Problem with Rb using Variables in IW

rbuser

Last year (09/28/10) I started a thread about this topic. Not wanting to
sound like a rant but I didn't get any usefull answer, only Ed Dressel
asked what the error was and then nothing else.

I use RB to generate a PDF, save it to the temporary folder of the
session and show it on the Web Browser. I have been using this for some
time without problems *only* when I use Variables on the report it
doesn't work.

The error I always get is:

Project WebOL.exe raised exception class ECodeError with message 'Not
possible to compile the program: Variable2OnCalc'. Process Stopped.Use
Step or Run to continue.

I'm using
RB Enterpise 12.04 build 77
Delphi 6 Build 6.240 UpdatePack 2
Intraweb 10.0.7

also, I'm using DM's encrypted PDF output as I find it to be better than
the TExtraDevice's.

I believe that I am forgeting something, to declare a unit in the uses
clause or something equally dumb. But I just can't find out what it is.

A example of the code I use:

If Exames_do_Laudo['IDEMS'] = 1056 then
Begin
DBText1.Visible := True;
DBText3.Visible := True;
DBText13.Visible := True;
End else
Begin
DBText1.Visible := False;
DBText3.Visible := False;
DBText13.Visible := False;
End;


What is so diferent in the report when I use a variable with some RAP
code?


Andrew

nicocizik

Hi Andrew,

I'm very sorry you did not have a good experience in the past with our
support.

The error implies that the RAP code associated with the Variable2 OnCalc
event has an error. If you select the Calc tab and view this code, is
it compiling correctly? Does it give an error message?

Is the code you posted located in the OnCalc event of a variable? It
would seem a better place to perform this action would be the
Band.BeforePrint event.


Regards,

Nico Cizik
Digital Metaphors
http://www.digital-metaphors.com

rbuser

Hi Nico,


Yes, it's the code I used as an example. The problem is not where I use
it or where I use it, but using it. If I put a RAP code wherever, it'll
give an error. It compiles ok and works in any other place but my
Intraweb module. That's the reason I want to know what I'm possibly
forgetting to use/do in the app. I have an impression that I'm missing
something so basically simple that it makes me sick that I can't find it
(well, that and the clients bugging me about this). That's why I want to
know more about what exactly I should put in the uses clause or whatever
else I can do to make it work. When I tried with the guys at Atozed they
said that it should work exatly the same as everything else, IOW the
report works so it's something I missed.

Regards
Andrew

nardmoseley

Have never heard this before. If I understand correctly, you are saying that
if you put any RAP code in a Report and place the report in an Intraweb
module, then you get ECodeError? How about if you create an empty report
layout with no datapipeline and put a single empty RAP event-handler in the
report. Does that cause the error?

ECodeError is raised by TraCodeModule.CompileProgram, when it cannot compile
a RAP program. So try the above test to determine whether RAP can compile
and empty event-handler.

The biggest difference with IntraWeb is that you have to provide a
thread-safe environment for the report. The RBuilder help topic for
TppReport.BackgroundPrintSettings includes details about providing for
thread-safety.



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

rbuser

Nard,


Exactly, as wierd as it may seem.


It's a start, I'll try this and see what happens.


Thanks. I'll read more about this and will be back on this topic. This
next week I'll be on a client, but the week after I'll examine this
closely.

Thanks again.
Andrew