ANT_WrappedLib.DLL just exposes functions in the ANT_Library to the ANT_Managed_Library (C#) so I don't think that is what you want to use (unless you want to switch to .NET development).
There is a "readme.txt" file in the other code package available for download, the "ANT Windows Library Package with source code" and this shows a hierarchy of the libraries (unfortunately it won't copy here).
Available at:
http://www.thisisant.com/pages/ant/ant-software-tools
For your purposes, since ANT_DLL cannot do what you want you will probably need to access the ANT Library directly. The "DEMO_LIB" project under the "Windows Library Package" shows how to access the ANT_LIB directly, and this would be a good starting point.