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Gets the primary dispatch interface ID.
A pointer to an interface ID (a GUID).
Derived classes should override this member function (if not overridden, GetDispatchIID returns FALSE). See COleControl.
For more information, see Knowledge Base article Q185720, "HOWTO: Provide Type Information From an MFC Automation Server." Knowledge Base articles are available in the MSDN Library Visual Studio documentation or at http://support.microsoft.com.