This is a scene from the production "Cigarettes for the Troops" which was being performed at the Majestic Theatre. Stanley Meredith and Kit Smart are the actors on stage.
There is a handwritten inscription on the back of the photograph.

""Cigarettes for the Troops" shows at the Majestic Theatre, London, Ontario". Ivey Family London Room Digital Collections. London Public Library. images.ourontario.ca/london/2303563/data