Problem when compiling IBEvents6

Q: The file IBEvents6 can't be compiled: unknown identifiers CheckIBLoaded, isc_event_counts, isc_que_events,isc_event_block, isc_free,isc_cancel_events.

A: They are declared in IBIntf.pas that is part of Delphi IBX in Delphi7/Source/VCL folder.