Re: Opening COM port twice

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#12602

From: Remy Lebeau (TeamB)
Date: Sun, 30 Nov 2003 00:44

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"Denville Longhurst" <Denville@metco.co.uk> wrote in message
news:3fc8c2ee@newsgroups.borland.com...

> Is it possible for two applications to open a COM port simultaneously?

No.  Such resources can only be used by one thing at a time.

For what you ask, you will have to make it so that the application that
opens the port stores the received data somewhere and makes it available to
the other application separately.  Either set asside shared memory, or (what
I did) create a dedicated server application whose sole purpose is to access
the port and then forward the data to any other application that wants the
data via an IPC mechanism (TCP socket, names pipes, COM, etc).


Gambit

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Subject: Re: Opening COM port twice
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