Re: Determining widget type

Kjell Ahlstedt via gtkmm-list <[email protected]> Sat, 28 Mar 2020 10:57:36 +0100

Newsgroups	gmane.comp.gnome.gtkmm
Message-ID	<[email protected]>

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().
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