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<th width="60%" align="center">Chapter 8. The TreeView widget</th>
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<div class="sect1" title="Popup Context Menu">
<div class="titlepage"><div><div><h2 class="title" style="clear: both">
<a name="sec-treeview-contextmenu"></a>Popup Context Menu</h2></div></div></div>
<p>
Lots of people need to implement right-click context menus for
<code class="classname">TreeView</code>'s so we will explain how to do that here to
save you some time. Apart from one or two points, it's much the same as a
normal context menu, as described in the <a class="link" href="sec-menus-popup.html" title="Popup Menus">menus
chapter</a>.
</p>
<div class="sect2" title="Handling button_press_event">
<div class="titlepage"><div><div><h3 class="title">
<a name="treeview-button-press-event"></a>Handling <code class="literal">button_press_event</code>
</h3></div></div></div>
<p>
To detect a click of the right mouse button, you need to handle the
<code class="literal">button_press_event</code> signal, and check exactly which button
was pressed. Because the <code class="classname">TreeView</code> normally handles this
signal completely, you need to either override the default signal handler in a
derived <code class="classname">TreeView</code> class, or use
<code class="methodname">connect_nofify()</code> instead of <code class="methodname">connect()</code>.
You probably also want to call the default handler before doing anything else,
so that the right-click will cause the row to be selected first.
</p>
<p>This is demonstrated in the Popup Custom Menu example.</p>
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