DragDrop between 2 grids

[altagur]

I have two tunidbgrid and i want to dagdrop from one to another and from one to desktop. From computer to grid - hear exist sample based on html5 and it very useful - i did  dragdrop from computer to tunidbgrid. How do from grid to computer and from grid to grid? If use html5 then Where i can write draggable=true for tunidbgrid? Possible dragdrop example add to unigui examples?

For example drop file from unigui to computer and  dragdrop from unigui to unigui child pucture puzzle .