This is including any embedded underlines indicating mnemonics and
Pango markup, as set by [method@Gtk.Expander.set_label]. If the label
text has not been set the return value will be %NULL. This will be the
case if you create an empty button with gtk_button_new() to use as a
container.
Fetches the text from a label widget.
This is including any embedded underlines indicating mnemonics and Pango markup, as set by [method@Gtk.Expander.set_label]. If the label text has not been set the return value will be %NULL. This will be the case if you create an empty button with gtk_button_new() to use as a container.