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directly compile to it because the MS C++ compiler has special
extensions to handle the COM resources in the library.

There is a COM library for Haskell:

http://hackage.haskell.org/package/com

But I've never used it.

The API is encoded in a special meta-data format, which is then used
by C++, .NET and Javascript to create the language-specific APIs - it
might be possible to generate Haskell bindings to the COM components
from this metadata.

Antoine