From: Stephen Leake <stephen.a.leake.1@gsfc.nasa.gov>
Subject: Re: Waiting for callbacks from dll on Win32
Date: 04 Nov 2002 16:09:53 -0500
Date: 2002-11-04T21:20:53+00:00 [thread overview]
Message-ID: <uof95rqhq.fsf@gsfc.nasa.gov> (raw)
In-Reply-To: q_Ax9.466$0d2.1246@nntpserver.swip.net
Bj�rn Lundin <bjorn.lundin.nospam@swipnet.se> writes:
> Hello!
> I'm trying to make an interface to a c-dll that
> connects to an OPC-server (WTclient.dll)
>
> It wants a pointer to a procedure, which I can provide
> with an access value to a procedure in a protected object.
Calling a procedure in a protected object is _not_ the same as calling
a "normal" procedure; there are tasking issues involved.
Wrap the protected object call in a "normal" procedure, and use that
as the callback.
Even then, you have to worry about the Ada tasking vs the C tasking.
If you have an Ada main, you are probably ok.
--
-- Stephe
next prev parent reply other threads:[~2002-11-04 21:09 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-11-04 20:46 Waiting for callbacks from dll on Win32 Björn Lundin
2002-11-04 21:09 ` Stephen Leake [this message]
2002-11-05 17:58 ` Warren W. Gay VE3WWG
2002-11-05 18:16 ` Björn Lundin
2002-11-05 18:33 ` Warren W. Gay VE3WWG
2002-11-06 8:23 ` Pascal Obry
2002-11-06 16:39 ` Björn Lundin
2002-11-05 18:15 ` Björn Lundin
2002-11-09 4:30 ` SteveD
-- strict thread matches above, loose matches on Subject: below --
2002-11-07 5:46 Grein, Christoph
2002-11-07 19:26 ` Björn Lundin
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