Type Alias

CGBitmapContextReleaseDataCallback

A callback function used to release data associate with the bitmap context.

Declaration

typealias CGBitmapContextReleaseDataCallback = (UnsafeMutableRawPointer?, UnsafeMutableRawPointer?) -> Void

Discussion

The releaseInfo parameter contains the contextual data that you passed to the init(data:width:height:bitsPerComponent:bytesPerRow:space:bitmapInfo:releaseCallback:releaseInfo:) function. The data parameter contains a pointer to the bitmap data for you to release.

Beta Software

This documentation contains preliminary information about an API or technology in development. This information is subject to change, and software implemented according to this documentation should be tested with final operating system software.

Learn more about using Apple's beta software