WebService access library to use with Windows/C++

When connecting to Atmos from Windows platform, using C++ (not .NET), there are several options to "talk" to Atmos web services:

- using WinInet library (somewhat older and lower-level framework)

- WinHTTP library (somewhat newer library specifically targeting HTTP communications)

- the new Microsoft Windows WebServices SDK (apparently available only to Microsoft partners) - a special fast implementation to access WebServices

Which one EMC developers would recommend to use?

By the looks of it, WinHTTP is the best option. WinInet is too low level - more code to write to handle basic functionality. And the new WebServices SDK, although extremely fast, seems to be targeting standardized WebServices implementation - I am not sure it will work with Atmos.