[Dev-C++] Dev-C++ Question

I have a project that I've been developing in VC6.  It's a Win32 api
project with no proprietary VC6 code or macros or MFC or anything.  When I
compile and execute it in VC6 it works fine, but when I move the source
files to DEV-C++ I get compile errors from some of the API calls.

Any suggestions as to what's wrong?

Thanks for the help.

Sean Campbell