2008/1/4, Axel Dörfler <axeld@xxxxxxxxxxxxxxxx>: > The documentation in the BeBook is more helpful here: if you pass in a > reply message, the call will be synchronous, if not, it's asynchronous > (regardless of wether or not you specify a reply target). Ok thank you. Another question. Could be that our BLooper::PostMessage() deadlocks in case the message queue is full ? At least, switching to BMessenger::SendMessage() fixed a deadlock I had in my code, and examining the backtrace I noticed that the app was locked in PostMessage().