A callback function that releases data you supply to the function
- iOS 2.0+
- macOS 10.4+
- Mac Catalyst 13.0+
- tvOS 9.0+
- watchOS 2.0+
- Core Graphics
A generic pointer to private data shared among your callback functions. This is the same pointer you supplied to
Info: data: size: release Data:)
A pointer to your provider data.
The size of the data.
When Core Graphics no longer needs direct access to your provider data, your function is called. You may safely modify, move, or release your provider data at this time.