useDragLayer

React DnD 新手？ 在进入文档之前请阅读概述

useDragLayer

use Drag Layer 钩子允许你将组件连接到 DnD 系统中作为一个 drag layer(拖动层) 。

import { useDragLayer } from 'react-dnd'

function DragLayerComponent(props) {
  const collectedProps = useDragLayer(
    monitor => /* Collected Props */
  )
  return <div>...</div>
}

参数

• collect: 必需. The collecting function. It should return a plain object of the props to return for injection into your component. It receives two parameters, monitor and props. Read the overview for an introduction to the monitors and the collecting function. See the collecting function described in detail in the next section. 收集函数。它应该返回 props 的plain对象以注入到你的组件中。它接收两个参数，monitor 和 props。阅读 overview 以了解监视器和收集功能的介绍。请参阅下一节中详细介绍的收集函数。

返回值

从 collect 函数收集的属性的对象.