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Serial I/O [message #33246]

Sun, 15 December 2002 11:05

m Alport
Messages: 1
Registered: December 2002

Junior Member

IDL seems to have a very useable ActiveX interface. It seems to me that this
is the solution to giving IDL some hardware interface capability - eg serial
I/O - has anyone done this yet?
Or possibly Port I/O...?

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Re: Serial I/O [message #33303 is a reply to message #33246]

Mon, 16 December 2002 11:26

Rick Towler
Messages: 821
Registered: August 1998

Senior Member

"m Alport" <m_alport@hotmail.com> wrote

> IDL seems to have a very useable ActiveX interface. It seems to me that
this
> is the solution to giving IDL some hardware interface capability - eg
serial
> I/O - has anyone done this yet?
> Or possibly Port I/O...?

I have had mixed results using COM objects in IDL. Some of which have been
problems on the IDL side but most have been the generally undocumented
interfaces to most objects. Even in my successful projects I end up hacking
something together. Maybe not a glowing endorsement but you can do it.

The com object is called "Microsoft Communications Control" and it's CLSID
is
{648A5600-2C6E-101B-82B6-000000000014}

I believe that this object is well documented although you may have more
luck if you create your own COM object in something like VB and tailor the
interface for IDL.

Oh yeah, I never was able to pass an array using COM objects in IDL and my
pleas for help went unheard so maybe this isn't the way to go. It is all
rushing back now. The frustration... The time spent with my nose in
COM/ActiveX books... The cursing of RSI for giving us weak documentation...

I think you'll want to try Dave's code.

-Rick

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