Header File: edbcomps

typedef void __fastcall (__closure
      *TEDBServerSessionLoginEvent)(System::TObject* Sender, const
      AnsiString UserName, const AnsiString UserPassword, const
      AnsiString Address, const AnsiString ProcessName, int ThreadID,
      System::Currency ReleaseNumber, int BuildNumber, bool
      &AllowLogin)

This type is used for the TEDBEngine OnServerSessionLoginEvent event.