Steve,

The code is defined in txtBtns class.

Using this class library for an example is not that great as it exhibits some bad subclassing practises. I would suggest that you look at the foundation classes in VFP 6 to get a better idea of how to create reusable classes.

Also, use the Class browser to look at the classes. There you will see the inheritence heirarchy visually so it is easy to move up the tree and look at parent class code.