dragCopy

Optional. Defines that an item is copied to a target during drag-n-drop

dragCopy?: boolean;

Example

const treeSource = new dhx.Tree("tree-source", {dragMode: "source", dragCopy: true});
const treeTarget = new dhx.Tree("tree-target", {dragMode: "target", dragCopy: true});

Related sample: Tree. Copy dragged item

note

Don't forget to enable drag-n-drop via the dragMode property to use dragCopy.