Can I link Microsoft C++ DLLs with Watcom C++?
Yes, this is possible but only if you have Watcom C/C++ version 10.5 or later. However, to link with a Microsoft DLL, you must create the import library using Microsoft’s librarian. The reason for this requirement is that while wlink understands Microsoft import libraries, wlib does not understand Microsoft DLLs (and thus, cannot be used to generate an import libraries from Microsoft DLLs). Refer to Document #44623 Using Visual C++ EXEs and DLLs with Power++ and Watcom C/C++. With versions 10.0 and earlier, linking a Microsoft C++ DLL with Watcom C++ is not possible.
