dragCopy

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

dragCopy?: boolean;

Example

const source = new dhx.Grid("grid-source", {
    columns: [
        // columns config
    ],
    dragMode: "source", 
    dragCopy: true
});

const target = new dhx.Grid("grid-target", {
    columns: [
        // columns config
    ],
    dragMode: "target", 
    dragCopy: true
});

Related sample: Grid. Drag-n-drop copy