Variable number of arguments in COM interface method

[bikashg]

Hello All,

I have a method being declared in a COM Interface. I want this method to take variable number of arguments.

Hence I declared the method as follows in the "IDL" file.
LogMsg(long completionCode, long msgID, ...);

But during compilation time it is giving me an error as follows...

"cannot specify a variable number of arguments to a remote procedure : [ Parameter '...' of Procedure 'LogMsg' ( Interface 'IZLogger' ) ]"

your help will be highly appreciated

[alexey_1979]

Search the site by vararg keyword.

[Monday]

With MIDL, you can use the "optional" keyword to specify arguments which are not required:

HRESULT MyFunc([in, optional] VARIANT Param1, 
               [out, optional] VARIANT Param2)

As far as I know, you cannot specify fully variable argument lists like in C++, at least not for non-inproc servers.

[bikashg]

Thanks for your suggestions guys,

Is it possible to have variable list of arguments for in-proc servers. Please let me know cos I might have an option to convert it to in-proc