x, y), relative to bin_window coordinates.
See gtkIconViewGetItemAtPos, if you are also interested in
the cell at the specified position.
See gtkIconViewConvertWidgetToBinWindowCoords for converting
widget coordinates to bin_window coordinates.gtkIconViewGetPathAtPos(object, x, y)objectGtkIconView.xyGtkTreePath] The GtkTreePath corresponding to the icon or NULL
if no icon exists at that position.