Compiling error with MSXML.DLL in VC++ .NET

Hi All,

I'm trying to compile a code I write in VC++ 6 to VC++ .NET.

Some parts of the code are using the MSXML to read/write xml files.
When I compile the code I get this erros on the xml DOM objects:

error C2872: 'IXMLDOMNodePtr' : ambiguous symbol

On the StdAfx.h I have this declaration:

//#import "msxml.dll" named_guids raw_interfaces_only
#import <msxml.dll> named_guids
using namespace MSXML;

Please help,
Doron Tal
Who is Participating?
drichardsConnect With a Mentor Commented:
If you look closely at the output of the compiler, you see:

d:\DevProjects\CPPConsole\CPPConsole.cpp(77) : error C2872: 'IXMLDOMNodePtr' : ambiguous symbol
        could be 'd:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\comdefsp.h(1249) : _com_ptr_t<_IIID> IXMLDOMNodePtr'
            _IIID=_com_IIID<IXMLDOMNode,& _GUID_2933bf80_7b36_11d2_b20e_00c04f983e60>
        or       'd:\DevProjects\CPPConsole\Debug\msxml.tlh(105) : MSXML::IXMLDOMNodePtr'

VC7 has a new file 'comdefsp.h' that predefines smart pointers for a lot of interfaces, including the MSXML ones.  comdefsp.h is included by 'comdef.h' which is included by 'msxml.tlh'.  Thus you have two definitions of all the XML interface smart pointers.  If you try to '#import <msxml.dll> no_namespace' you really have problems.  To solve the problem, you can either

1) drop the 'using namespace MSXML;' or

2) explicitly specify either 'MSXML::' or '::' in front of all the ambiguous symbols.

Dropping 'using namespace MSXML;' (option 1) will mean that you need to put 'MSXML::' in front of all the XML stuff, not just the smart pointers.  Take your pick.
doront99Author Commented:
Thank you. Now it's working.
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