Abstract: The invention relates to a device for actuating a lifting and sliding roof with a cover (13) which is joined to a cover rocker arm (4) which has at least one guideway (6A; 6B) and into which a raising mechanism for lifting the rear edge (13B) of the cover fits, and which can be displaced by means of a rack/pinion connection to the rear over the fixed roof (14) of a motor vehicle. For stabile, rattle-free guidance of the cover (13), the raising mechanism is provided with a raising lever (3), one end of which is supported with a pivot axle (2) to pivot on a roof-mounted part (1) and on its other end there are two guide elements (3A, 3B) which are at different distances from the pivot axle (2) and which each fit into a guideway (6A, 6B) of the cover rocker arm (4), the guideways being of different slopes.