>>Are you saying you cannot do this:
>>
>>CREATE CLASSLIB b
>>
>>** Open the "b" classlib and subclass the command button...name it cmdBase.
>>** Close/Save
>>
>>CREATE CLASSLIB a
>>
>>** Add both "a" and "b" to a new project and name the project "x"
>>
>>** From the project open the "a" classlib and subclass the cmdBase class
>>** in "b" (storing it in "a" naming it cmdBase as well.
>>
>>Or are you saying having cmdBase twice in "a" or "b" ?

I've tried it now and it works - didn't work in VFP5:

Create class cmd as commandbutton of clib1
Create class cmd of clib2 as cmd from clib1

OTOH, there's still one limitation - you can't rename a class in class browser to the name of its parent class. It tells "class {parentclassname} of {parent classlib} has identical class name" and refuses to rename. So this means that from the class browser's POV it's not allowable to have a class and subclass with the same name. Also when you do the same in code:

ox=CreateObject("dum")
?ox.class
?ox.parentclass

DEFINE CLASS dum AS custom

ENDDEFINE

DEFINE CLASS dum AS dum

ENDDEFINE

you get an error about the recursive definition.

This is not completely the same, if you have two classes with the same name in two classlibs but not in a parentclass/childclass relationship, but you seem to be running into the same kind of problems.

Try to Set Classlib To {classlib you need} before compiling. Who knows, might even work.

(p.s. don't know how did I insert a blank response between...)