“You’re stunning,” an admirer shouted out at the Paris Theater on Thursday night, when Catherine Deneuve, the undisputed queen of international cinema took the stage. In bulk-enhancing horizontal striped mink, a standout among the others of the French delegation, her first words were, why was the mike given to me? And then poised and elegant she welcomed the crowd to the opening night feature, On My Way. The focus of every frame, she stars as an aging beauty queen on a road trip in rural France. As daffy as that premise could be, Deneuve pulls this romp off with comic aplomb: after a lover’s betrayal, Bettie sets out in search of serenity and a good smoke. A man with sausage fingers rolls a cigarette in excruciating slow motion. Bettie has a one-nighter with a guy half her age, a photo shoot during which she faints, a bonding with her adorable grandson, a surprising rapprochement with family, and a romance. It was only later I found out, the French find this movie serious.