alias GObject::SignalAccumulator
Overview
The signal accumulator is a special callback function that can be used to collect return values of the various callbacks that are called during a signal emission.
The signal accumulator is specified at signal creation time, if it is
left nil, no accumulation of callback return values is performed.
The return value of signal emissions is then the value returned by the
last callback.
Alias Definition
GObject::SignalInvocationHint, GObject::Value, GObject::Value -> Bool