jym@mica.berkeley.edu (Jym Dyer) (03/26/91)
___
__ A few months ago I appealed to these newsgroups for help using
_ XtAppAddInput() with mailbox input under VMS. The exchange of
messages that followed led to a solution:
o Use an EFN in cluster 0. And a separate IOSB.
o Use $QIO and IO$_WRITEATTN to queue up a AST demon
routine which is called when something is written
to the mailbox.
o Have the demon routine explicitly set the EFN and
set the status in the IOSB to 1, thereby telling
the DECwindows event loop that it's got something
to deal with.
___
__ Well, somebody in my department has written a little package
_ that does mailbox IO a bit differently. It queues an asynch-
ronous read request to the input mailbox at appropriate
times.
___
__ It seems to me that if I use this package, I'll probably have
_ a simpler technique overall. Has anyone implemented anything
with DECwindows that works this way? If so, could you tell me
any pitfalls and such I might watch out for?
<_Jym_>