I understand the difference and that a DLL won’t open on mac. In the initial post above, it wasn’t clear to me how to access the API they provided as on a previous Windows-based project (using a frame grabber from a different manufacturer), I was given a DLL to work with and that worked (in Windows).
The board manufacturer has since gave me the source code to a windows DLL that accesses their API (which exists on the mac). I’ve had this ported to mac, and have some additional questions, here.