继承与Item，用于创建显示大量相同控件，https://blog.csdn.net/qq_26611129/article/details/113933202

属性

  1. //元素个数
  2. count : int
  3. //代理
  4. delegate : Component
  5. //模型
  6. model : any     
  7. *A number that indicates the number of delegates to be created by the repeater
  8. *A model (e.g. a ListModel item, or a QAbstractItemModel subclass)
  9. *A string list
  10. *An object list
  1. Repeater{
  2. //        model: 3    //模型 数字：表示有几个模型/控件
  3. //        Rectangle{
  4. //            y: index * 50
  5. //            width: 100
  6. //            height: 40
  7. //            border.width: 1
  8. //            color: "yellow"
  9. //        }
  11.         //数量3 读取list的大小
  12.         model: ["button", "rectangle", "mousearea"]
  13.         Button{
  14.             y: index *50
  15.             width:100
  16.             height: 40
  17.             text: modelData + " " + index
  18.         }
  21.     }

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