VarUtils

Use SafeArrayDestroy to destroy safe array given through VarArray.  

SafeArrayDestroy first checks whether the given safe array is locked or nil. If this is the case, then SafeArrayDestroy returns VAR_ARRAYISLOCKED or VAR_INVALIDARG, correspondingly.  

If the safe array is valid, then SafeArrayDestroy removes the actual data from memory using a call to SafeArrayDestroyData and also destroys the associated safe array descriptor with a call to SafeArrayDestroyDescriptor. If SafeArrayDestroy manages to destroy the safe array, it returns a VAR_OK result. 

SafeArrayCreate 

SafeArrayDestroyData 

SafeArrayDestroyDescriptor