Where to receive MCI PostMessageW notifications?

[Joerg-Cyril.Hoehle at t-systems.com]

Hi,

the MCI relies on notification to implement auto-open correctly. When
the command is done, it must send out a notification via PostMessageW.
The receiver then ought to call mciClose.

One possible implementation would be to have auto-open start a thread
that does nothing else but wait for this message to arrive, then call
mciClose.  I wonder if there's something more lightweight than a
thread (this is not Erlang) that could be used inside Wine.

What could be used that reacts asynchronously to PostMessageW?

Currently, the missing auto-open functionality causes
 - unclosed files (some seen as error messages when Wine exits)
   (here it is essential that the notification works 100%)
 - some application hangs, some of them in Bugzilla.

Thanks,
 Jörg Höhle