRUE if the numeric Unicode value of <em>c</em> is greater than
that of the ASCII/Latin1 character <em>ch.</em>
<h3>int <a name="fac67a"></a>operator!= (QChar c1, QChar c2)</h3>
<p>Returns TRUE if <em>c1</em> and <em>c2</em> are not the same Unicode character.
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