Scrollable stacked canvases on tab pages

Question

I am in the design phase of a project and I have been building some 'mock-up'screens for the user to review. I have been trying to build a form which has a scrollable canvas stacked on a tab page.
This works fine, however there is a dynamic element to the page which is controlled by selection of a radio button, which displays another stacked canvas on top of the first one.
This all works well and good, until you try and scroll the first stacked canvas by its scroll bar. The content of the stacked canvas scrolls ok, but the second stacked canvas remains in situ and doesn't move.
I have trawled all the online documentation and both the Metalink and Technet fora, but can't find any guidance on this.
Am I trying to acheive something which Forms 6i can't do, or is there a bug, or am I missing something?
For your information here is what I'm running:
Forms: 6.0.8.8.0
WinNT: 4.0 SP5
RDBMS: 8.1.6.0
Here's a schematic of the form I'm trying to build....
| Content Canvas !
-------------+ !
! tab1 ! tab2 ! !
!------+ +------------------------------!
! ! Stacked canvas (scrollable) ^ ! !
! ! Radio Group (o) ( ) # ! !
! ! ! Stacked canvas (dynamic) ! # ! !
! ! ! Hidden or Displayed depending ! # ! !
! ! ! on above radio buttons. ! # ! !
! ! V ! !
Thanks in advance,
John G. Williamson

Answer 1

<BLOCKQUOTE><font size="1" face="Verdana, Arial">quote:</font><HR>Originally posted by carusab ():
I think a stacked canvas "stays put",
a stacked canvas has no relation to
another canvas so it will not "know" that
its "parent" canvas has moved.
I wish there were a WHEN-SCROLLBAR-* trigger
and that scrollbars would be objects of
their own... maybe in Forms7?
/Charles<HR></BLOCKQUOTE>
I suspect you're correct. I am going to have to something long-winded with 'set_item_property'. As you say, let's hope Forms 7 can cope with this.
Many thanks,
John
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