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Subclassing The DataEnvironment
Message
De
01/10/1998 13:50:25
 
Information générale
Forum:
Visual FoxPro
Catégorie:
Classes - VCX
Divers
Thread ID:
00142671
Message ID:
00142922
Vues:
38
>> You'll have to say goodby to visual DEs though, and handle everything through code.
>
>You don't necessarily have to use non-Visual classes for this. We've created Visual Data Environment and Cursor classes (not based on the VFP base cursor, data environment and relation classes) in VFE 98. It wasn't really hard to do and is really worth the effort in the long term because it makes creating and maintaining DE's & Cursors much easier in the long run.

How is the class then instantiated, in the form's .Init()? I think I mentioned
that our shop is currently using ProMatrix and it would take more than custom
DE's to get folks to switch.

From everything I've read using the native DE is faster in opening files and
setting relations because "the DE uses low level file operations". If I sub-class it, will the same remain true?
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