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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
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<title>gtkmm 2.4: Gtk::TreeModelColumnRecord Class Reference</title>
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<a class="el" href="namespaceGtk.html">Gtk</a>::<a class="el" href="classGtk_1_1TreeModelColumnRecord.html">TreeModelColumnRecord</a></div>
<h1>Gtk::TreeModelColumnRecord Class Reference<br>
<small>
[<a class="el" href="group__TreeView.html">TreeView Classes</a>]</small>
</h1><!-- doxytag: class="Gtk::TreeModelColumnRecord" -->Inheritance diagram for Gtk::TreeModelColumnRecord:<p><center><img src="classGtk_1_1TreeModelColumnRecord__inherit__graph.png" border="0" usemap="#Gtk_1_1TreeModelColumnRecord__inherit__map" alt="Inheritance graph"></center>
<map name="Gtk_1_1TreeModelColumnRecord__inherit__map">
<area href="classGtk_1_1ComboBoxEntryText_1_1TextModelColumns.html" shape="rect" coords="5,84,312,110" alt="">
<area href="classGtk_1_1ComboBoxText_1_1TextModelColumns.html" shape="rect" coords="336,84,611,110" alt="">
<area href="classGtk_1_1ListViewText_1_1TextModelColumns.html" shape="rect" coords="635,84,891,110" alt="">
</map>
<center><font size="2">[<a href="graph_legend.html">legend</a>]</font></center><a href="classGtk_1_1TreeModelColumnRecord-members.html">List of all members.</a><hr><a name="_details"></a><h2>Detailed Description</h2>
Typedefed as <a class="el" href="classGtk_1_1TreeModel.html#58f10daabaa507b4c2473c9d1b6fa584">TreeModel::ColumnRecord</a>.
<p>
Keeps a record of <a class="el" href="classGtk_1_1TreeModelColumn.html">TreeModelColumns</a>.<p>
ColumnRecord objects are used to setup a new instance of a <a class="el" href="classGtk_1_1TreeModel.html">TreeModel</a> (or rather, a new instance of an implementation of the model, such as <a class="el" href="classGtk_1_1ListStore.html">Gtk::ListStore</a> or <a class="el" href="classGtk_1_1TreeStore.html">Gtk::TreeStore</a>). It is convenient to do that by deriving from <a class="el" href="classGtk_1_1TreeModel.html#58f10daabaa507b4c2473c9d1b6fa584">TreeModel::ColumnRecord</a>: <div class="fragment"><pre class="fragment"> <span class="keyword">class </span>MyModelColumns : <span class="keyword">public</span> Gtk::TreeModel::ColumnRecord
{
<span class="keyword">public</span>:
<a class="code" href="classGtk_1_1TreeModelColumn.html">Gtk::TreeModelColumn<Glib::ustring></a> filename;
<a class="code" href="classGtk_1_1TreeModelColumn.html">Gtk::TreeModelColumn<Glib::ustring></a> description;
<a class="code" href="classGtk_1_1TreeModelColumn.html">Gtk::TreeModelColumn< Glib::RefPtr<Gdk::Pixbuf></a> > thumbnail;
MyModelColumns() { <a class="code" href="classGtk_1_1TreeModelColumnRecord.html#7084fc10fa1abf0d7317558b8462559f">add</a>(filename); <a class="code" href="classGtk_1_1TreeModelColumnRecord.html#7084fc10fa1abf0d7317558b8462559f">add</a>(description); <a class="code" href="classGtk_1_1TreeModelColumnRecord.html#7084fc10fa1abf0d7317558b8462559f">add</a>(thumbnail); }
};
</pre></div><p>
Whether or not you derive your own ColumnRecord, you need to add the <a class="el" href="classGtk_1_1TreeModelColumn.html">TreeModelColumns</a> to the ColumnRecord with the <a class="el" href="classGtk_1_1TreeModelColumnRecord.html#7084fc10fa1abf0d7317558b8462559f">add()</a> method.<p>
A ColumnRecord instance, such as an instance of <code>MyModelColumns</code> should then be passed to <a class="el" href="classGtk_1_1ListStore.html#aa6c530560f66872482a0650739276c5">ListStore::create()</a> or <a class="el" href="classGtk_1_1TreeStore.html#65fc563bfbef2f1a31028cd33ff228c0">TreeStore::create()</a>. The <a class="el" href="classGtk_1_1TreeModelColumn.html">TreeModelColumns</a>, such as the members <code>filename</code>, <code>description</code> and <code>thumbnail</code> can then be used with <a class="el" href="classGtk_1_1TreeRow.html#dbb3433651455b7ecf0a07b7012ecf17">Gtk::TreeRow::operator[]()</a> to specify the column you're interested in.<p>
Neither <a class="el" href="classGtk_1_1TreeModel.html#58f10daabaa507b4c2473c9d1b6fa584">TreeModel::ColumnRecord</a> nor the <a class="el" href="classGtk_1_1TreeModelColumn.html">TreeModelColumns</a> contain any real data -- they merely describe what C++ type is stored in which column of a <a class="el" href="classGtk_1_1TreeModel.html">TreeModel</a>, and save you from having to repeat that type information in several places.<p>
Thus you may use a statically allocated <a class="el" href="classGtk_1_1TreeModel.html#58f10daabaa507b4c2473c9d1b6fa584">TreeModel::ColumnRecord</a> (as long as you make sure it's instantiated after <a class="el" href="classGtk_1_1Main.html">Gtk::Main</a>), even when creating multiple models from it. However, it is very difficult to specify the sequence of allocation of static objects, so this should probably be avoided.
<p>
<table border="0" cellpadding="0" cellspacing="0">
<tr><td></td></tr>
<tr><td colspan="2"><br><h2>Public Member Functions</h2></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classGtk_1_1TreeModelColumnRecord.html#7084fc10fa1abf0d7317558b8462559f">add</a> (<a class="el" href="classGtk_1_1TreeModelColumnBase.html">TreeModelColumnBase</a>& column)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Adds a <a class="el" href="classGtk_1_1TreeModelColumn.html">TreeModelColumn</a> to this record. <a href="#7084fc10fa1abf0d7317558b8462559f"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">unsigned int </td><td class="memItemRight" valign="bottom"><a class="el" href="classGtk_1_1TreeModelColumnRecord.html#68a155c4f306f46985e8ac96f73cb5be">size</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_1TreeModelColumnRecord.html#f0c1c552400694ad0d7e5695f8868d78">TreeModelColumnRecord</a> ()</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">const GType* </td><td class="memItemRight" valign="bottom"><a class="el" href="classGtk_1_1TreeModelColumnRecord.html#b91e162d1826310baeed8859fe3148ff">types</a> () const</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual </td><td class="memItemRight" valign="bottom"><a class="el" href="classGtk_1_1TreeModelColumnRecord.html#3ebe61558fecbcf761ee01f5ec8c0312">~TreeModelColumnRecord</a> ()</td></tr>
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<hr><h2>Constructor & Destructor Documentation</h2>
<a class="anchor" name="f0c1c552400694ad0d7e5695f8868d78"></a><!-- doxytag: member="Gtk::TreeModelColumnRecord::TreeModelColumnRecord" ref="f0c1c552400694ad0d7e5695f8868d78" args="()" -->
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<td class="memname">Gtk::TreeModelColumnRecord::TreeModelColumnRecord </td>
<td>(</td>
<td class="paramname"> </td>
<td> ) </td>
<td width="100%"></td>
</tr>
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<div class="memdoc">
<p>
</div>
</div><p>
<a class="anchor" name="3ebe61558fecbcf761ee01f5ec8c0312"></a><!-- doxytag: member="Gtk::TreeModelColumnRecord::~TreeModelColumnRecord" ref="3ebe61558fecbcf761ee01f5ec8c0312" args="()" -->
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<td class="memname">virtual Gtk::TreeModelColumnRecord::~TreeModelColumnRecord </td>
<td>(</td>
<td class="paramname"> </td>
<td> ) </td>
<td width="100%"><code> [virtual]</code></td>
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<div class="memdoc">
<p>
</div>
</div><p>
<hr><h2>Member Function Documentation</h2>
<a class="anchor" name="7084fc10fa1abf0d7317558b8462559f"></a><!-- doxytag: member="Gtk::TreeModelColumnRecord::add" ref="7084fc10fa1abf0d7317558b8462559f" args="(TreeModelColumnBase &column)" -->
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<td class="memname">void Gtk::TreeModelColumnRecord::add </td>
<td>(</td>
<td class="paramtype"><a class="el" href="classGtk_1_1TreeModelColumnBase.html">TreeModelColumnBase</a>& </td>
<td class="paramname"> <em>column</em> </td>
<td> ) </td>
<td width="100%"></td>
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<p>
Adds a <a class="el" href="classGtk_1_1TreeModelColumn.html">TreeModelColumn</a> to this record.
<p>
<a class="el" href="classGtk_1_1TreeModelColumnRecord.html#7084fc10fa1abf0d7317558b8462559f">add()</a> not only registers the <em>column</em>, but also assigns a column index to it. Once registered, the <a class="el" href="classGtk_1_1TreeModelColumn.html">TreeModelColumn</a> is final, and you're free to pass it around by value.
</div>
</div><p>
<a class="anchor" name="68a155c4f306f46985e8ac96f73cb5be"></a><!-- doxytag: member="Gtk::TreeModelColumnRecord::size" ref="68a155c4f306f46985e8ac96f73cb5be" args="() const" -->
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<td class="memname">unsigned int Gtk::TreeModelColumnRecord::size </td>
<td>(</td>
<td class="paramname"> </td>
<td> ) </td>
<td width="100%"> const</td>
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<div class="memdoc">
<p>
</div>
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<a class="anchor" name="b91e162d1826310baeed8859fe3148ff"></a><!-- doxytag: member="Gtk::TreeModelColumnRecord::types" ref="b91e162d1826310baeed8859fe3148ff" args="() const" -->
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<td class="memname">const GType* Gtk::TreeModelColumnRecord::types </td>
<td>(</td>
<td class="paramname"> </td>
<td> ) </td>
<td width="100%"> const</td>
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<div class="memdoc">
<p>
</div>
</div><p>
<hr>The documentation for this class was generated from the following file:<ul>
<li><a class="el" href="treemodelcolumn_8h.html">treemodelcolumn.h</a></ul>
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