Why does creating a new tab give me 'TypeError: Expected Gtk.Widget, but got GObjectMeta'?

Question

def on_btn_new_subject_activate(self, widget):
    self.subjects.append_page(Gtk.TextView(), "Testing")

I am trying to create a new tab on a text area but I whenever the signal is called by the event (I click the button), this happens:

TypeError: Expected Gtk.Widget, but got GObjectMeta

I have also tried variations on this like "Gtk.GtkTextView()" and "GtkTextView()" with no success

What am I supposed to be using to get a text area in that tab?

Answer 1

I think you must initialize Gtk.TextView() before use.... I was also facing same problem 2 days before.... Just check following code

        self.textview = Gtk.TextView()
        self.textbuffer = self.textview.get_buffer()
        self.textbuffer.set_text("This is some text inside of a Gtk.TextView. "
            + "Select text and click one of the buttons 'bold', 'italic', "
            + "or 'underline' to modify the text accordingly.")
        mywindows.add(self.textview)

Refer: http://python-gtk-3-tutorial.readthedocs.org/en/latest/textview.html