Not really correct.
SFML apps are not specifically event driven. Usually the main application loop will do an inner event loop for some things like resizing the window or doing event based keyboard/mouse stuff, but the events are not used for game state or rendering (and input can also be done without events).
Events only happen when something like a key is pressed or something happens to the window, but a game needs to run continuously, faster than events come in. So it's not like an event based application like Winforms or similar.