ReposrtDesigner Access violation on closing

rbuser

Hi,

I am using ReportBuilder 15 and often (but not always) get an access
violation when closing the report designer at runtime.

I have a TppDesigner component on a datamodule form that is opened as
follows:

ProcessOptions; //Create datasources with some data so preview works
//Set up stanard setting for the report
Utils.ConfigureReport(TheReport,ReportName,'A report title');
DataModule1.ReportDesigner.Report := TheReport;
try
DataModule1.ReportDesigner.ShowModal;
finally
Close; //This is when error occurs
end;

The call stack on the access vioslation (going backwards is)

TList.Get
TppCustomReport.GetTheBand
TppCustomRTeport.SetReportDesigner
TppDesignerWindow.SetReport
TppDesignerWindow.Notification
TComponent.RemoveFreeNotifications
TComponent.Destroy
TppCommunicateor.Destroy
TppRelative.Destroy
TppProducer.Destroy
TppCustomReport.Destroy
TppReport.Destroy
TObject.Free

Any ideas on what I am doing wrong?

Thanks

nicocizik

Hi Steve,

Looking at your call stack and code, it appears you have your report on
your form but the designer on a data module? It is generally best to
keep the two components in the same "container" however not completely
necessary.

My best guess is that this is a destroy timing issue in some instances.
I would suggest setting the Designer.Report property to nil before
closing the form to be sure the destroy sequence executes cleanly.

try
DataModule1.ReportDesigner.ShowModal;
finally
DataModule1.ReportDesigner.Report := nil;
Close; //This is when error occurs
end;

rbuser

In article <55ad2bb3$1@mail.>, support@digital-metaphors.com says...


Nico,

Thanks for the reply - seems to have done the trick!

However, I am now consistently getting a memory leak reported every time
I use the report designer at runtime when quitting the application:-

1-12 bytes TppMRUTemplateItemCollection x 1
TMoveArrayManager x 3
x 3
unknown x 2
13 - 20 bytes TList x 1
Unicodestring x 1
21 - 28 bytes TObjectList x 1
Unicodestring x 5
unknown x 1
29 - 36 bytes TList x 3
TFontsettings x 17
Unicodestring x 3
+ more (including TppTBMRUListString, TppMRUList, TppTBCustomItem,
TppTBXSeperatorItem, TppTBXItem, TBXMRUListItem, TppDesignFileMenu

Do I need to explicitly free anyobjects after calling the
reportDeisgner?

Thanks

Steve

nicocizik

Hi Steve,

Are you able to recreate this with a simple example I could run here
using only Delphi and RB components? If so, please send it in .zip
format to support@digital-metaphors.com and I'll test with the latest
version of ReportBuilder.