title: Projects using Log4cpp library
body: <p>I'm looking for a few projects that are using log4cpp for logging. Unfortunately I couldn't find any good examples of this library.<br/>
  Now I have a simple working example of it but I need some more complex(at least for me ;-) ) examples like how to use log4cpp::Filter or log4cpp::LoggingEvent since I need filtering capabilities.
  Thanks,</p>