Access Violation

rbuser

Some times an access violation is raised when some reports is print. (It
seems that it's always the same report)

My customer is angry but I didn't find where is.

Can you help me very very soon ?

I use delphi 5 entrepise and rb build 5.56 enterprise version.

digitalmetaphors

Could you provide more information about this report? What is happening in
the report's event handlers? Can you reproduce the problem on your machine?
Start reducing the complexity/components from the report until the problem
goes away. Then you can start trying to research what happens when you add
one condition to the report, which causes the av.


Cheers,

Jim Bennett
Digital Metaphors

rbuser

I have seen AVs after making changes in my table structure or persistent
fields in my dataset. It seems that I can avoid the AVs if I remove and
recreate the persistent fields in the dataset, then remove and recreate the
fields in the datapipeline.

It would be a lot easier to troubleshoot if ReportBuilder issued an error
instead of an AV. AVs shouldn't happen in shipping software.

Richard

digitalmetaphors

Yes, if you chagne the dataset sturcture, you'll want to be sure to recreate
the fields on the data pipelines. You should be able to toggle the
AutoCreateFields property to recreate the fields. If this doesn't work, then
you'll have to delete the pipeline and create a new one on the form.


Cheers,

Jim Bennett
Digital Metaphors


"Richard Biffl" wrote

rbuser

Jim,

Our template are stored as file.

To print them, we make a loop between all of this template.
We use only one instance of the Tppreport object. We call some functions to
reinitialize all.
Do you see some problems related to the way that we use ?

digitalmetaphors

You should have no problem looping through the report templates in a list,
and loading them in to a TppReport object, then calling print. What
functions do you call to reinitialize? Are you assigning any Delphi event
handlers for each template that you load? Can you debug what function call
is raising the AV?

What is different about the reports that cause the AV? Can you recreate the
AV by only running one report in a separate test project?


Cheers,

Jim Bennett
Digital Metaphors

rbuser

digitalmetaphors

OK, then there must be an event handler getting assigned for one of the
templates that is meant for another template? Is this a possibility? Do
you have any event handlers that are specific to one report template, and
not others?

You are calling Report.Reset, so are you manipulating the datasets between
each run of the report? I'm guessing that you have queries and datapipelines
on your form, and that you are usign thse for all reports? Try closing the
queries before running the next report.


Cheers,

Jim Bennett
Digital Metaphors