Suppose I have a cluster with controls of various datatypes on the front panel of one vi. Is it possible to represent that cluster with an icon, and then drag that icon on to the front panel of a second vi? The information in the cluster would then be available in the second vi.
You can't drag and drop a control to a running VI but what you can do is select the control, right click on it and select Copy Data. Then in the other VI, right click the control that you want to copy the data to and select Paste Data.