Hi christian
thank you for the reply.
i already used vfp scrollbars on containers(classes from sps weblog and kirov site).
these tested and works as well and can see relative codes in my blog:
http://yousfi.over-blog.com/2015/12/testing-a-vfp-scrollbar-container-class-application.html

the flatscrollbar activeX (oleclass="MSComCtl2.FlatScrollBar.2") can embedded on form and works.its some old (as vfp).
i google search and dont found any vfp developpment on this scrollbar.
as i said when scrolling (up/down) and return to min position (scrollbar.value=zero), its not the last one and so.
it dont save the initial position of many objects in a container.
the solution i found is to create a cursor, saving all initial objects positions (top position for vscroll or left for hscroll for each object).
when i reach the min value i restore the positions from that cursor.

for ex for saving initial positions :

Create Cursor yVcurs1 (xtop i)
  With Thisform.container1
	For Each loItem In .Controls
		Try  &&if the control have a top property otherwise error.
 		Insert Into yVcurs1 Values (loItem.Top)
		Catch
		Endtry
		Next
  Endwith
 *brow
Locate 

Note:I found this day in vfp xsource a scrollable container class named "taskListUi.vcx".it can also help me