Hollywood forums

How to check whether a message port actually is existing or not. If a message gets send to a message port that does not exist, the script unfortunately aborts.
Do hollywood functions return a value on execution? Would something similar to
if sendmessage ("BLA", "BLUP") = false then Debugprint ("failed to send message") work? This particular syntax doesn't work at least, but something like that maybe as you oftenly use with C?

No, Hollywood functions usually don't return a value indicating error or success. But you could encapsulate the call to SendMessage() inside an ExitOnError() clause and then check if it worked or not, i.e.
A function like FindPort() would be nicer though, but still this wouldn't guarantee that SendMessage() succeeds because the port might go away at any time. So even if a function like FindPort() returned to TRUE, it could still happen that the port goes away between FindPort()s return and the call to SendMessage(). I guess that's why I didn't implement a FindPort() functionality because the result would always be unreliable.

Thanks Andreas. As always your answer was pretty helpful.