Re: IXMLDOMDocument is NULL when passed from DLL to EXE

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From: Alexander Nickolov (agnickolov_at_mvps.org)
Date: 03/25/04 

Date: Thu, 25 Mar 2004 09:50:42 -0800

Did you pass the pointer, or the address of the pointer? 

-- 
=====================================
Alexander Nickolov
Microsoft MVP [VC], MCSD
email: agnickolov@mvps.org
MVP VC FAQ: http://www.mvps.org/vcfaq
=====================================
"AS" <a@aa.com> wrote in message news:%2319z1XlEEHA.2884@TK2MSFTNGP12.phx.gbl...
> Hello
> 
> Firstly, i realise this seems like a question on the MSXML SDK - but i think
> the error im getting is COM related.
> 
> I have a thread which calls a function inside a DLL (which i also wrote -
> just a normal Win32 DLL). In the thread i declare a pointer to an XML
> Document i.e. IXMLDOMDocument *paXMLDoc = NULL;
> 
> I pass this pointer to my DLL which calls CoCreateInstance to create an XML
> document - the DLL function then proceeds to load an XML document.
> 
> However, the problem is that when the DLL function returns, the created XML
> document is always NULL. I have no idea why as I have debugged inside the
> DLL and it gets created ok. Its just not getting returned properly.
> 
> I have called CoInitializeEx in the main thread with the multithreaded flag.
> Could the problem be caused by the fact that i am trying to pass and object
> between my DLL and my EXE?
> 
> Any advice would be appreciates.
> 
> Thanks
> 
> Andy
> 
> 
> 
> 
> 
> 
> 
>

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