Registers a composite definition file as regular COM object.
object.RegisterClass( definition [, bUser [, defType])
definition - The path to the definition file (text or
bUser - Optional. Default is False - normal
registration. If True the component is registered for the current
user only (supported by Win2k and later only!).
defType - Optional. Helps the method to determine the type
of the definition. See CreateObject,
but note that only files can be used!
Applies to: VaryDispCreator