VBScript can handle more than just VARIANTs, it can handle oleautomation types.

The problem you're having is because of [in,out].

The short answer is change the [in, out] IXMLDOMDocument** to [in, out] IDispatch**.
[in,out] is generally a bad idea though for COM objects used in scripting languages.

The long answer is to read a previous post I wrote a while ago:
http://discuss.microsoft.com/SCRIPTS/WA-MSD.EXE?A2=ind0009D&L=ATL&P=R31818&I=-3

The ATL list on discuss.microsoft.com is also a good place to ask questions like these.

-Daniel

-----Original Message-----
From: Frederic Gos [mailto:fredericGOS.DK]
Sent: Tuesday, August 13, 2002 3:36 AM
To: DCOMDISCUSS.MICROSOFT.COM
Subject: Re: runtime error '800a000d' when attempting to call COM
function from ASP page

You will not be able to use that COM object from an ASP page.
VBScript can basically only handle VARIANT's. For it to work, the params
should have been VARIANTs holding IDispatch*

You should instead create a COM obj in VB or C++ that uses this object and
call it from an ASP page.

cheers
Frederic

-----Original Message-----
From: Keith Daly [mailto:keith_dalyHOTMAIL.COM]
Sent: Tuesday, August 13, 2002 11:17 AM
To: DCOMDISCUSS.MICROSOFT.COM
Subject: runtime error '800a000d' when attempting to call COM function
from ASP page

Hi,

Hope this is the correct forum for this request, I don't see a pure COM
mailing list...

I'm having a problem accessing a function in a COM object from VBScript in
an ASP page. The COM object interface (I have no access to the source for
this) is
[id(0x60030000)] boolean ProcessMessage(
                [in, out] IXMLDOMDocument** InputXML,
                [in, out] IXMLDOMDocument** OutputXML,
                [in, out] IXMLDOMDocument** MessageXML);

The VbScript I am using is:
Dim objQuote, outputXML, messageXML, return, inputXML
        Set objQuote = Server.CreateObject("Object.Quote")
        Set inputXML = Server.CreateObject("Microsoft.XMLDOM")
        Set outputXML = Server.CreateObject("Microsoft.XMLDOM")
        Set messageXML = Server.CreateObject("Microsoft.XMLDOM")
        Set return = objQuote.ProcessMessage(inputXML, outputXML,
messageXML)

I get the following error when I run the script:
Microsoft VBScript runtime error '800a000d'
Type mismatch: 'objQuote.ProcessMessage'

I assume it's a problem with the type of the parameters. It may be a problem
with my version of msxml.dll. (though having checked it out using Oleview
and compared it against the doco for the COM object, it looks right).

Any help with fixing this gratefully accepted
Keith

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