Sliding and casement window

The utility model relates to a sliding and casement window, comprising external window frame installed on a wall, and one fixed-rail set on each of the upper and lower edges of the external window frame, wherein each fixed-rail set comprises a fixed rail on the internal side and a fixed rail on the external side, each fixed rail is provided with a movable rail which is movable along the rail direction, and a window leaf is installed between the upper and lower movable rails on corresponding internal or external side and is rotatably connected to the movable rails through a rotation-supporting component. A rotation-restriction component is arranged between the window leaf and the movable rails for locking the window leaf and preventing the outward or inward movement of the window leaf when window open mode shifts to a sliding mode. The rotation-supporting component and the rotation-restriction component are installed in different locations on the window leaf along the width direction of the window leaf. The sl