French painter heading for salon door, maybe (7)
I believe the answer is:
ingress
'door maybe' is the definition.
(I know that door is a type of movable barrier)
'french painter heading for salon' is the wordplay.
'french painter' becomes 'ingres' (I've seen this in another clue).
'heading for' indicates taking the first letters.
The initial letter of 'salon' is 's'.
'ingres'+'s'='INGRESS'
(Other definitions for ingress that I've seen before include "Singers (anag.)" , "Admission" , "going in" , "The act of entering" , "Way in" .)