You can do it (to a limited extent) but I've never tried as the information you can get is pretty useless to you. Why? Because unmanaged DLLs do not contain parameter lists like managed assemblies do, so a list of DLL functions is just that: the names with no other information.
There are tools to retrieve those names: Dependancy Walker
] is a very useful one, but in order to use the names you can retrieve, you still need to look at the documentation. So to be honest, you are probably better off starting with the documents in the first place!