Contents

ABImageClientCallback

Prototype of a callback function used to notify an application when an asynchronous image fetch is complete.

Declaration

typealias ABImageClientCallback = (CFData?, CFIndex, UnsafeMutableRawPointer?) -> Void

Parameters

imageData:
The image data in Quicktime compatible format that was loaded from an asynchronous fetch. NULL if the fetch failed.
tag:
The tracking number for this fetch that should have been obtained from a previous call to the Abbeginloadingimagedataforclient(_:_:_:) function.
info:
An untyped pointer to program-defined data that was passed to the Abbeginloadingimagedataforclient(_:_:_:) function.

Discussion

Use the ABBeginLoadingImageDataForClient(_:_:_:) function to begin an asynchronous fetch, and the ABCancelLoadingImageDataForTag(_:) function to cancel an asynchronous fetch.