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<h1>Gtk::TreeIter Class Reference<br/>
<small>
[<a class="el" href="group__TreeView.html">TreeView Classes</a>]</small>
</h1><!-- doxytag: class="Gtk::TreeIter" --><!-- doxytag: inherits="Gtk::TreeIterBase" -->
<p>A <a class="el" href="classGtk_1_1TreeModel.html#a754e74cd833ff30e729f9b8d7daf4d8c">Gtk::TreeModel::iterator</a> is a reference to a specific node on a specific model. <a href="#_details">More...</a></p>

<p>Inherits <a class="el" href="classGtk_1_1TreeIterBase.html">Gtk::TreeIterBase</a>.</p>

<p>Inherited by <a class="el" href="classGtk_1_1TreeNodeChildren.html">Gtk::TreeNodeChildren</a>, and <a class="el" href="classGtk_1_1TreeRow.html">Gtk::TreeRow</a>.</p>
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Collaboration diagram for Gtk::TreeIter:</div>
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<p><a href="classGtk_1_1TreeIter-members.html">List of all members.</a></p>
<table border="0" cellpadding="0" cellspacing="0">
<tr><td colspan="2"><h2>Public Types</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">typedef <br class="typebreak"/>
<a class="elRef" href="http://gcc.gnu.org/onlinedocs/libstdc++/latest-doxygen/a00400.html">std::bidirectional_iterator_tag</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classGtk_1_1TreeIter.html#ad48e11234a1ef30a56fbf64d944232e1">iterator_category</a></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">typedef <a class="el" href="classGtk_1_1TreeRow.html">Gtk::TreeRow</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classGtk_1_1TreeIter.html#ad6d804b4744a31a96083edd31639b82b">value_type</a></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">typedef int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classGtk_1_1TreeIter.html#ab55da0493213816959f624a0d3747771">difference_type</a></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">typedef const <a class="el" href="classGtk_1_1TreeRow.html">Gtk::TreeRow</a>&amp;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classGtk_1_1TreeIter.html#a5011b05221c38181c734b44fa8c0d83f">reference</a></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">typedef const <a class="el" href="classGtk_1_1TreeRow.html">Gtk::TreeRow</a>*&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classGtk_1_1TreeIter.html#a5ca69865eaeb38e6c56539964411307b">pointer</a></td></tr>
<tr><td colspan="2"><h2>Public Member Functions</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classGtk_1_1TreeIter.html#a5f419a854ffb2ddefa224b5afd70657d">TreeIter</a> ()</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="classGtk_1_1TreeIter.html">TreeIter</a>&amp;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classGtk_1_1TreeIter.html#a41602c61e46dd41587f4b56db46d325e">operator++</a> ()</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">const <a class="el" href="classGtk_1_1TreeIter.html">TreeIter</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classGtk_1_1TreeIter.html#a46e9bcc4291a436b8b70992c45762372">operator++</a> (int)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="classGtk_1_1TreeIter.html">TreeIter</a>&amp;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classGtk_1_1TreeIter.html#afed3b959fa29d90b57e417b88392e335">operator--</a> ()</td></tr>
<tr><td class="mdescLeft">&#160;</td><td class="mdescRight">Please note that this is very slow compared to <a class="el" href="classGtk_1_1TreeIter.html#a41602c61e46dd41587f4b56db46d325e">operator++()</a>. <a href="#afed3b959fa29d90b57e417b88392e335"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">const <a class="el" href="classGtk_1_1TreeIter.html">TreeIter</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classGtk_1_1TreeIter.html#ab1070ff322a770f443ddf625d0ee0391">operator--</a> (int)</td></tr>
<tr><td class="mdescLeft">&#160;</td><td class="mdescRight">Please note that this is very slow compared to <a class="el" href="classGtk_1_1TreeIter.html#a41602c61e46dd41587f4b56db46d325e">operator++()</a>. <a href="#ab1070ff322a770f443ddf625d0ee0391"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="classGtk_1_1TreeRow.html">reference</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classGtk_1_1TreeIter.html#a8719cade1c5047b221f6cefa738547c0">operator*</a> () const </td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="classGtk_1_1TreeRow.html">pointer</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classGtk_1_1TreeIter.html#a1daa2dd6654698e001ef8ff8b784b885">operator-&gt;</a> () const </td></tr>
<tr><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classGtk_1_1TreeIter.html#a644adfe72d43e87d451e3be9b9c36648">equal</a> (const <a class="el" href="classGtk_1_1TreeIter.html">TreeIter</a>&amp; other) const </td></tr>
<tr><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classGtk_1_1TreeIter.html#a937201ba3ea794fc6442d5069967a214">operator bool</a> () const </td></tr>
<tr><td class="mdescLeft">&#160;</td><td class="mdescRight">Discover whether the iterator is valid, and not equal to end(). <a href="#a937201ba3ea794fc6442d5069967a214"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classGtk_1_1TreeIter.html#ab0c7c66a642182e48c087fd02562b73f">get_stamp</a> () const </td></tr>
<tr><td class="mdescLeft">&#160;</td><td class="mdescRight">This is only useful when implementing a custom <a class="el" href="classGtk_1_1TreeModel.html" title="This class defines a generic tree interface for use by the Gtk::TreeView widget.">Gtk::TreeModel</a> class. <a href="#ab0c7c66a642182e48c087fd02562b73f"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classGtk_1_1TreeIter.html#af30ad8f5e3754851f52ade6aa0714476">set_stamp</a> (int stamp)</td></tr>
<tr><td class="mdescLeft">&#160;</td><td class="mdescRight">This is only useful when implementing a custom <a class="el" href="classGtk_1_1TreeModel.html" title="This class defines a generic tree interface for use by the Gtk::TreeView widget.">Gtk::TreeModel</a> class. <a href="#af30ad8f5e3754851f52ade6aa0714476"></a><br/></td></tr>
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<hr/><a name="_details"></a><h2>Detailed Description</h2>
<p>A <a class="el" href="classGtk_1_1TreeModel.html#a754e74cd833ff30e729f9b8d7daf4d8c">Gtk::TreeModel::iterator</a> is a reference to a specific node on a specific model. </p>
<p>It is a generic structure with an integer and three generic pointers. These are filled in by the model in a model-specific way.</p>
<p>One can convert a path to an iterator by calling <a class="el" href="classGtk_1_1TreeModel.html#aebaa795e4920ddc0ec5e39c9f4fbc660" title="Returns a valid iterator pointing to path.">Gtk::TreeModel::get_iter()</a>.</p>
<p>These iterators are the primary way of accessing a model and are similar to the iterators used by <a class="el" href="classGtk_1_1TextBuffer.html" title="Multi-line attributed text that can be displayed by one or more Gtk::TextView widgets...">Gtk::TextBuffer</a>. The model interface defines a set of operations using them for navigating the model.</p>
<p>The lifecycle of an iterator can be a little confusing at first. Iterators are expected to always be valid for as long as the model is unchanged (and doesn't emit a signal). Additionally, some models guarantee that an iterator is valid for as long as the node it refers to is valid (most notably the <a class="el" href="classGtk_1_1TreeStore.html">Gtk::TreeStore</a> and <a class="el" href="classGtk_1_1ListStore.html" title="Thist is a list model for use with a Gtk::TreeView widget.">Gtk::ListStore</a>).</p>
<p>Although generally uninteresting, as one always has to allow for the case where iterators do not persist beyond a signal, some very important performance enhancements were made in the sort model. As a result, the <a class="el" href="group__gtkmmEnums.html#gga8db2110062643eb26461ec23b63e2cb2af6180b637675678b5d9d6ee16e0596ab">Gtk::TREE_MODEL_ITERS_PERSIST</a> flag was added to indicate this behaviour - see <a class="el" href="classGtk_1_1TreeModel.html#af4b5de9c0bd5a79ef06fcda4fc415ef8" title="Returns a set of flags supported by this interface.">Gtk::TreeModel::get_flags()</a>.</p>
<p>Typedefed as <a class="el" href="classGtk_1_1TreeModel.html#a754e74cd833ff30e729f9b8d7daf4d8c">Gtk::TreeModel::iterator</a>. The <a class="el" href="classGtk_1_1TreeModel.html" title="This class defines a generic tree interface for use by the Gtk::TreeView widget.">Gtk::TreeModel</a> iterator. </p>
<hr/><h2>Member Typedef Documentation</h2>
<a class="anchor" id="ab55da0493213816959f624a0d3747771"></a><!-- doxytag: member="Gtk::TreeIter::difference_type" ref="ab55da0493213816959f624a0d3747771" args="" -->
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          <td class="memname">typedef int <a class="el" href="classGtk_1_1TreeIter.html#ab55da0493213816959f624a0d3747771">Gtk::TreeIter::difference_type</a></td>
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<p>Reimplemented in <a class="el" href="classGtk_1_1TreeNodeChildren.html#af369358b71331b358b7c86b0cf7f6703">Gtk::TreeNodeChildren</a>.</p>

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<a class="anchor" id="ad48e11234a1ef30a56fbf64d944232e1"></a><!-- doxytag: member="Gtk::TreeIter::iterator_category" ref="ad48e11234a1ef30a56fbf64d944232e1" args="" -->
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          <td class="memname">typedef <a class="elRef" href="http://gcc.gnu.org/onlinedocs/libstdc++/latest-doxygen/a00400.html">std::bidirectional_iterator_tag</a> <a class="elRef" href="http://gcc.gnu.org/onlinedocs/libstdc++/latest-doxygen/a00400.html">Gtk::TreeIter::iterator_category</a></td>
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<a class="anchor" id="a5ca69865eaeb38e6c56539964411307b"></a><!-- doxytag: member="Gtk::TreeIter::pointer" ref="a5ca69865eaeb38e6c56539964411307b" args="" -->
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          <td class="memname">typedef const <a class="el" href="classGtk_1_1TreeRow.html">Gtk::TreeRow</a>* <a class="el" href="classGtk_1_1TreeRow.html">Gtk::TreeIter::pointer</a></td>
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<a class="anchor" id="a5011b05221c38181c734b44fa8c0d83f"></a><!-- doxytag: member="Gtk::TreeIter::reference" ref="a5011b05221c38181c734b44fa8c0d83f" args="" -->
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          <td class="memname">typedef const <a class="el" href="classGtk_1_1TreeRow.html">Gtk::TreeRow</a>&amp; <a class="el" href="classGtk_1_1TreeRow.html">Gtk::TreeIter::reference</a></td>
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<a class="anchor" id="ad6d804b4744a31a96083edd31639b82b"></a><!-- doxytag: member="Gtk::TreeIter::value_type" ref="ad6d804b4744a31a96083edd31639b82b" args="" -->
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          <td class="memname">typedef <a class="el" href="classGtk_1_1TreeRow.html">Gtk::TreeRow</a> <a class="el" href="classGtk_1_1TreeRow.html">Gtk::TreeIter::value_type</a></td>
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<p>Reimplemented in <a class="el" href="classGtk_1_1TreeNodeChildren.html#a67c2eca3018e0121026bee8610c09171">Gtk::TreeNodeChildren</a>.</p>

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<hr/><h2>Constructor &amp; Destructor Documentation</h2>
<a class="anchor" id="a5f419a854ffb2ddefa224b5afd70657d"></a><!-- doxytag: member="Gtk::TreeIter::TreeIter" ref="a5f419a854ffb2ddefa224b5afd70657d" args="()" -->
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          <td class="memname">Gtk::TreeIter::TreeIter </td>
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<hr/><h2>Member Function Documentation</h2>
<a class="anchor" id="a644adfe72d43e87d451e3be9b9c36648"></a><!-- doxytag: member="Gtk::TreeIter::equal" ref="a644adfe72d43e87d451e3be9b9c36648" args="(const TreeIter &amp;other) const " -->
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          <td class="paramname"> <em>other</em></td>
          <td>&#160;)&#160;</td>
          <td> const</td>
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<a class="anchor" id="ab0c7c66a642182e48c087fd02562b73f"></a><!-- doxytag: member="Gtk::TreeIter::get_stamp" ref="ab0c7c66a642182e48c087fd02562b73f" args="() const " -->
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          <td class="memname">int Gtk::TreeIter::get_stamp </td>
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          <td> const</td>
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<p>This is only useful when implementing a custom <a class="el" href="classGtk_1_1TreeModel.html" title="This class defines a generic tree interface for use by the Gtk::TreeView widget.">Gtk::TreeModel</a> class. </p>
<p>Compare the iterator's stamp with your model's stamp to discover whether it is valid. </p>
<dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="classGtk_1_1TreeIter.html#af30ad8f5e3754851f52ade6aa0714476" title="This is only useful when implementing a custom Gtk::TreeModel class.">set_stamp()</a>. </dd></dl>
<dl class="return"><dt><b>Returns:</b></dt><dd>The iterator's stamp. </dd></dl>

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<a class="anchor" id="a937201ba3ea794fc6442d5069967a214"></a><!-- doxytag: member="Gtk::TreeIter::operator bool" ref="a937201ba3ea794fc6442d5069967a214" args="() const " -->
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<p>Discover whether the iterator is valid, and not equal to end(). </p>

<p>Reimplemented in <a class="el" href="classGtk_1_1TreeRow.html#a256d9c1def321f1968c2f01299781e14">Gtk::TreeRow</a>, and <a class="el" href="classGtk_1_1TreeNodeChildren.html#acd5ff0fa0208b643ab79976f7ac7c1fa">Gtk::TreeNodeChildren</a>.</p>

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<a class="anchor" id="a8719cade1c5047b221f6cefa738547c0"></a><!-- doxytag: member="Gtk::TreeIter::operator*" ref="a8719cade1c5047b221f6cefa738547c0" args="() const " -->
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          <td class="memname"><a class="el" href="classGtk_1_1TreeRow.html">reference</a> Gtk::TreeIter::operator* </td>
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<a class="anchor" id="a46e9bcc4291a436b8b70992c45762372"></a><!-- doxytag: member="Gtk::TreeIter::operator++" ref="a46e9bcc4291a436b8b70992c45762372" args="(int)" -->
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          <td class="memname">const <a class="el" href="classGtk_1_1TreeIter.html">TreeIter</a> Gtk::TreeIter::operator++ </td>
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<a class="anchor" id="a41602c61e46dd41587f4b56db46d325e"></a><!-- doxytag: member="Gtk::TreeIter::operator++" ref="a41602c61e46dd41587f4b56db46d325e" args="()" -->
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          <td class="memname"><a class="el" href="classGtk_1_1TreeIter.html">TreeIter</a>&amp; Gtk::TreeIter::operator++ </td>
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<a class="anchor" id="ab1070ff322a770f443ddf625d0ee0391"></a><!-- doxytag: member="Gtk::TreeIter::operator&#45;&#45;" ref="ab1070ff322a770f443ddf625d0ee0391" args="(int)" -->
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          <td class="memname">const <a class="el" href="classGtk_1_1TreeIter.html">TreeIter</a> Gtk::TreeIter::operator-- </td>
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<p>Please note that this is very slow compared to <a class="el" href="classGtk_1_1TreeIter.html#a41602c61e46dd41587f4b56db46d325e">operator++()</a>. </p>

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<a class="anchor" id="afed3b959fa29d90b57e417b88392e335"></a><!-- doxytag: member="Gtk::TreeIter::operator&#45;&#45;" ref="afed3b959fa29d90b57e417b88392e335" args="()" -->
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          <td class="memname"><a class="el" href="classGtk_1_1TreeIter.html">TreeIter</a>&amp; Gtk::TreeIter::operator-- </td>
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<p>Please note that this is very slow compared to <a class="el" href="classGtk_1_1TreeIter.html#a41602c61e46dd41587f4b56db46d325e">operator++()</a>. </p>

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<a class="anchor" id="a1daa2dd6654698e001ef8ff8b784b885"></a><!-- doxytag: member="Gtk::TreeIter::operator&#45;&gt;" ref="a1daa2dd6654698e001ef8ff8b784b885" args="() const " -->
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          <td class="memname"><a class="el" href="classGtk_1_1TreeRow.html">pointer</a> Gtk::TreeIter::operator-&gt; </td>
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<a class="anchor" id="af30ad8f5e3754851f52ade6aa0714476"></a><!-- doxytag: member="Gtk::TreeIter::set_stamp" ref="af30ad8f5e3754851f52ade6aa0714476" args="(int stamp)" -->
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          <td class="memname">void Gtk::TreeIter::set_stamp </td>
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          <td class="paramname"> <em>stamp</em></td>
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<p>This is only useful when implementing a custom <a class="el" href="classGtk_1_1TreeModel.html" title="This class defines a generic tree interface for use by the Gtk::TreeView widget.">Gtk::TreeModel</a> class. </p>
<p>Set the stamp to be equal to your model's stamp, to mark the iterator as valid. When your model's structure changes, you should increment your model's stamp to mark all older iterators as invalid. They will be recognised as invalid because they will then have an incorrect stamp. </p>

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<hr/>The documentation for this class was generated from the following file:<ul>
<li>gtkmm/treeiter.h</li>
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<hr size="1"/><address style="text-align: right;"><small>Generated on Tue May 4 13:22:05 2010 for gtkmm by&#160;
<a href="http://www.doxygen.org/index.html">
<img class="footer" src="doxygen.png" alt="doxygen"/></a> 1.6.1 </small></address>
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