And these can now be vectored through glue routines (by defining USE_TOOLBOX_OBJECT_GLUE) which will do the necessary imports, whereupon the module's init routine will tell the glue routine about the real conversion routine address and everything is fine again.
handle = Ctl.as_Resource(ctl)
ctl = Ctl.as_Control(handle)
and similarly for List, Menu, TE. The old handle.as_Control() methods are
still there for backward compatability.