PropertyHandle :: IsBasedOn - Does structure inherit from passed type
The function returns whether the current type of the property handle is a specialization of the type passed in strnames ( YES ) or not ( NO ). When no instance is selected the function checks the type defined for the property handle. In contrast to Inherits, the function returns NO , when the current type is identical with the type name passed in strnames .
Return value: Return value ( logical )
The function returns YES when the question was answered positively. Otherwise it returns NO .