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<a class="el" href="namespaceGtk.html">Gtk</a>::<a class="el" href="classGtk_1_1TreeIter.html">TreeIter</a></div>
<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" -->Inheritance diagram for Gtk::TreeIter:<p><center><img src="classGtk_1_1TreeIter__inherit__graph.png" border="0" usemap="#Gtk_1_1TreeIter__inherit__map" alt="Inheritance graph"></center>
<map name="Gtk_1_1TreeIter__inherit__map">
<area href="classGtk_1_1TreeNodeChildren.html" shape="rect" coords="5,162,168,188" alt="">
<area href="classGtk_1_1TreeRow.html" shape="rect" coords="192,162,296,188" alt="">
<area href="classGtk_1_1TreeIterBase.html" shape="rect" coords="100,7,231,34" alt="">
</map>
<center><font size="2">[<a href="graph_legend.html">legend</a>]</font></center><a href="classGtk_1_1TreeIter-members.html">List of all members.</a><hr><a name="_details"></a><h2>Detailed Description</h2>
A <a class="el" href="classGtk_1_1TreeModel.html#754e74cd833ff30e729f9b8d7daf4d8c">Gtk::TreeModel::iterator</a> is a reference to a specific node on a specific model.
<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>
One can convert a path to an iterator by calling <a class="el" href="classGtk_1_1TreeModel.html#ebaa795e4920ddc0ec5e39c9f4fbc660">Gtk::TreeModel::get_iter()</a>.<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">Gtk::TextBuffer</a>. The model interface defines a set of operations using them for navigating the model.<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">Gtk::ListStore</a>).<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#gg8db2110062643eb26461ec23b63e2cb2f6180b637675678b5d9d6ee16e0596ab">Gtk::TREE_MODEL_ITERS_PERSIST</a> flag was added to indicate this behaviour - see <a class="el" href="classGtk_1_1TreeModel.html#2c809771d4185e975dc9ccc176104c16">Gtk::TreeModel::get_flags()</a>.<p>
Typedefed as <a class="el" href="classGtk_1_1TreeModel.html#754e74cd833ff30e729f9b8d7daf4d8c">Gtk::TreeModel::iterator</a>. The <a class="el" href="classGtk_1_1TreeModel.html">Gtk::TreeModel</a> iterator.
<p>
<table border="0" cellpadding="0" cellspacing="0">
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<tr><td colspan="2"><br><h2>Public Types</h2></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">typedef int </td><td class="memItemRight" valign="bottom"><a class="el" href="classGtk_1_1TreeIter.html#b55da0493213816959f624a0d3747771">difference_type</a></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">typedef std::bidirectional_iterator_tag </td><td class="memItemRight" valign="bottom"><a class="el" href="classGtk_1_1TreeIter.html#d48e11234a1ef30a56fbf64d944232e1">iterator_category</a></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">typedef const <a class="el" href="classGtk_1_1TreeRow.html">Gtk::TreeRow</a>* </td><td class="memItemRight" valign="bottom"><a class="el" href="classGtk_1_1TreeIter.html#5ca69865eaeb38e6c56539964411307b">pointer</a></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">typedef const <a class="el" href="classGtk_1_1TreeRow.html">Gtk::TreeRow</a>& </td><td class="memItemRight" valign="bottom"><a class="el" href="classGtk_1_1TreeIter.html#5011b05221c38181c734b44fa8c0d83f">reference</a></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">typedef <a class="el" href="classGtk_1_1TreeRow.html">Gtk::TreeRow</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="classGtk_1_1TreeIter.html#d6d804b4744a31a96083edd31639b82b">value_type</a></td></tr>
<tr><td colspan="2"><br><h2>Public Member Functions</h2></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="classGtk_1_1TreeIter.html#828bdd292494f5e04862a3ca13b003fb">equal</a> (const <a class="el" href="classGtk_1_1TreeIter.html">TreeIter</a>& other) const</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="classGtk_1_1TreeIter.html#b30be32334ea5387ed72fba23e7e441c">get_stamp</a> () const</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">This is only useful when implementing a custom <a class="el" href="classGtk_1_1TreeModel.html">Gtk::TreeModel</a> class. <a href="#b30be32334ea5387ed72fba23e7e441c"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="el" href="classGtk_1_1TreeRow.html">reference</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="classGtk_1_1TreeIter.html#bfdab52351d87cca699a5b1533b52306">operator*</a> () const</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classGtk_1_1TreeIter.html#cdb8c0036a9eadb5d8965016b8c8ec45">operator bool</a> () const</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Discover whether the iterator is valid, and not equal to end(). <a href="#cdb8c0036a9eadb5d8965016b8c8ec45"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">const <a class="el" href="classGtk_1_1TreeIter.html">TreeIter</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="classGtk_1_1TreeIter.html#46e9bcc4291a436b8b70992c45762372">operator++</a> (int)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="el" href="classGtk_1_1TreeIter.html">TreeIter</a>& </td><td class="memItemRight" valign="bottom"><a class="el" href="classGtk_1_1TreeIter.html#41602c61e46dd41587f4b56db46d325e">operator++</a> ()</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">const <a class="el" href="classGtk_1_1TreeIter.html">TreeIter</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="classGtk_1_1TreeIter.html#b1070ff322a770f443ddf625d0ee0391">operator--</a> (int)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Please note that this is very slow compared to <a class="el" href="classGtk_1_1TreeIter.html#41602c61e46dd41587f4b56db46d325e">operator++()</a>. <a href="#b1070ff322a770f443ddf625d0ee0391"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="el" href="classGtk_1_1TreeIter.html">TreeIter</a>& </td><td class="memItemRight" valign="bottom"><a class="el" href="classGtk_1_1TreeIter.html#fed3b959fa29d90b57e417b88392e335">operator--</a> ()</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Please note that this is very slow compared to <a class="el" href="classGtk_1_1TreeIter.html#41602c61e46dd41587f4b56db46d325e">operator++()</a>. <a href="#fed3b959fa29d90b57e417b88392e335"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="el" href="classGtk_1_1TreeRow.html">pointer</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="classGtk_1_1TreeIter.html#90ed0cc2d4518664f84cf0ed4edba3fd">operator-></a> () const</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classGtk_1_1TreeIter.html#f30ad8f5e3754851f52ade6aa0714476">set_stamp</a> (int stamp)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">This is only useful when implementing a custom <a class="el" href="classGtk_1_1TreeModel.html">Gtk::TreeModel</a> class. <a href="#f30ad8f5e3754851f52ade6aa0714476"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classGtk_1_1TreeIter.html#5f419a854ffb2ddefa224b5afd70657d">TreeIter</a> ()</td></tr>
<tr><td colspan="2"><br><h2>Related Functions</h2></td></tr>
<tr><td colspan="2">(Note that these are not member functions.) <br><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="classGtk_1_1TreeIter.html#8b0a2d89e01de99226fce73c9034d2c7">operator!=</a> (const <a class="el" href="classGtk_1_1TreeIter.html">TreeIter</a>& lhs, const <a class="el" href="classGtk_1_1TreeIter.html">TreeIter</a>& rhs)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="classGtk_1_1TreeIter.html#27ec6dbc88cf8ed080ebf397226f25ad">operator==</a> (const <a class="el" href="classGtk_1_1TreeIter.html">TreeIter</a>& lhs, const <a class="el" href="classGtk_1_1TreeIter.html">TreeIter</a>& rhs)</td></tr>
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<hr><h2>Member Typedef Documentation</h2>
<a class="anchor" name="b55da0493213816959f624a0d3747771"></a><!-- doxytag: member="Gtk::TreeIter::difference_type" ref="b55da0493213816959f624a0d3747771" args="" -->
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<td class="memname">typedef int <a class="el" href="classGtk_1_1TreeIter.html#b55da0493213816959f624a0d3747771">Gtk::TreeIter::difference_type</a> </td>
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Reimplemented in <a class="el" href="classGtk_1_1TreeNodeChildren.html#f369358b71331b358b7c86b0cf7f6703">Gtk::TreeNodeChildren</a>.
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<a class="anchor" name="d48e11234a1ef30a56fbf64d944232e1"></a><!-- doxytag: member="Gtk::TreeIter::iterator_category" ref="d48e11234a1ef30a56fbf64d944232e1" args="" -->
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<td class="memname">typedef std::bidirectional_iterator_tag <a class="el" href="classGtk_1_1TreeIter.html#d48e11234a1ef30a56fbf64d944232e1">Gtk::TreeIter::iterator_category</a> </td>
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<a class="anchor" name="5ca69865eaeb38e6c56539964411307b"></a><!-- doxytag: member="Gtk::TreeIter::pointer" ref="5ca69865eaeb38e6c56539964411307b" 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" name="5011b05221c38181c734b44fa8c0d83f"></a><!-- doxytag: member="Gtk::TreeIter::reference" ref="5011b05221c38181c734b44fa8c0d83f" 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::reference</a> </td>
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<a class="anchor" name="d6d804b4744a31a96083edd31639b82b"></a><!-- doxytag: member="Gtk::TreeIter::value_type" ref="d6d804b4744a31a96083edd31639b82b" 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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Reimplemented in <a class="el" href="classGtk_1_1TreeNodeChildren.html#67c2eca3018e0121026bee8610c09171">Gtk::TreeNodeChildren</a>.
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<hr><h2>Constructor & Destructor Documentation</h2>
<a class="anchor" name="5f419a854ffb2ddefa224b5afd70657d"></a><!-- doxytag: member="Gtk::TreeIter::TreeIter" ref="5f419a854ffb2ddefa224b5afd70657d" args="()" -->
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<td class="memname">Gtk::TreeIter::TreeIter </td>
<td>(</td>
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<hr><h2>Member Function Documentation</h2>
<a class="anchor" name="828bdd292494f5e04862a3ca13b003fb"></a><!-- doxytag: member="Gtk::TreeIter::equal" ref="828bdd292494f5e04862a3ca13b003fb" args="(const TreeIter &other) const" -->
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<td class="memname">bool Gtk::TreeIter::equal </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="classGtk_1_1TreeIter.html">TreeIter</a>& </td>
<td class="paramname"> <em>other</em> </td>
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<td width="100%"> const</td>
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<a class="anchor" name="b30be32334ea5387ed72fba23e7e441c"></a><!-- doxytag: member="Gtk::TreeIter::get_stamp" ref="b30be32334ea5387ed72fba23e7e441c" args="() const" -->
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<td class="memname">int Gtk::TreeIter::get_stamp </td>
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This is only useful when implementing a custom <a class="el" href="classGtk_1_1TreeModel.html">Gtk::TreeModel</a> class.
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Compare the iterator's stamp with your model's stamp to discover whether it is valid. <dl class="see" compact><dt><b>See also:</b></dt><dd><a class="el" href="classGtk_1_1TreeIter.html#f30ad8f5e3754851f52ade6aa0714476">set_stamp()</a>. </dd></dl>
<dl class="return" compact><dt><b>Returns:</b></dt><dd>The iterator's stamp. </dd></dl>
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<a class="anchor" name="bfdab52351d87cca699a5b1533b52306"></a><!-- doxytag: member="Gtk::TreeIter::operator *" ref="bfdab52351d87cca699a5b1533b52306" 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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<td width="100%"> const<code> [inline]</code></td>
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<a class="anchor" name="cdb8c0036a9eadb5d8965016b8c8ec45"></a><!-- doxytag: member="Gtk::TreeIter::operator bool" ref="cdb8c0036a9eadb5d8965016b8c8ec45" args="() const" -->
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<td class="memname">Gtk::TreeIter::operator bool </td>
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Discover whether the iterator is valid, and not equal to end().
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Reimplemented in <a class="el" href="classGtk_1_1TreeRow.html#16daeb4561646f628d9ee3c7234cc7db">Gtk::TreeRow</a>, and <a class="el" href="classGtk_1_1TreeNodeChildren.html#f950864cb062d737ea35d4e0fe17f13d">Gtk::TreeNodeChildren</a>.
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<a class="anchor" name="46e9bcc4291a436b8b70992c45762372"></a><!-- doxytag: member="Gtk::TreeIter::operator++" ref="46e9bcc4291a436b8b70992c45762372" 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" name="41602c61e46dd41587f4b56db46d325e"></a><!-- doxytag: member="Gtk::TreeIter::operator++" ref="41602c61e46dd41587f4b56db46d325e" args="()" -->
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<td class="memname"><a class="el" href="classGtk_1_1TreeIter.html">TreeIter</a>& Gtk::TreeIter::operator++ </td>
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<a class="anchor" name="b1070ff322a770f443ddf625d0ee0391"></a><!-- doxytag: member="Gtk::TreeIter::operator--" ref="b1070ff322a770f443ddf625d0ee0391" 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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Please note that this is very slow compared to <a class="el" href="classGtk_1_1TreeIter.html#41602c61e46dd41587f4b56db46d325e">operator++()</a>.
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<a class="anchor" name="fed3b959fa29d90b57e417b88392e335"></a><!-- doxytag: member="Gtk::TreeIter::operator--" ref="fed3b959fa29d90b57e417b88392e335" args="()" -->
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<td class="memname"><a class="el" href="classGtk_1_1TreeIter.html">TreeIter</a>& Gtk::TreeIter::operator-- </td>
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Please note that this is very slow compared to <a class="el" href="classGtk_1_1TreeIter.html#41602c61e46dd41587f4b56db46d325e">operator++()</a>.
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<a class="anchor" name="90ed0cc2d4518664f84cf0ed4edba3fd"></a><!-- doxytag: member="Gtk::TreeIter::operator->" ref="90ed0cc2d4518664f84cf0ed4edba3fd" args="() const" -->
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<td class="memname"><a class="el" href="classGtk_1_1TreeRow.html">pointer</a> Gtk::TreeIter::operator-> </td>
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<a class="anchor" name="f30ad8f5e3754851f52ade6aa0714476"></a><!-- doxytag: member="Gtk::TreeIter::set_stamp" ref="f30ad8f5e3754851f52ade6aa0714476" args="(int stamp)" -->
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<td class="memname">void Gtk::TreeIter::set_stamp </td>
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This is only useful when implementing a custom <a class="el" href="classGtk_1_1TreeModel.html">Gtk::TreeModel</a> class.
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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.
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<hr><h2>Friends And Related Function Documentation</h2>
<a class="anchor" name="8b0a2d89e01de99226fce73c9034d2c7"></a><!-- doxytag: member="Gtk::TreeIter::operator!=" ref="8b0a2d89e01de99226fce73c9034d2c7" args="(const TreeIter &lhs, const TreeIter &rhs)" -->
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<td class="memname">bool operator!= </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="classGtk_1_1TreeIter.html">TreeIter</a>& </td>
<td class="paramname"> <em>lhs</em>, </td>
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<td class="paramtype">const <a class="el" href="classGtk_1_1TreeIter.html">TreeIter</a>& </td>
<td class="paramname"> <em>rhs</em></td><td> </td>
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<td>)</td>
<td></td><td></td><td width="100%"><code> [related]</code></td>
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<a class="anchor" name="27ec6dbc88cf8ed080ebf397226f25ad"></a><!-- doxytag: member="Gtk::TreeIter::operator==" ref="27ec6dbc88cf8ed080ebf397226f25ad" args="(const TreeIter &lhs, const TreeIter &rhs)" -->
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<td class="memname">bool operator== </td>
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<td class="paramtype">const <a class="el" href="classGtk_1_1TreeIter.html">TreeIter</a>& </td>
<td class="paramname"> <em>lhs</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">const <a class="el" href="classGtk_1_1TreeIter.html">TreeIter</a>& </td>
<td class="paramname"> <em>rhs</em></td><td> </td>
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<td>)</td>
<td></td><td></td><td width="100%"><code> [related]</code></td>
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<hr>The documentation for this class was generated from the following file:<ul>
<li><a class="el" href="treeiter_8h.html">treeiter.h</a></ul>
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