Creates a new GtkRadioMenuItem containing a label. The label will be created using gtk.label.Label.newWithMnemonic, so underscores in label indicate the mnemonic for the menu item.
The new #GtkRadioMenuItem is added to the same group as group.
An existing #GtkRadioMenuItem
the text of the button, with an underscore in front of the mnemonic character
The new #GtkRadioMenuItem
Creates a new GtkRadioMenuItem containing a label. The label will be created using gtk.label.Label.newWithMnemonic, so underscores in label indicate the mnemonic for the menu item.
The new #GtkRadioMenuItem is added to the same group as group.