GtkRadioAction object. To add the action to
a GtkActionGroup and set the accelerator for the action,
call gtkActionGroupAddActionWithAccel.gtkRadioActionNew(name = NULL, label = NULL, tooltip = NULL, stock.id = NULL, value = NULL)namelabelNULL. [ allow-none ]tooltipNULL. [ allow-none ]stock.idNULLvaluegtkRadioActionGetCurrentValue should
return if this action is selected.GtkRadioAction] a new GtkRadioAction