Hi,

cRefCon..FBcntrlSubclass = _buttonSubClass

errors out in FBtoC but works fine in FB

That is one of the statements in Al's Nib Example:
http://users.aol.com/AlStaff/MacSoftware/BASIC/fb4_nibWindows.zip

What should I change it too, or what should I do to make it work?

Brian