AV in TppListView.WMNotify

rbuser

Hi,

I've spent hours trying to find why, but I got a serious problem here...

I create my RB object in code like this :


report:=TppReport.Create(Self);
ReportDesigner:=TppDesigner.Create(Self);
ReportDesigner.Report:=TppReport(pObject);
ReportDesigner.DataSettings.SessionType:='dbExpressSession';
ReportDesigner.DataSettings.DatabaseName:=pDatabaseName;
ReportDesigner.DataSettings.DatabaseType := dtInterbase;
ReportDesigner.Show;

When I got to the Data tab, select File/New and Query designer, I got an AV
like EAccessViolation with message 'Access violation at address 77E778DA in
module kerlen32.exe at the begining of TppListView.WMNotify

I'm running on Windows XP, my database is Interbase 6.01 with DBExpress
driver

Thanks,

Pascal

rbuser

Hi again,

I probably found where the AV come from... it occur only when I include the
XP Manifest in my project (to work with XP Theme).

Perhaps there is a bug between your components and XP comctl ?

Regards,

Pascal

digitalmetaphors

Yes, it is the XP manifest. Here is an article I found
http://delphi.about.com/library/bluc/text/uc111601a.htm

At the bottom it states

"Warnings
Microsoft warns all developers that they have in fact eliminated a lot of
the support code in the comctl32.dll library, and that you should always
test thoroughly to ensure all aspects of your controls work properly before
distribution. It has been my experience that there are in fact some
compatibility issues with Delphi. So far, the only discrepancy I have found
was in the TListView component. If you use the TListView component with the
view style of vsReport, you run into a problem using the TColumns property.
During runtime, you will generate a kernel error if you attempt to use
column headers with said view style"

We rely on the TListView as an ancestor. If TListview doesn't work then
we're currently out of luck on this one. Thanks for letting us know about
the issue. We haven't yet tried taking this approach to distributing to XP
before so we never received the error before. For now you'll have to build
without the XP Manifest.

Cheers,

Jim Bennett
Digital Metaphors