Creates a new #GtkRadioButton containing a label, adding it to the same group as group. The label will be created using gtk.label.Label.newWithMnemonic, so underscores in label indicate the mnemonic for the button.
the radio button group, or null
the text of the button, with an underscore in front of the mnemonic character
a new #GtkRadioButton
Creates a new #GtkRadioButton containing a label, adding it to the same group as group. The label will be created using gtk.label.Label.newWithMnemonic, so underscores in label indicate the mnemonic for the button.