Type Alias

CGDataProviderReleaseInfoCallback

A callback function that releases any private data or resources associated with the data provider.

Declaration

typedef void (*CGDataProviderReleaseInfoCallback)(void *info);

Parameters

info

A generic pointer to private information shared among your callback functions. This is the same pointer you supplied to CGDataProviderCreate.

Discussion

When Core Graphics frees a data provider that has an associated release function, the release function is called.

For information on how to associate your callback function with a data provider, see CGDataProviderCreate and CGDataProviderCallbacks.

See Also

Callbacks

CGDataProviderGetBytesCallback

A callback function that copies from a provider data stream into a Core Graphics buffer.

CGDataProviderRewindCallback

A callback function that moves the current position in the data stream back to the beginning.

CGDataProviderSkipBytesCallback

A callback function that advances the current position in the data stream supplied by the provider.

CGDataProviderSkipForwardCallback

A callback function that advances the current position in the data stream supplied by the provider.

CGDataProviderGetBytePointerCallback

A callback function that returns a generic pointer to the provider data.

CGDataProviderGetBytesAtOffsetCallback

A callback function that copies data from the provider into a Core Graphics buffer.

CGDataProviderReleaseBytePointerCallback

A callback function that releases the pointer Core Graphics obtained by calling CGDataProviderGetBytePointerCallback.

CGDataProviderReleaseDataCallback

A callback function that releases data you supply to the function CGDataProviderCreateWithData.

CGDataProviderGetBytesAtPositionCallback

A callback function that copies data from the provider into a Core Graphics buffer.