ClosureMarshal

typealias ClosureMarshal = (closure: Closure, returnValue: Value?, <Error class: unknown class>) -> Unit

The type used for marshaller functions.

param closure the #GClosure to which the marshaller belongs
param returnValue a #GValue to store the return value. May be null if the callback of @closure doesn't return a value.
param nParamValues the length of the @param_values array