4 width: 400; height: 480
13 width: 400; height: 120
17 onPressedChanged: pressed ? yellow.color = "lightyellow": yellow.color = "yellow"
22 width: 400; height: 120
27 onPressed: blue.color = "lightsteelblue"
28 onCanceled: blue.color = "steelblue"
34 width: 400; height: 120
38 onEntered: { red.color = "darkred"; tooltip.opacity = 1 }
39 onCanceled: { red.color = "red"; tooltip.opacity = 0 }
44 width: 100; height: 50