Hmmm....it worked on mine, but I don't default to having the Property Sheet open when I open a Designer....Maybe throw an ACTIVATE WINDOW "Class Designer" in front of the RELEASE WINDOW....??

There is *another* possible way to do this but I haven't tested it....In code: Create the new classlib then scan through the old classlib.....SCATTER from old, APPEND and GATHER to new...change properties to reflect new parent class...then close all libs and COMPILE CLASSLIB on the new one.





>>Fred ...
>>
>>THIS WILL WORK!! (big grin)
>>

>>*** SUBCLASS.PRG
>>LPARA cOldClass,cOldClassLib,cNewClass,cNewClassLib
>>SET SAFETY OFF
>>CREATE CLASS &cNewClass OF &cNewClassLib AS &cOldClass FROM &cOldClassLib NOWAIT
>>KEYB "{CTRL+W}"
>>RETURN
>>

>
>Close, but no cigar. If the Property Sheet is active, that's what gets closed, not the class? Sigh. It seems I've set you off on a mission.