Meaning of 'only then'
Is there any difference in meaning between
check that newSnap != m_snap and invoke onSnapEnter only then.
and
check that newSnap != m_snap and invoke onSnapEnter only in that case.
?
Which is the correct way of expressing that the checked condition must fulfil, and not merely predate the invocation?
check that newSnap != m_snap and invoke onSnapEnter only in that case. is not idiomatic.
check that newSnap != m_snap and invoke onSnapEnter only then. has the wrong word order.
It should be check that newSnap != m_snap and only then invoke onSnapEnter.