signalOverrideClassClosure
fun signalOverrideClassClosure(signalId: <Error class: unknown class>, instanceType: <Error class: unknown class>, classClosure: Closure)
Overrides the class closure (i.e. the default handler) for the given signal for emissions on instances of @instance_type. @instance_type must be derived from the type to which the signal belongs.
See g_signal_chain_from_overridden() and g_signal_chain_from_overridden_handler() for how to chain up to the parent class closure from inside the overridden one.
Parameters
signalId
the signal id
instanceType
the instance type on which to override the class closure for the signal.
classClosure
the closure.