             Copyright (c) 1991-1994 Borland International, Inc.
                            All Rights Reserved.

This document describes the files used for demonstrating the EXTERN system,
which are installed in the SAMPLES\EXTERN subdirectory.


The dbasevar.h header contains classes that allow users to manipulate
Visual dBase variables in a DLL, which talks to Visual dBASE through
the EXTERN system.

        dbasevar.h      include file to be used by programs using the
                        EXTERN system.

The dbfile example is a C++ DLL that contains textfile manipulation
routines, which are accessible from Visual dBASE through the EXTERN system.

        dbfile.cpp      main source file
        dbfile.h        header
        dbfile.def      def file
        dbfile.mak      makefile to build the DLL with BCC
        dbfile.prg      some Visual dBASE code to set up the DLL and a class
        dbfile.dll      compiled copy of the DLL
        dbsysdrv.prg    Visual dBASE example that uses the dbfile.dll
        dbgrep.prg      Another Visual dBASE example that uses the dbfile.dll

The dbextern example is a C++ DLL and Visual dBASE program that
explains the different ways the EXTERN system can be used.

        dbextern.cpp    main C++ source file
        dbextern.prg    main Visual dBASE source file
        dbextern.def    def file
        dbextern.mak    makefile to build the DLL with BCC
        dbextern.dll    compiled copy of the DLL

