DatabaseErrorExample

    // ------------------------------- //
    // -------- Start of File -------- //
    // ------------------------------- //
    // ----------------------------------------------------------- //
    // C++ Source Code File Name: testprog.cpp
    // Compiler Used: MSVC, BCC32, GCC, HPUX aCC, SOLARIS CC
    // Produced By: DataReel Software Development Team
    // File Creation Date: 02/14/1996
    // Date Last Modified: 06/17/2016
    // Copyright (c) 2001-2016 DataReel Software Development
    // ----------------------------------------------------------- //
    // ------------- Program Description and Details ------------- //
    // ----------------------------------------------------------- //
    /*
    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
    License as published by the Free Software Foundation; either
    version 2.1 of the License, or (at your option) any later version.

    This library is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public
    License along with this library; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307
    USA

    This is a test program for the database error functions and
    exception classes.
    */
    // ----------------------------------------------------------- //
    #include "gxdlcode.h"

    #if defined (__USE_ANSI_CPP__) // Use the ANSI Standard C++ library
    #include <iostream>
    using namespace std; // Use unqualified names for Standard C++ library
    #else // Use the old iostream library by default
    #include <iostream.h>
    #endif // __USE_ANSI_CPP__

    #include <stdlib.h>
    #include "gxderror.h"

    #ifdef __CPP_EXCEPTIONS__

    class CTest
    {
    public:
      CTest() { cout << "Constructing CTest object..." << "\n"; }
      ~CTest() { cout << "Destructing CTest object..." << "\n"; }

    public:
      int FOpen(const char *s);
      gxDatabaseError GetError() { return err; }

    private:
      gxDatabaseError err;
      // ...
      // ...
      // Other data members
    };

    int CTest::FOpen(const char *s)
    {
      // ...
      // ...
      // Simulate an fopen error
      // Error detected here
      cout << "In CTest::FOpen(). Throwing a gxCDatabaseException exception..."
           << "\n";
      err = gxDBASE_FILE_OPEN_ERROR;
      throw gxCDatabaseException();
      // This will automatically call the destructor function during
      // stack unwinding for all local objects constructed before
      // the exception was thrown.

      // The context between the throw site and the catch handler
      // is known as the "exception stack frame".
      // ...
      // ...

      return 0;
    }
    #endif

    void PausePrg()
    {
      cout << "\n";
      cout << "Press enter to continue..." << "\n";
      cin.get();
    }

    int main()
    {
      cout << "\n";
      cout << "Displaying an error message..." << "\n";

      gxDatabaseError err = gxDBASE_WRONG_FILE_TYPE;

      cout << gxDatabaseExceptionMessage(err) << "\n";

      PausePrg();

    #ifdef __CPP_EXCEPTIONS__
      cout << "Testing C++'s built-in exception handling routines" << "\n";

      CTest ob;
      try
        {
          cout << "In try block, calling CTest::FOpen()..." << "\n";
          ob.FOpen("ABCDEF");
        }

      catch(gxCDatabaseException)
        {
          cout << gxDatabaseExceptionMessage(ob.GetError()) << "\n";
        }

      cout << "Resuming program execution here..." << "\n";
    #else
      cout << "C++ Exception handling is not enabled" << "\n";
    #endif

      PausePrg();
      cout << "Test complete. Exiting..." << "\n";

      return 0;
    }
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