Problem: zmq_fd_t not used/available in zmq

[gummif]

Solution: Make zmq::fd_t available and use in poller_event

This is currently available as zmq::sockopt::cppzmq_fd_t, so this is techincally a breaking change. I could add a typedef there for backward compatibility reasons if requested.

[sigiesec]

This is currently available as zmq::sockopt::cppzmq_fd_t, so this is techincally a breaking change. I could add a typedef there for backward compatibility reasons if requested.

Yes, please add a typedef. It's easy to avoid breakage that way, so even if it's unlikely, we should do that. You might add a comment that using zmq::fd_t is preferred. (I think ZMQ_DEPRECATED doesn't work there?)

[sigiesec]

This is still breaking the Windows builds at

  C:\projects\cppzmq\zmq.hpp(1398): error C2062: type 'int' unexpected [C:\projects\cppzmq\Build\tests\unit_tests.vcxproj]

Could you give that another look?

[gummif]

Finally took a look at this, don't know if there is a good way to do this so just used a comment.