>>[Note that while this kind of abstract layer is highly recommended when you >work with VFP base classes or most other simple classes, you need to be very >careful before deciding to do this with any composite class (eg, Password >Dialog box). Drew Speedie wrote a good article a year or so ago about dangers >in composite development. I would recommend avoiding subclassing of composites >where posssible, or at least asking questions here before doing so.]
>
>Randy,
>
>Thanks for the recommendation. Can you give me a brief description and a few more examples of a composite class and why the warning about subclassing the composite class types? Or can you tell me where to find the article from Drew Speedie?
>
I think it was FoxPro Advisor, February 1998. The basic issue has to do with inheritance of the individual components when you subclass a composite class. Maybe if you search on "speedie composite" back in that time frame there might be some good discussion of it here. Complex issue.
-- Randy
Previous
Reply
View the map of this thread
View the map of this thread starting from this message only
View all messages of this thread
View all messages of this thread starting from this message only