dragCopy
Optional. Defines that an item is copied to a target during drag-n-drop
Default value: false
dragCopy?: boolean
Example
const source = new dhx.List("list-source", {dragMode: "source", dragCopy: true});
const target = new dhx.List("list-target", {dragMode: "target", dragCopy: true});
Related sample: List. Drag-n-drop copy