Listview's sorting problem of Icon Style

Hi.
As Fred already posted
(here : {2})
Listview's sorting properties is working on non Icon style.
But I tested Fred's sample Listviews of Icon style, it's not working.
Sorting of Listview's Icon style is still not working?

This is from {2}:

Because the LVS_LIST and LVS_REPORT views display items in the same order as their indexes, the results of sorting are immediately visible to the user. The LVS_ICON and LVS_SMALLICON views do not use item indexes to determine the position of icons. With those views, the results of sorting are not visible to the user.

Thanks, Owen.
Mm...
I need to do something for sorting ListViews Icon.