Re: [Wrapper-user] Wrapping COM Server

[Jim R. <jr...@er...>]

Georg,

We're wrapping an OPC (http://www.opcfoundation.org) server and no OPC 
client is running.  The iMarshal query is associated (somehow) with the 
wrapper.

I checked the source to see if I could find anything COM related there, 
but didn't find anything.  But I could have missed something.

It is also, perhaps, something to do with service managment, but in 
this case I was running as a console application.

Jim


On 2003.09.23 01:22, Georg Schmid wrote:
> Jim,
> 
> just guessing: for some reason, when running from the batch file, 
> both server and client run inside the same COM compartment, but when 
> using the wrapper, they run in different compartments and therefore 
> calls from the client to the server need to be marshalled.
> 
> Georg
> 
> Jim Redman wrote:
> 
>> I have a problem wrapping a COM server.  Wrapping COM clients seems 
>> to
>> work fine also.  The COM Server is implemented as a JNI.  The server 
>> works
>> fine from a batch file.
>> 
>> Running the code from the batch file, I see all the expected startup
>> messages.  I see the same thing from the wrapper (console mode), but 
>> this
>> is immediately followed by a "QueryInterface" with a ID of 
>> iMarshal.  This
>> fails (which is OK) this request is then followed by an IUnknown 
>> request
>> (which succeeds).  HOWEVER after this, the COM client does not work.
>> 
>> With the batch file I see the "CreateInstance" followed by lots of 
>> COM
>> requests.  With the wrapper, I see none of these.  Attempts to 
>> access the
>> interface fails.
>> 
>> Anyone have any thoughts or suggestions?  Where do the COM calls 
>> come from
>> in the wrapper - I couldn't find any?
>> 
>> Jim
>> 
>> 
>> 
> 
>-- 
> --
> Georg Schmid
> Special Applications Section Manager   mailto:geo...@ti...
> Freising Wafer Fab (FFAB) Make IT      phone: +49 8161 804595
> Texas Instruments Deutschland GmbH     fax: +49 8161 803350
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> 
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Jim Redman
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