signal callback delegate or function to connect
void callback(gtk.radio_action.RadioAction current, gtk.radio_action.RadioAction radioAction)
current the member of action's group which has just been activated (optional)
radioAction the instance the signal is connected to (optional)
Yes.After to execute callback after default handler, No.After to execute before (default)
Signal ID
Connect to Changed signal.
The ::changed signal is emitted on every member of a radio group when the active member is changed. The signal gets emitted after the ::activate signals for the previous and current active members.