DragSource Key: The string constant for looking up the drag source for a control using <code>getData(String)</code>. When a drag source is created for a control, it is stored as a property in the control using <code>setData(String, Object)</code>.
@since 3.4
See Implementation
DragSource Key: The string constant for looking up the drag source for a control using <code>getData(String)</code>. When a drag source is created for a control, it is stored as a property in the control using <code>setData(String, Object)</code>.
@since 3.4