signalConnectClosure
fun signalConnectClosure(instance: Object, detailedSignal: String, closure: Closure, after: Boolean): <Error class: unknown class>
Connects a closure to a signal for a particular object.
Return
the handler ID (always greater than 0 for successful connections)
Parameters
instance
the instance to connect to.
detailedSignal
a string of the form "signal-name::detail".
closure
the closure to connect.
after
whether the handler should be called before or after the default handler of the signal.