Creates a new GtkTextView widget displaying the buffer @buffer.
One buffer can be shared among many widgets. @buffer may be %NULL
to create a default buffer, in which case this function is equivalent
to [ctor@Gtk.TextView.new]. The text view adds its own reference count
to the buffer; it does not take over an existing reference.
Creates a new GtkTextView widget displaying the buffer @buffer.
One buffer can be shared among many widgets. @buffer may be %NULL to create a default buffer, in which case this function is equivalent to [ctor@Gtk.TextView.new]. The text view adds its own reference count to the buffer; it does not take over an existing reference.