Visual C++ 6 Unleashed

By MICKEY WILLIAMS and David Bennett

• Table of Contents
  • Copyright
  • About the Authors
  • About the Contributors
  • Acknowledgments
  • Tell Us What You Think!
  • Introduction
  • How to Use This Book
  • What You Need to Use This Book
  • What's New in Visual C++ 6.0
  • Contacting the Main Author
  • Part I: Introduction
  • Chapter 1. The Visual C++ 6.0 Environment
  • Part II: MFC Programming
  • Chapter 2. MFC Class Library Overview
  • Chapter 3. MFC Message Handling Mechanism
  • Chapter 4. The Document View Architecture
  • Chapter 5. Creating and Using Dialog Boxes
  • Chapter 6. Working with Device Contexts and GDI Objects
  • Chapter 7. Creating and Using Property Sheets
  • Chapter 8. Working with the File System
  • Chapter 9. Using Serialization with File and Archive Objects
  • Part III: Internet Programming with MFC
  • Chapter 10. MFC and the Internet Server API (ISAPI)
  • Chapter 11. The WinInet API
  • Chapter 12. MFC HTML Support
  • Part IV: Advanced Programming Topics
  • Chapter 13. Using the Standard C++ Library
  • Chapter 14. Error Detection and Exception Handling Techniques
  • Chapter 15. Debugging and Profiling Strategies
  • Chapter 16. Multithreading
  • Chapter 17. Using Scripting and Other Tools to Automate the Visual C++ IDE
  • Part V: Database Programming
  • Chapter 18. Creating Custom AppWizards
  • Chapter 19. Database Overview
  • Chapter 20. ODBC Programming
  • Chapter 21. MFC Database Classes
  • Chapter 22. Using OLE DB
    • OLE DB Architecture
    • Developing an OLE DB Application
    • Retrieving Column Information
    • Using Transactions
    • Using Enumerators
    • Summary
  • Chapter 23. Programming with ADO
  • Part VI: MFC Support for COM and ActiveX
  • Chapter 24. Overview of COM and Active Technologies
  • Chapter 25. Active Documents
  • Chapter 26. Active Containers
  • Chapter 27. Active Servers
  • Chapter 28. ActiveX Controls
  • Part VII: Using the Active Template Library
  • Chapter 29. ATL Architecture
  • Chapter 30. Creating COM Objects Using ATL
  • Chapter 31. Creating ActiveX Controls Using ATL
  • Chapter 32. Using ATL to Create MTS and COM+ Components
  • Part VIII: Finishing Touches
  • Chapter 33. Adding Windows Help
  • Part IX: Appendix

Summary

OLE DB programming used to be for only those developers willing to spend an inordinate amount of time learning the OLE DB techniques and coordinating their programming efforts. Many programmers were forced to adopt the easier but slower ADO in order to access OLE DB data sources. Visual C++ 6.0 changed all that. Although other languages still must rely on ADO, Visual C++ developers can now access OLE DB directly with help from the Active Template Library (ATL). This chapter shows you how.

To recap:

• When developing OLE DB applications, you should start with the ATL COM AppWizard and then use the ATL Object Wizard to insert OLE DB functionality into your application.
• The CRowset class contains the needed functionality to navigate around and update your rowset.
• The CAccessor class enables you to define the variables that will be bound to your CRowset class.
• The CCommand class ties the CRowset and CAccessor functionality together for easy OLE DB access through one ATL class.
• The CSession class contains a member variable, m_session, inside the ATL-generated CCommand class that enables you to manipulate transactions for your rowset.
• A special CRowset, CEnumerator, lists the available OLE DB providers in a CRowset format.

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