qintdictiterator.html
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"><!-- /home/reggie/tmp/qt-3.0-reggie-5401/qt-x11-commercial-3.0.5/doc/qintdict.doc:306 --><html><head><meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"><title>QIntDictIterator Class</title><style type="text/css"><!--h3.fn,span.fn { margin-left: 1cm; text-indent: -1cm; }a:link { color: #004faf; text-decoration: none }a:visited { color: #672967; text-decoration: none }body { background: #ffffff; color: black; }--></style></head><body><table border="0" cellpadding="0" cellspacing="0" width="100%"><tr bgcolor="#E5E5E5"><td valign=center> <a href="index.html"><font color="#004faf">Home</font></a> | <a href="classes.html"><font color="#004faf">All Classes</font></a> | <a href="mainclasses.html"><font color="#004faf">Main Classes</font></a> | <a href="annotated.html"><font color="#004faf">Annotated</font></a> | <a href="groups.html"><font color="#004faf">Grouped Classes</font></a> | <a href="functions.html"><font color="#004faf">Functions</font></a></td><td align="right" valign="center"><img src="logo32.png" align="right" width="64" height="32" border="0"></td></tr></table><h1 align=center>QIntDictIterator Class Reference</h1><p>The QIntDictIterator class provides an iterator for QIntDict collections.<a href="#details">More...</a><p><tt>#include <<a href="qintdict-h.html">qintdict.h</a>></tt><p><a href="qintdictiterator-members.html">List of all member functions.</a><h2>Public Members</h2><ul><li><div class=fn><a href="#QIntDictIterator"><b>QIntDictIterator</b></a> ( const QIntDict<type> & dict )</div></li><li><div class=fn><a href="#~QIntDictIterator"><b>~QIntDictIterator</b></a> ()</div></li><li><div class=fn>uint <a href="#count"><b>count</b></a> () const</div></li><li><div class=fn>bool <a href="#isEmpty"><b>isEmpty</b></a> () const</div></li><li><div class=fn>type * <a href="#toFirst"><b>toFirst</b></a> ()</div></li><li><div class=fn><a href="#operator-type-*"><b>operator type *</b></a> () const</div></li><li><div class=fn>type * <a href="#current"><b>current</b></a> () const</div></li><li><div class=fn>long <a href="#currentKey"><b>currentKey</b></a> () const</div></li><li><div class=fn>type * <a href="#operator()"><b>operator()</b></a> ()</div></li><li><div class=fn>type * <a href="#operator++"><b>operator++</b></a> ()</div></li><li><div class=fn>type * <a href="#operator+-eq"><b>operator+=</b></a> ( uint jump )</div></li></ul><hr><a name="details"></a><h2>Detailed Description</h2>The QIntDictIterator class provides an iterator for <a href="qintdict.html">QIntDict</a> collections.<p> <p> QIntDictIterator is implemented as a template class.Define a template instance QIntDictIterator<X> to create adictionary iterator that operates on QIntDict<X> (dictionary of X*).<p> Example:<pre> <a href="qintdict.html">QIntDict</a><QLineEdit> fields; for ( int i = 0; i < 3; i++ ) fields.<a href="qintdict.html#insert">insert</a>( i, new <a href="qlineedit.html">QLineEdit</a>( this ) ); fields[0]->setText( "Homer" ); fields[1]->setText( "Simpson" ); fields[2]->setText( "45" ); QIntDictIterator<char> it( fields ); for ( ; it.<a href="#current">current</a>(); ++it ) cout << it.<a href="#currentKey">currentKey</a>() << ": " << it.<a href="#current">current</a>()->text() << endl; // Output (random order): // 0: Homer // 1: Simpson // 2: 45 </pre> <p> Note that the traversal order is arbitrary; you are not guaranteed theorder above.<p> Multiple iterators may independently traverse the same dictionary.A <a href="qintdict.html">QIntDict</a> knows about all the iterators that are operating on the dictionary.When an item is removed from the dictionary, QIntDict updates alliterators that refer the removed item to point to the next itemin the traversing order.<p> <p>See also <a href="qintdict.html">QIntDict</a>, <a href="collection.html">Collection Classes</a> and <a href="tools.html">Non-GUI Classes</a>.<hr><h2>Member Function Documentation</h2><h3 class=fn><a name="QIntDictIterator"></a>QIntDictIterator::QIntDictIterator ( const <a href="qintdict.html">QIntDict</a><type> & dict )</h3>Constructs an iterator for <em>dict</em>. The current iterator item isset to point to the 'first' item in the <em>dict</em>. The first itemrefers to the first item in the dictionary's arbitrary internal ordering.<h3 class=fn><a name="~QIntDictIterator"></a>QIntDictIterator::~QIntDictIterator ()</h3>Destroys the iterator.<h3 class=fn>uint <a name="count"></a>QIntDictIterator::count () const</h3>Returns the number of items in the dictionary this iterator operates over.<p>See also <a href="#isEmpty">isEmpty</a>().<h3 class=fn>type * <a name="current"></a>QIntDictIterator::current () const</h3>Returns a pointer to the current iterator item.<h3 class=fn>long <a name="currentKey"></a>QIntDictIterator::currentKey () const</h3>Returns the key for the current iterator item.<h3 class=fn>bool <a name="isEmpty"></a>QIntDictIterator::isEmpty () const</h3>Returns TRUE if the dictionary is empty; otherwise eturns FALSE.<p>See also <a href="#count">count</a>().<h3 class=fn><a name="operator-type-*"></a>QIntDictIterator::operator type * () const</h3>Cast operator. Returns a pointer to the current iterator item.Same as <a href="#current">current</a>().<h3 class=fn>type * <a name="operator()"></a>QIntDictIterator::operator() ()</h3>Makes the succeeding item current and returns the original current item.<p> If the current iterator item was the last item in the dictionary or if itwas null, null is returned.<h3 class=fn>type * <a name="operator++"></a>QIntDictIterator::operator++ ()</h3>Prefix ++ makes the succeeding item current and returns the new currentitem.<p> If the current iterator item was the last item in the dictionary or if itwas null, null is returned.<h3 class=fn>type * <a name="operator+-eq"></a>QIntDictIterator::operator+= ( uint jump )</h3>Sets the current item to the item <em>jump</em> positions after the current item,and returns a pointer to that item.<p> If that item is beyond the last item or if the dictionary is empty,it sets the current item to null and returns null.<h3 class=fn>type * <a name="toFirst"></a>QIntDictIterator::toFirst ()</h3>Sets the current iterator item to point to the first item in thedictionary and returns a pointer to the item. The first item refersto the first item in the dictionary's arbitrary internal ordering.If the dictionary is empty it sets the current item to null andreturns null.<!-- eof --><hr><p>This file is part of the <a href="index.html">Qt toolkit</a>.Copyright © 1995-2002<a href="http://www.trolltech.com/">Trolltech</a>. All Rights Reserved.<p><address><hr><div align=center><table width=100% cellspacing=0 border=0><tr><td>Copyright © 2002 <a href="http://www.trolltech.com">Trolltech</a><td><a href="http://www.trolltech.com/trademarks.html">Trademarks</a><td align=right><div align=right>Qt version 3.0.5</div></table></div></address></body></html>⌨️ 快捷键说明
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