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<div class="sect1" title="Popup Menus">
<div class="titlepage"><div><div><h2 class="title" style="clear: both">
<a name="sec-menus-popup"></a>Popup Menus</h2></div></div></div>
<p>
<code class="classname">Menus</code> are normally just added to a window, but they can
also be displayed temporarily as the result of a mouse button click. For
instance, a context menu might be displayed when the user clicks their right
mouse button.
</p>
<p>The UI layout for a popup menu should use the <code class="literal">popup</code> node. For instance:
</p>
<pre class="programlisting">Glib::ustring ui_info =
"<ui>"
" <popup name='PopupMenu'>"
" <menuitem action='ContextEdit'/>"
" <menuitem action='ContextProcess'/>"
" <menuitem action='ContextRemove'/>"
" </popup>"
"</ui>";
m_refUIManager->add_ui_from_string(ui_info);</pre>
<p>
To show the popup menu, use <code class="classname">Gtk::Menu</code>'s
<code class="methodname">popup()</code> method, providing the button identifier and the
time of activation, as provided by the <code class="literal">button_press_event</code>
signal, which you will need to handle anyway. For instance:
</p>
<pre class="programlisting">bool ExampleWindow::on_button_press_event(GdkEventButton* event)
{
if( (event->type == GDK_BUTTON_PRESS) &&
(event->button == 3) )
{
m_Menu_Popup->popup(event->button, event->time);
return true; //It has been handled.
}
else
return false;
}</pre>
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distrib
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Mandriva
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2010.0
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i586
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media
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contrib-release
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by-pkgid
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345aa895e80053137c21f8693106c3a0
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files
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163
