procedure TForm1.ListBox1DragDrop(Sender, Source: TObject; X, Y: Integer);
 	   begin
 	     with (Sender as TListBox) do
 	         Items.Move(ItemIndex,ItemAtPos(Point(x,y),True));
 	   end;

 	   procedure TForm1.ListBox1DragOver(Sender, Source: TObject; X, Y: Integer;
 	   State: TDragState; var Accept: Boolean);
 	   begin
 	     Accept := (Sender=Source);
 	   end;