Device for moving operating or closing members of a window or door frame movable swing, the device being activated by rotation of a handle pin and comprising a body containing a mechanism transforming the rotation of an element coupled with the pin in translation of a slider coupled with an operating or closing rod, said body being housed in a seat of movable swing side profile, an auxiliary body movably mounted on the body along a direction parallel to the movable swing side and orthogonal to the slider translation direction, the auxiliary body having an abutment with a profile plane serving as reference for positioning the body in the seat, one threaded stem, extending parallel to said auxiliary body movement direction, being inserted in an auxiliary body through-hole and engaging in a body threaded hole, and a spring mounted on the stem between the auxiliary body and the body.