Best C++ library to interact with ICQ?

I have a Qt-based windows application written in C++ that needs to report it's status via ICQ and react on some ICQ messages. Maybe anyone know a good library to interact with ICQ? I need to connect ICQ with registered login and password, send messages to specified contacts and receive messages from them.

Solution

I know of two streamline options:

libpurple - The core library behind Pidgin
Telepathy - The core behind Empathy

Is this declaration UB?
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