Congratulations! You've been sleeping way too long. Now, try to wake up.
BGI has died at some 20 years ago or so. It was created by Borland, where Object/Turbo/Delphi Pascal and Delphi, major predecessor of .NET, were created, but BGI was never anything good. Even it 1987, what it was born:
Forget it like a nightmare and never remember.