Adding attributes in MSXML

Hi,

I have this requirement to add two debugging attributes for every element of 
the xml document i parse. I am using MSXML4 RTM. I use ISAXXMLReader to 
parse the document. I have a class which overrides ISAXContentHandler and in 
the startElement method i add the two attributes. The problem is, i get a 
pointer to ISAXAttributes which i cannot modify. To add attributes i need a 
IMXAttributes pointer. I tried to get IMXAttributes pointer from 
ISAXAttributes pointer through queryinterface but it fails. I had to make a 
copy of each attribute and stick it into the IMXAttributes which slowed down 
my app by atleast two times. can someone suggest a better way to handle 
this.

Thanks,
Venkat

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