Error with DLL

rbuser

Hello.

First of all, let me explain our structure. We have 8 DLL to print
reports, each one print a different report with different tables. When I
open a DLL and print the report, as goes well. But when I open a second
DLL after, I got this error:

Exception EFilerError in module rtl100.bpl at 0002F867.

A class named TppDBPipeline already exists.


I cannot just make one DLL for all my reports. Can you help me please ?

Thanks.

JFPicard

nardmoseley

- Build each .dll with the 'build with run-time packages' option selected
and include the RB packages in the list.
- Build the .exe with the 'build with run-time packages' option selected and
include the RB packages in the list.

When the application runs, it should load the RB binaries only a single
time, otherwise you will receive that type of error.

Unless you need to call the DLL's from a non-Delphi app, I recommend putting
your custom code in Delphi packages.


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

rbuser

Hello Nard.

Can you give the list of the packages that I can put in 'build with
run-time packages'? I don't want to send packages that the license
forbids to do so. All my DLL are called from Delphi applications.

Thanks.

JFPicard

rbuser

Hi,

From what I understand each dll try to register the ReportBuilder
Components it needs to work properly. Try using getClass() to
test if a dll has already register a class.

Initialization
If Not Assigned(GetClass(TppDBPipeLine)) Then Begin
RegisterClass(TppDBPipeLine);
End;//If

...

PF



--- posted by geoForum on http://delphi.newswhat.com

nardmoseley

The ReportBuilder online help containts a list of RB run-time packages for
each RB Edition and Delphi version. (You can re-distribute RB run-time
packages. )

Acess the help, select ReportBuilder Reference | Table Of Contents |
Installation | Delphi X \ Y Edition, where X is the Delphi major version and
Y is the RB Edition you are using.

Rather than DLL's I recommend using Packages. It is much simpler, provides
the same benefits. The Delphi package architecture was a huge break thru in
technology. MS .NET copies that architecture - only they call it Assemblies.


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