gtk:icon-view-dest-item-at-pos (view xdrag ydrag)

view -- a gtk:icon-view widget
xdrag -- an integer with the position to determine the destination item for
ydrag -- an integer with the position to determine the destination item for

path -- a gtk:tree-path instance of the item
pos -- a gtk:icon-view-drop-position value

Determines the destination item for a given position.