Fetches the text from the label of the button, as set by
gtk.button.Button.setLabel. 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.Button.new_ to
use as a container.
Fetches the text from the label of the button, as set by gtk.button.Button.setLabel. 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.Button.new_ to use as a container.