Are single-button mice still on Macs?

Question

User interface

The program is written under Windows with a backlog under OSX. Mack, of course, never saw. Do you expect a Mac to have at least two mouse buttons?

Answer 1

one-button is now the lot of oldfags.

Answer 2

At any time, you can turn on a one-button mouse)
So that OS X should have support.
Make an extra. imitation of the right button CTR + click

Answer 3

When adapting to OS X, you still have to read the platform guidelines, all these cases are described there. Do not forget that many people under OS X do not use not only the second mouse button, but also clicks in general, but use tap / force-touch inpat.