C libraries in xcode Project3

[pete mac]

I'm using a 3rd Party SDK that has source code for a few different languages. I chose the SDK_C language.

My first issue is that I need to import windows.h and I can't figure out how to do that in Xcode.

My question is: Is there a work around for this?  I have started to typedef a lot of constants like DWORD etc., but it seems to me that I'm reinventing the wheel and there should be a better way.

Any comments or help would be greatly appreciated.