Re: Determining widget type

[Kjell Ahlstedt <kjellahlstedt gmail com>]

On 2020-03-27 16:54, Phil Wolff via gtkmm-list wrote:
> I want to modify the primary message widget so I can select and copy 
> the text.
>
>     Gtk::Box* pBox = pDialog->get_content_area ();
>     std::vector<Gtk::Widget* > v = pBox->get_children ();
>     Glib::ustring str = ((Gtk::Label*)v[0])->get_label ();
>
> This fails: Gtk-CRITICAL: 08:51:12.080: gtk_label_get_label: 
> assertion 'GTK_IS_LABEL (label)' failed
>
> So the primary message widget isn't a Gtk::Label. How do I determine 
> what it is?
Is your dialog a MessageDialog? If it is, use get_message_area() instead 
of get_content_area().