import Qt 4.6 Item { property var period : 250 property var color : "black" id: root Item { x: root.width/2 y: root.height/2 Rectangle { color: root.color x: -width/2 y: -height/2 width: root.width height: width } rotation: NumberAnimation { from: 0 to: 360 repeat: true duration: root.period } } }