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Resolved Datawindow Scrolling with Autosize Height (Powerserver Mobile)

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  1. Michael Hartnett
    Michael Hartnett
  2. PowerServer Mobile (Obsolete)
  3. Thursday, 23 August 2018 10:59 AM UTC

Hi All,

Hoping someone can help me with a problem I am having with a Mobile Distribution.  There seems to be a strange display/scroll issue with a grouped DW with an autosize height detail band.

I have a UserObject that displays 2 DWs, with approx. 70/30 vertical display split, i.e. top DW is 70% of UserObject height, bottom DW is 30& of UserObject height.

The bottom DW is a fixed height as it only displays a set of summary totals.  This retrieves and displays correctly.

The top DW has an autosize height detail band, which increases based on the amount of data retrieved for the detail row.  There can be quite large amounts of text blocks displayed in each row and as a result the detail band in most cases increases and is larger than that visible height of the DW.

The issue I have is that the vertical scrolling on the DW only scrolls the height of the expanded detail band.  In other words the scrolling seems to be stuck on the first detail row and only scrolls the height of the autosized row.  Even though I have 12-13 rows retrieved in the DW, I am unable to scroll beyond the first record!

Thanks in advance

Michael

  1. DataWindow
  2. PowerBuilder (Appeon)
  3. PowerServer Mobile
Appeon Mobile - problema con campo fecha
Mobile application cannot insert a record to the d...
Responses (2)
Michael Hartnett
Michael Hartnett Accepted Answer Pending Moderation
  1. Friday, 24 August 2018 08:41 AM UTC
  2. PowerServer Mobile (Obsolete)
  3. # 1

I should mention that this behaviour is there irrespective of the grouping on the DW.  I have removed all Grouping and the same behaviour persists.

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Chris Pollach @Appeon
Chris Pollach @Appeon Accepted Answer Pending Moderation
  1. Thursday, 23 August 2018 13:38 PM UTC
  2. PowerServer Mobile (Obsolete)
  3. # 2

Hi Michael;

   Sounds like you might have encountered a flaw in the way the DWO / DC behaves on a small device when large blocks of text are present when using the AutoSizeHeight option.

  If you can add some test data to your troublesome DWO in the DW Painter and then export the DWO source, I would then recommend opening up a Support Ticket for this issue. In the support ticket, make sure that you fully describe the mobile device, OS, its version, AWS version, etc for our support staff.

  In the meantime, a thought for a workaround might be to place a few CB's between the two DW controls that act like VCR buttons. In the "Next" & "Prior" buttons, use the ScrollToRow() command to force the upper DWO to the next or prior row vs usung the scrollbar. Hopefully, that will get you around this issue until Appeon can look deeper into this behaviour.

HTH

Regards ... Chris

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Michael Hartnett
  1. Michael Hartnett
  2. Friday, 24 August 2018 08:08 AM UTC
Thanks Chris,

I have done just that to work around. That works nicely.

The weird thing is that the behaviour is erratic depending upon the height of that DW1!!

If I increase it to 80% of the UO height, the scrolling works even if the full detail row is still too long, BUT for some reason there are large blank pages throughout the DW. If I increase DW1 to the full height on the UO, then the blank pages get even worse and only 2 of the 13 rows display correctly with the remainder of the DW being blank!

Definitely an issue there...will log it with Appeon.

TFYH

Michael
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Chris Pollach @Appeon
  1. Chris Pollach @Appeon
  2. Friday, 24 August 2018 12:49 PM UTC
Hi Michael;

Glad that the workaround did the trick!

Yes, sounds like some definite DWO / Scrolling issues. A support ticket will trigger a deeper look into this area for sure. Thanks for the extra feedback.

Regards ... Chris
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