CFRunLoopContainsObserver(_:_:_:)
Returns a Boolean value that indicates whether a run loop mode contains a particular CFRunLoopObserver object.
Declaration
func CFRunLoopContainsObserver(_ rl: CFRunLoop!, _ observer: CFRunLoopObserver!, _ mode: CFRunLoopMode!) -> BoolParameters
- rl:
The run loop to examine.
- observer:
The run loop observer for which to search.
- mode:
The run loop mode in which to search for
observer. Use the constant Commonmodes to search forobserverin the set of objects monitored by all the common modes.
Return Value
true if observer is in mode mode of the run loop rl, otherwise false.
Discussion
If observer was added to commonModes, this function returns true if mode is either commonModes or any of the modes that has been added to the set of common modes.