Function

CFRunLoopObserverGetContext

Returns the context information for a CFRunLoopObserver object.

Declaration

void CFRunLoopObserverGetContext(CFRunLoopObserverRef observer, CFRunLoopObserverContext *context);

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

CFRunLoopObserverCreateWithHandler

Creates a CFRunLoopObserver object with a block-based handler.

CFRunLoopObserverCreate

Creates a CFRunLoopObserver object with a function callback.

CFRunLoopObserverDoesRepeat

Returns a Boolean value that indicates whether a CFRunLoopObserver repeats.

CFRunLoopObserverGetActivities

Returns the run loop stages during which an observer runs.

CFRunLoopObserverGetOrder

Returns the ordering parameter for a CFRunLoopObserver object.

CFRunLoopObserverGetTypeID

Returns the type identifier for the CFRunLoopObserver opaque type.

CFRunLoopObserverInvalidate

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

CFRunLoopObserverIsValid

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

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