Structure

CGFunctionCallbacks

A structure that contains callbacks needed by a CGFunctionRef object.

Declaration

struct CGFunctionCallbacks

Topics

Instance Properties

var evaluate: CGFunctionEvaluateCallback?

The callback that evaluates the function.

var version: UInt32

The structure version number. For this structure, the version should be 0.

See Also

Creating Function Objects

typealias CGFunctionEvaluateCallback

Performs custom operations on the supplied input data to produce output data.

typealias CGFunctionReleaseInfoCallback

Performs custom clean-up tasks when Core Graphics deallocates a CGFunctionRef object.