<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>Popup Context Menu</title> <link rel="stylesheet" href="style.css" type="text/css"> <meta name="generator" content="DocBook XSL Stylesheets V1.73.2"> <link rel="start" href="index.html" title="Programming with gtkmm"> <link rel="up" href="ch08.html" title="Chapter 8. The TreeView widget"> <link rel="prev" href="ch08s06.html" title="Drag and Drop"> <link rel="next" href="ch08s08.html" title="Examples"> </head> <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"> <div class="navheader"> <table width="100%" summary="Navigation header"> <tr><th colspan="3" align="center">Popup Context Menu</th></tr> <tr> <td width="20%" align="left"> <a accesskey="p" href="ch08s06.html"><img src="../icons/prev.png" alt="Prev"></a> </td> <th width="60%" align="center">Chapter 8. The TreeView widget</th> <td width="20%" align="right"> <a accesskey="n" href="ch08s08.html"><img src="../icons/next.png" alt="Next"></a> </td> </tr> </table> <hr> </div> <div class="sect1" lang="en"> <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="ch11s03.html" title="Popup Menus">menus chapter</a>. </p> <div class="sect2" lang="en"> <div class="titlepage"><div><div><h3 class="title"> <a name="id2579344"></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="function">connect_nofify()</code> insted of <code class="function">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> </div> </div> <div class="navfooter"> <hr> <table width="100%" summary="Navigation footer"> <tr> <td width="40%" align="left"> <a accesskey="p" href="ch08s06.html"><img src="../icons/prev.png" alt="Prev"></a> </td> <td width="20%" align="center"><a accesskey="u" href="ch08.html"><img src="../icons/up.png" alt="Up"></a></td> <td width="40%" align="right"> <a accesskey="n" href="ch08s08.html"><img src="../icons/next.png" alt="Next"></a> </td> </tr> <tr> <td width="40%" align="left" valign="top">Drag and Drop </td> <td width="20%" align="center"><a accesskey="h" href="index.html"><img src="../icons/home.png" alt="Home"></a></td> <td width="40%" align="right" valign="top"> Examples</td> </tr> </table> </div> </body> </html>