CGDataProviderSequentialCallbacks
Defines a structure containing pointers to client-defined callback functions that manage the sending of data for a sequential-access data provider.
Declaration
struct CGDataProviderSequentialCallbacksOverview
The functions specified by the CGDataProviderSequentialCallbacks structure are responsible for sequentially copying data to a memory buffer for Core Graphics to use. The functions are also responsible for handling the data provider’s basic memory management. You supply a CGDataProviderSequentialCallbacks structure to the function init(sequentialInfo:callbacks:) to create a sequential-access data provider.