PropertyHandle :: IsWeakTyped - Is reference weak typed
The function returns YES if the reference or collection is defined as weak typed. In this case the type of instances may change from instance to instance. All instances in the reference are bases on a common base structure.
The type of the common base structure can be retrieved with GetStructDef(). The type for the selected instance can be retrieved with GetCurrentType().
Before inserting a new instance to a weak-typed reference the type must be set with SetType().
Return value: Return value ( logical )
The function returns YES when the question was answered positively. Otherwise it returns NO.