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<title>QConstString Class</title>
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<td align="right" valign="center"><img src="logo32.png" align="right" width="64" height="32" border="0"></td></tr></table><h1 align=center>QConstString Class Reference</h1>
<p>The QConstString class provides string objects using constant Unicode data.
<a href="#details">More...</a>
<p>All the functions in this class are <a href="threads.html#reentrant">reentrant</a> when Qt is built with thread support.</p>
<p><tt>#include <<a href="qstring-h.html">qstring.h</a>></tt>
<p><a href="qconststring-members.html">List of all member functions.</a>
<h2>Public Members</h2>
<ul>
<li class=fn><a href="#QConstString"><b>QConstString</b></a> ( const QChar * unicode, uint length )</li>
<li class=fn><a href="#~QConstString"><b>~QConstString</b></a> ()</li>
<li class=fn>const QString & <a href="#string"><b>string</b></a> () const</li>
</ul>
<hr><a name="details"></a><h2>Detailed Description</h2>
The QConstString class provides string objects using constant Unicode data.
<p> In order to minimize copying, highly optimized applications can
use QConstString to provide a <a href="qstring.html">QString</a>-compatible object from
existing Unicode data. It is then the programmer's responsibility
to ensure that the Unicode data exists for the entire lifetime of
the QConstString object.
<p> A QConstString is created with the QConstString constructor. The
string held by the object can be obtained by calling <a href="#string">string</a>().
<p>See also <a href="text.html">Text Related Classes</a>.
<hr><h2>Member Function Documentation</h2>
<h3 class=fn><a name="QConstString"></a>QConstString::QConstString ( const <a href="qchar.html">QChar</a> * unicode, uint length )
</h3>
Constructs a QConstString that uses the first <em>length</em> Unicode
characters in the array <em>unicode</em>. Any attempt to modify copies
of the string will cause it to create a copy of the data, thus it
remains forever unmodified.
<p> The data in <em>unicode</em> is not copied. The caller must be able to
guarantee that <em>unicode</em> will not be deleted or modified.
<h3 class=fn><a name="~QConstString"></a>QConstString::~QConstString ()
</h3>
Destroys the QConstString, creating a copy of the data if other
strings are still using it.
<h3 class=fn>const <a href="qstring.html">QString</a> & <a name="string"></a>QConstString::string () const
</h3>
<p> Returns a constant string referencing the data passed during
construction.
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