0.1 28 February, 2000 NSDistributedNotificationCenter Foundation/NSDistributedNotificationCenter.h NSObject defaultCenter notificationCenterForType:type addObserver:anObserverselector:aSelectorname:notificationName addObserver:anObserverselector:aSelectorname:notificationNameobject:anObjectsuspensionBehavior:suspensionBehavior postNotification:notification postNotificationName:notificationName postNotificationName:notificationNameobject:anObjectuserInfo:userInfo postNotificationName:notificationNameobject:anObjectuserInfo:userInfodeliverImmediately:deliverImmediately removeObserver:anObservername:notificationNameobject:anObject setSuspended:suspended suspended