Allocating and Releasing Memory for a BSTRWhen you create BSTRs and pass them between COM objects, you must take care in treating the memory they use in order to avoid memory leaks. When a BSTR stays within an interface, you must free its memory when you are done with it. However, when a BSTR passes out of an interface, the receiving object takes responsibility for its memory management. In general, the rules for allocating and releasing
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