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All COM objects implement one or more interfaces. When you create a custom COM object, you must describe the interface or interfaces in an IDL file. The topics in this section present information on using MIDL to define COM interfaces:

For more information on defining COM interfaces with MIDL, see Defining COM Interfaces. For more information on building generated files for various platforms, see Targeting Stubs for Specific 32-bit or 64-bit Platforms.



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