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| 6 | <title>QConstString Class</title>
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| 32 | <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>
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| 33 |
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| 34 | <p>The QConstString class provides string objects using constant Unicode data.
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| 35 | <a href="#details">More...</a>
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| 36 | <p>All the functions in this class are <a href="threads.html#reentrant">reentrant</a> when Qt is built with thread support.</p>
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| 37 | <p><tt>#include <<a href="qstring-h.html">qstring.h</a>></tt>
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| 38 | <p><a href="qconststring-members.html">List of all member functions.</a>
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| 39 | <h2>Public Members</h2>
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| 40 | <ul>
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| 41 | <li class=fn><a href="#QConstString"><b>QConstString</b></a> ( const QChar * unicode, uint length )</li>
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| 42 | <li class=fn><a href="#~QConstString"><b>~QConstString</b></a> ()</li>
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| 43 | <li class=fn>const QString & <a href="#string"><b>string</b></a> () const</li>
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| 44 | </ul>
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| 45 | <hr><a name="details"></a><h2>Detailed Description</h2>
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| 46 |
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| 47 |
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| 48 |
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| 49 |
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| 50 | The QConstString class provides string objects using constant Unicode data.
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| 51 | <p> In order to minimize copying, highly optimized applications can
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| 52 | use QConstString to provide a <a href="qstring.html">QString</a>-compatible object from
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| 53 | existing Unicode data. It is then the programmer's responsibility
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| 54 | to ensure that the Unicode data exists for the entire lifetime of
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| 55 | the QConstString object.
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| 56 | <p> A QConstString is created with the QConstString constructor. The
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| 57 | string held by the object can be obtained by calling <a href="#string">string</a>().
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| 58 | <p>See also <a href="text.html">Text Related Classes</a>.
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| 59 |
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| 60 | <hr><h2>Member Function Documentation</h2>
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| 61 | <h3 class=fn><a name="QConstString"></a>QConstString::QConstString ( const <a href="qchar.html">QChar</a> * unicode, uint length )
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| 62 | </h3>
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| 63 | Constructs a QConstString that uses the first <em>length</em> Unicode
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| 64 | characters in the array <em>unicode</em>. Any attempt to modify copies
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| 65 | of the string will cause it to create a copy of the data, thus it
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| 66 | remains forever unmodified.
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| 67 | <p> The data in <em>unicode</em> is not copied. The caller must be able to
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| 68 | guarantee that <em>unicode</em> will not be deleted or modified.
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| 69 |
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| 70 | <h3 class=fn><a name="~QConstString"></a>QConstString::~QConstString ()
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| 71 | </h3>
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| 72 | Destroys the QConstString, creating a copy of the data if other
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| 73 | strings are still using it.
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| 74 |
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| 75 | <h3 class=fn>const <a href="qstring.html">QString</a> & <a name="string"></a>QConstString::string () const
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| 76 | </h3>
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| 77 |
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| 78 | <p> Returns a constant string referencing the data passed during
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| 79 | construction.
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| 80 |
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| 81 | <!-- eof -->
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| 83 | This file is part of the <a href="index.html">Qt toolkit</a>.
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| 84 | Copyright © 1995-2007
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| 85 | <a href="http://www.trolltech.com/">Trolltech</a>. All Rights Reserved.<p><address><hr><div align=center>
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| 89 | <td align=right><div align=right>Qt 3.3.8</div>
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