gtk:icon-view-set-drag-dest-item (view path pos)

view -- a gtk:icon-view widget
path -- a gtk:tree-path instance of the item to highlight, or nil
pos -- a gtk:icon-view-drop-position value which specifies where to drop, relative to the item

Sets the item that is highlighted for feedback. The gtk:icon-view implementation is deprecated since 4.10. Use the gtk:grid-view implementation instead.