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
  • Chapter 23. Programming with ADO
    • ADO Objects
    • Connection Objects
    • ADOCommand Objects
    • ADORecordset Objects
    • ADOFields Collections and ADOField Objects
    • ADOParameter Objects and the ADOParameters Collection
    • ADOProperty Objects and ADOProperties Collections
    • Writing a Visual C++ ADO Application
    • Processing ADO Errors
    • Enhanced ADO Recordset Functionality
    • Executing Commands
    • Transactions
    • Summary
  • 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

ADOProperty Objects and ADOProperties Collections

ADOConnection, ADOCommand, ADORecordset, and ADOField objects all include a ADOProperties collection, which is used to hold the individual ADOProperty objects associated with the object. ADOProperty objects are used to represent individual option settings or other characteristics of an ADO object that are not handled by the built-in properties of the object. Although each of the ADO objects can support different sorts of properties, they are all manipulated by using the standard ADOProperty object.

ADOProperties Collection Members

The ADOProperties collection includes the Count property, which gives the number of ADOProperty objects in the collection, and the Item property, which is used to access individual ADOProperty objects in the collection. In addition, the ADOProperties collection supports the Refresh method, which can be used to retrieve information for certain dynamic properties exposed by the provider, although this has no effect for properties that we will see here.

ADOProperty Object Properties

An ADOProperty object is relatively simple. It does not expose any methods and has only the following properties:

• Attributes indicates the characteristics of the property, including whether it is supported, required, or optional. This also includes the read/write permissions for the property.
• Name contains the name of the property.
• Type indicates the data type used for values of this property.
• Value contains the actual value of the property.

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