Function

CFRunLoopObserverGetContext(_:_:)

Returns the context information for a CFRunLoopObserver object.

Declaration

func CFRunLoopObserverGetContext(_ observer: CFRunLoopObserver!, _ context: UnsafeMutablePointer<CFRunLoopObserverContext>!)

Parameters

observer

The run loop observer to examine.

context

Upon return, contains the context information for observer. This is the same information passed to CFRunLoopObserverCreate(_:_:_:_:_:_:) when creating observer.

Discussion

The context version number for run loop observers is currently 0. Before calling this function, you need to initialize the version member of context to 0.

See Also

CFRunLoopObserver Miscellaneous Functions

func CFRunLoopObserverDoesRepeat(CFRunLoopObserver!) -> Bool

Returns a Boolean value that indicates whether a CFRunLoopObserver repeats.

func CFRunLoopObserverGetActivities(CFRunLoopObserver!) -> CFOptionFlags

Returns the run loop stages during which an observer runs.

func CFRunLoopObserverGetOrder(CFRunLoopObserver!) -> CFIndex

Returns the ordering parameter for a CFRunLoopObserver object.

func CFRunLoopObserverGetTypeID() -> CFTypeID

Returns the type identifier for the CFRunLoopObserver opaque type.

func CFRunLoopObserverInvalidate(CFRunLoopObserver!)

Invalidates a CFRunLoopObserver object, stopping it from ever firing again.

func CFRunLoopObserverIsValid(CFRunLoopObserver!) -> Bool

Returns a Boolean value that indicates whether a CFRunLoopObserver object is valid and able to fire.

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