Markus Egger's book "Advanced OOP in Visual FoxPro" does a good job at comparing the two along with a lot of other valuable information. Although I've been studying OOP for a while but this book helped me to REALLY understand it.

Aloha,

James
>I was wondering if anyone had any thoughts on whether it is better to create non-visual class libararies in VCX files using the Visual Class designer or to do it programmatically using .PRG files.
>
>What are the advantages/disadvantages to each approach?
>
>John