He appeared in close to eighty films, with his best remembered role being the stationmaster Roubaud in Jean Renoir's La BĂȘte humaine (1938), but he remained primarily a theatrical actor for the duration of his career.
Ledoux was married to Fernande Thabuy, with whom he had four children; he was an amateur painter, and lived for many years at Pennedepie in Normandy.
Later he moved to Villerville, where he died and where he is buried.