c2533

when trying to build docm i got this error c2533
and a warning MIDL 2039

what is the solution??

I presume you are compiling a DCOM project under Windows and therefore you are using Visual C++? If this is the case you can check for the explaination of these errors in the MSDN help or online at:

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/vccore/html/C2533.asp

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/midl/midl/compiler_errors.asp

Hope this helps.