<p><b>@ntrel</b> commented on this pull request.</p>

<hr>

<p>In <a href="https://github.com/geany/geany/pull/2348#discussion_r333984256">src/notebook.c</a>:</p>
<pre style='color:#555'>>  void notebook_init(void)
 {
+       GtkWidget *btn = gtk_button_new_with_label("☰");
</pre>
<p>BTW haven't tried it, but Gtk 3 has a menu button widget that defaults to a down arrow:<br>
<a href="https://developer.gnome.org/gtk3/stable/GtkMenuButton.html" rel="nofollow">https://developer.gnome.org/gtk3/stable/GtkMenuButton.html</a></p>

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