ClistCtrl child window positioning problem.

hi all, 

i am trying to develop a clistctrl which having  process ring in all items.Here is a problem in positioning of process ring in vertical scrolling and horizontal scrolling .Pls help.

demo code is in

https://drive.google.com/file/d/0B5n6cYhn2ARTY2dRS3JIR0VOVEk/edit?usp=sharing

Please remember to mark the replies as answers if they help and unmark them if they provide no help , or you may vote-up a helpful post