AV using RBuilder inside DLL

rbuser

I would like to use Report Builder inside an ISAPI DLL running in IIS.
When I do so I get an AV.
The same code runs fine in an exe - prints out to an html file.
Using D6 and Rbuilder 7.03 with TExtraDevices

Gerald

nardmoseley

--------------------------------------------
Article: ReportBuilder and Web Applications
--------------------------------------------

There are two basic approaches to using ReportBuilder to implement web
applications.

1. ReportBuilder Server Edition

Live Demo: www.digital-metaphors.com/RBServerLive

Features:
http://www.digital-metaphors.com/Subpages/Products/Server/Features.html


ReportBuilder Server Edition contains the most comprehensive,
productive,high performance solution available. The Server Edition enables
you to build a multi-tier web solution within a few hours of installating
the product. Spend an afternoon with the trial version to evaluate it. The
Server has the ability to incrementally generate pages on demand and the
WebTier performs session management, caching, and generates a high quality
xhtml/javascript
report previewer.

The demos included with RB Server Edition contain examples of using the RB
Server's WebTier component within Delphi Web Broker apps: ISAPI, ASP .Net,
Apache.


2. Build your own

The other approach to implementing publishing reports to the web is to use
any of the ReportBuilder Editions to impelement your own web solution.

a. Make sure that you provide a thread-safe container for the report to
execute. (See the online topic for Report.BackgroundPrintSettings, it
contains some good information about thread safety).
b. Make sure that no dialogs are displayed by the report (i.e. set
Report.ShowPrintDialog, ShowCancelDialog, etc to False.
c. Set Report.EnableProcessMessages to False.
d. Start with a simple, non databased report that contains perhaps a single
label and then incrementally build from there.

The simplest solution to implementing your own server is to generate the
reports to PDF return them (or a link to them) to the web browser. A more
complex solution would involve creating a custom report viewer as is done by
ReportBuilder Server Edition:

www.digital-metaphors.com/RBServerLive




--

Nard Moseley
Digital Metaphors Corporation
www.digital-metaphors.com