Lisp Question - entsel

When selecting an entity with entsel, e.g.
(setq ent (entsel "\nSelect entity: "))
in the event of a null pick, is there any way to establish whether the user
clicked on an empty area of the screen, or whether the user hit 'return' on
the keyboard (or right-clicked on the mouse)?
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Check out the ERRNO variable; 7 = bad pick, 52 = rt click/enter. ___
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Paul Turvill
Thanks Paul.
Good to see you still frequent this ng (I've been away for some considerable time).
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