| 摘要 |
Methods for converting from a COM interface pointer to an underlying C++ object are described in various embodiments. In the various embodiments, classes are constructed in support of the underlying C++ object. The classes are used to enforce rules safely convert a COM interface pointer. One rule is that a COM interface to be converted cannot be marshaled. A second rule is that an object requesting the C++ object must have legal access to the COM interface (for example, the same execution unit). A third rule is that the object type of the COM interface must be in the inheritance hierarchy of the C++ object.
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