Yes.

If you want autosorting there are libraries available from Deadron and AbyssDragon that should do the trick. Both of those developers provide excellent work.

If you want drag and drop sorting (like in my Darke Dungeon project) then you need to override the obj's MouseDrop() proc, see if they are dropping on the inventory panel, check to be sure that both the src and the target obj are in the mob's contents, then swap their positions in the contents list.