I was trying to do something relative to OAuth,and found QOAuth.But I don't know how to setup..

I have build qt with OpenSSL
I have build QCA
I have build QCA plugin for openSSL(PS:I comment out all the lines contain "EVP_md2",they just kept throwing out errors while compiling.And I don't think that would be a serious problem if I don't use MD2)
Then I build the QOAuth(without the test thing,they throw errors too), So Now I got two dlls:qoauth1.dll and qoauthd1.dll
But I don't know what to do.
If I just copy these dlls to my project folder along with their headers.I can't compile my project.Because it can't find the decalation of QCA.

The author says that:
HOW TO USE:
Add these two lines to your project:
* in project file:
CONFIG += oauth
* in source code:
#include
You can start using QOAuth.
I want to do this in windows,too.Anybody knows how?