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177 lines
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177 lines
7.1 KiB
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<title>TQIntDictIterator 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>TQIntDictIterator Class Reference</h1>
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<p>The TQIntDictIterator class provides an iterator for TQIntDict collections.
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<a href="#details">More...</a>
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<p><tt>#include <<a href="tqintdict-h.html">tqintdict.h</a>></tt>
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<p><a href="tqintdictiterator-members.html">List of all member functions.</a>
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<h2>Public Members</h2>
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<ul>
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<li class=fn><a href="#TQIntDictIterator"><b>TQIntDictIterator</b></a> ( const TQIntDict<type> & dict )</li>
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<li class=fn><a href="#~TQIntDictIterator"><b>~TQIntDictIterator</b></a> ()</li>
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<li class=fn>uint <a href="#count"><b>count</b></a> () const</li>
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<li class=fn>bool <a href="#isEmpty"><b>isEmpty</b></a> () const</li>
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<li class=fn>type * <a href="#toFirst"><b>toFirst</b></a> ()</li>
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<li class=fn><a href="#operator-type-*"><b>operator type *</b></a> () const</li>
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<li class=fn>type * <a href="#current"><b>current</b></a> () const</li>
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<li class=fn>long <a href="#currentKey"><b>currentKey</b></a> () const</li>
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<li class=fn>type * <a href="#operator()"><b>operator()</b></a> ()</li>
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<li class=fn>type * <a href="#operator++"><b>operator++</b></a> ()</li>
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<li class=fn>type * <a href="#operator+-eq"><b>operator+=</b></a> ( uint jump )</li>
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</ul>
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<hr><a name="details"></a><h2>Detailed Description</h2>
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The TQIntDictIterator class provides an iterator for <a href="tqintdict.html">TQIntDict</a> collections.
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<p>
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<p> TQIntDictIterator is implemented as a template class. Define a
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template instance TQIntDictIterator<X> to create a dictionary
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iterator that operates on TQIntDict<X> (dictionary of X*).
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<p> Example:
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<pre>
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<a href="tqintdict.html">TQIntDict</a><TQLineEdit> fields;
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for ( int i = 0; i < 3; i++ )
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fields.<a href="tqintdict.html#insert">insert</a>( i, new <a href="ntqlineedit.html">TQLineEdit</a>( this ) );
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fields[0]->setText( "Homer" );
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fields[1]->setText( "Simpson" );
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fields[2]->setText( "45" );
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TQIntDictIterator<TQLineEdit> it( fields );
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for ( ; it.<a href="#current">current</a>(); ++it )
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cout << it.<a href="#currentKey">currentKey</a>() << ": " << it.<a href="#current">current</a>()->text() << endl;
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// Output (random order):
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// 0: Homer
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// 1: Simpson
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// 2: 45
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</pre>
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<p> Note that the traversal order is arbitrary; you are not guaranteed the
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order shown above.
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<p> Multiple iterators may independently traverse the same dictionary.
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A <a href="tqintdict.html">TQIntDict</a> knows about all the iterators that are operating on the
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dictionary. When an item is removed from the dictionary, TQIntDict
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updates all iterators that refer the removed item to point to the
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next item in the traversal order.
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<p> <p>See also <a href="tqintdict.html">TQIntDict</a>, <a href="collection.html">Collection Classes</a>, and <a href="tools.html">Non-GUI Classes</a>.
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<hr><h2>Member Function Documentation</h2>
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<h3 class=fn><a name="TQIntDictIterator"></a>TQIntDictIterator::TQIntDictIterator ( const <a href="tqintdict.html">TQIntDict</a><type> & dict )
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</h3>
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<p> Constructs an iterator for <em>dict</em>. The current iterator item is
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set to point to the 'first' item in the <em>dict</em>. The first item
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refers to the first item in the dictionary's arbitrary internal
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ordering.
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<h3 class=fn><a name="~TQIntDictIterator"></a>TQIntDictIterator::~TQIntDictIterator ()
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</h3>
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<p> Destroys the iterator.
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<h3 class=fn>uint <a name="count"></a>TQIntDictIterator::count () const
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</h3>
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<p> Returns the number of items in the dictionary this iterator
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operates over.
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<p> <p>See also <a href="#isEmpty">isEmpty</a>().
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<h3 class=fn>type * <a name="current"></a>TQIntDictIterator::current () const
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</h3>
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<p> Returns a pointer to the current iterator item.
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<h3 class=fn>long <a name="currentKey"></a>TQIntDictIterator::currentKey () const
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</h3>
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<p> Returns the key for the current iterator item.
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<h3 class=fn>bool <a name="isEmpty"></a>TQIntDictIterator::isEmpty () const
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</h3>
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<p> Returns TRUE if the dictionary is empty; otherwise eturns FALSE.
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<p> <p>See also <a href="#count">count</a>().
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<h3 class=fn><a name="operator-type-*"></a>TQIntDictIterator::operator type * () const
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</h3>
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<p> Cast operator. Returns a pointer to the current iterator item.
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Same as <a href="#current">current</a>().
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<h3 class=fn>type * <a name="operator()"></a>TQIntDictIterator::operator() ()
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</h3>
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<p> Makes the succeeding item current and returns the original current
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item.
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<p> If the current iterator item was the last item in the dictionary
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or if it was 0, 0 is returned.
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<h3 class=fn>type * <a name="operator++"></a>TQIntDictIterator::operator++ ()
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</h3>
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<p> Prefix ++ makes the succeeding item current and returns the new
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current item.
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<p> If the current iterator item was the last item in the dictionary
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or if it was 0, 0 is returned.
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<h3 class=fn>type * <a name="operator+-eq"></a>TQIntDictIterator::operator+= ( uint jump )
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</h3>
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<p> Sets the current item to the item <em>jump</em> positions after the
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current item, and returns a pointer to that item.
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<p> If that item is beyond the last item or if the dictionary is
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empty, it sets the current item to 0 and returns 0.
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<h3 class=fn>type * <a name="toFirst"></a>TQIntDictIterator::toFirst ()
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</h3>
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<p> Sets the current iterator item to point to the first item in the
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dictionary and returns a pointer to the item. The first item
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refers to the first item in the dictionary's arbitrary internal
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ordering. If the dictionary is empty it sets the current item to
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0 and returns 0.
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This file is part of the <a href="index.html">TQt toolkit</a>.
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Copyright © 1995-2007
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<a href="http://www.trolltech.com/">Trolltech</a>. All Rights Reserved.<p><address><hr><div align=center>
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<a href="troll.html">Trolltech</a><td align=center><a href="trademarks.html">Trademarks</a>
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<td align=right><div align=right>TQt 3.3.8</div>
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