Hello Luigi,
1. regarding OnConsoleMessage, CEF changes its API from time to time and if you get "override" warning or error, it means than functions parameters no longer match API and it needs to be updated. I will take a look and update it.
2. regarding white page area - make sure that all CEF files are copied to your destination directory and try to compile test application in release mode. There is some bug that prevents CEF from working in debug mode and I haven't found a solution yet.