Determine if 'this' is a base class of cd. (Actually, if it is an interface supported by cd) Output: *poffset offset to start of class OFFSET_RUNTIME must determine offset at runtime
false not a base true is a base
See Implementation
Determine if 'this' is a base class of cd. (Actually, if it is an interface supported by cd) Output: *poffset offset to start of class OFFSET_RUNTIME must determine offset at runtime