Here are patches to compile the w32api import libraries with the PCC compiler and use the header files with the PCC compiler.
Patch to w32api for pcc compiler
Only windef.h and winnt.h are affected?
We are removing support for any compiler other than GCC and will not accept any patches that try to do otherwise. You are free to copy and modify the MinGW.org library set including adding procedures to keep your copy up-to-date with changes in the repository.