How do I get python to load .NET .dlls referenced by mixed mode .dlls?

I have a python .pyd that is a mixed mode C++ DLL. The DLL loads fine and loads unmanaged C++ dlls without a problem, but when it tries to load the .NET dlls referenced by the managed C++ dlls it fails with this error message:

Unhandled Exception: System.IO.FileN开发者_StackOverflow社区otFoundException: Could not load file or assembly '...'

Copying these .NET dlls to the directory that pythod_d.exe is contained in allows the .NET libraries to load successfully, but this is not a good long term solution. Is there an environment variable I have to set or some command line option to python_d.exe that will solve my problem?

Note that using IronPython or Python .NET is NOT acceptable.

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I think I've resolved the problem. Assembly loading doesn't use the path set by SetDllDirectory(), and it looks like Python calls this function. By registering a delegate for the event AppDomain.AssemblyResolve(), I can catch the name of the dll that failed, append it to the directory obtained from GetDllDirectory(), and then manually load the assembly myself.

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I have a little bit experience with this. I believe it's related to the path and init issues as stated in http://effbot.org/pyfaq/is-a-pyd-file-the-same-as-a-dll.htm.