Retrieves the current length of the text in @self.
This is equivalent to getting @self's GtkEntryBuffer and calling [method@Gtk.EntryBuffer.get_length] on it.
the current number of characters in GtkText, or 0 if there are none.
See Implementation
Retrieves the current length of the text in @self.
This is equivalent to getting @self's GtkEntryBuffer and calling [method@Gtk.EntryBuffer.get_length] on it.