How to scroll to the end of a report

rbuser

Hi,

I am displaying a stored archive file in a Viewer.
What I need is to scroll in view the last page of the report using a one
page continued view.
I tried:

1. LastPage
2. Setting the scrollbar position

both in the AfterPrint event. No success.
Even when I place the code in the OnFormActivate-event (the report is
printed in OnCreate) it doesn't work.

How can I display the last page just after loading the file into the viewer?

Thanks and regards Uli

rbuser

Update:

That seems to work:

procedure TFaxPreviewForm.BefundViewerPrintStateChange(Sender: TObject);
begin
BefundViewer.Scroll(dtDown);
end;

Is there a better solution?

Regards Uli

nicocizik

Hi Uli,

Yes, this is the correct event to use however, rather than use the
Scroll routine, first check for Viewer.Busy, if not, make the call to
LastPage.

if not(BefundViewer.Busy) then
BefundViewer.LastPage;

rbuser

Nico,


Good hint. Thanks a lot.

BTW: when i open an archive file in a viewer, the cursor stays at
crHourglass for some seconds though the report is displayed completely
and immediately.
Does that mean, the viewer is still busy? And if so: what does the
viewer do, after the report has been displayed?

Best regards Uli

rbuser

Update:

I checked for Viewer.busy by using a timer. Seems to have another
reason. But it only occurs in two forms which use a viewer.

Regards Uli

nicocizik

Hi Uli,

This likely does mean that the thread generating pages is still busy.
When the report thread is complete, the Viewer.PrintStateChange event is
fired and the cursor is changed back to an arrow. The Viewer.Busy is
also returns false at this point.

rbuser

Nico,


As I mentioned I checked Viewer.Busy and it's false while the cursor
keeps crHourglass.

I tried that with a very simple and small report of one page. After
displaying the report and Viewer.Busy = false, the cursor keeps at
crHourglass for some seconds.

That's a litte bit disturbing because the user may wait to continue his
work, though it's not necessary.

Any ideas?

Thanks and regards Uli

nicocizik

Hi Uli,

Are you able to recreate this with an example I could run here. All
tests I try, the hour glass/spinning circle disappears once the report
is finished generating.

If possible, please send the example in .zip format to
support@digital-metaphors.com and I'll take a look at why it is behaving
differently.

rbuser

Hi Nico,


I'll try. The problem is, that it doesn't occur *always* and I don't see
a "rule".
And: from the moment I read your message, it didn't occur any more in
many tries.

Thanks and regards Uli