dragCopy

defines that a row is copied to a target during drag-n-drop

dragCopy?: boolean;

Example

const source = new dhx.TreeGrid("treegrid-source", {
    dragMode: "source", 
    dragCopy: true
});

const target = new dhx.TreeGrid("treegrid-target", {
    dragMode: "target", 
    dragCopy: true
});

Related sample: TreeGrid. Drag-n-drop copy