Access violation when using run-time packages

rbuser

Hi,

I'm with Delphi 7 Update Pack 1, ReportBuilder 9.02 clean install, Windows
XP. I've built my application with run-time packages.

Now, each time I try to save a Report template after editing it (using
ppDesigner), I get an Access Violation with rbRCL97.bpl. Read of 00000000. I
know it means it's trying to access a NIL pointer, but I don't know where
exactly. What I was trying to do is to add a OnDrawCommandClick in RAP
editor.

If I just try to save it without editing, I get an Access Violation on
rtl70.bpl...

I didn't change any ReportBuilder source, I did a clean reinstall. I tried
to rebuild without run-time packages, to be able to trace the source and it
seems to occur on the WriteToStream call...

David

rbuser

I'm tracing it deeper and I found that FPrinterInfo isn't correctly fed.

David


"David Caouette" a ?crit dans le message de

rbuser

FINALLY, I found it.

Calling ppPrinters.Refresh prior to ppDesigner.ShowModal was causing the
error... Now, my question is :

WHEN should I call ppPrinters.Refresh ???

David Caouette


"David Caouette" a ?crit dans le message de

nicocizik

Hi David,

Looking at the RefreshPrinters procedure, it looks as though it begins by
freeing the uPrinter variable then clearing the existing printer list before
reconstructing the list from scratch. If I were to guess, I would say
ReportBuilder needs a valid reference to the uPrinter variable after the
ShowModal event is fired. I would suggest experimenting with certain events
to see if you can find the right time to safely make this call. After the
template has been loaded or just before the report is printed would be a
good place to start.

--
Regards,

Nico Cizik
Digital Metaphors
http://www.digital-metaphors.com