Subject Re: [IBO] Re: Quick Report
Author Jason Wharton
Thanks, this is what I suspected was going on. I hooked in the TIBOBCDField
at the TNumericColumn level. You think they should have recognized that
class too...

Oh well, I think I can also descend from TBCDField and still accomplish the
same thing. Being that all the pertinent methods are virtual this shouldn't
be a problem.

PS. I did this and it appears to work just fine...

Jason Wharton
CPS - Mesa AZ

----- Original Message -----
From: "Frank Ingermann" <frank.ingermann@...>
To: <>
Sent: Friday, February 23, 2001 1:21 PM
Subject: [IBO] Re: Quick Report

> Hi Jason,
> --- In IBObjects@y..., "Jason Wharton" <jwharton@i...> wrote:
> > I'm trying to track down the problem with TIBOBCDField and QR. Where
> can I get the sources to go through to find out why it is using the
> column name instead of the proper value? Do you have to purchase some
> sort of license to get their sources?
> yes, you'll have to buy a license from QUSoft ( in
> order to get a full source license.
> > Is anyone at liberty to look through their sources to help me out
> here? It seems to me that it must be doing some sort of hard cast to
> the TField( ) somewhere because that is the behavior of a raw
> ). The thing that most confuses me is that these methods are virtual
> so I think something else I can resolve might be going on.
> i'm afraid your suspicion is totally correct: the TQRDBText ctrl has a
> Print() method, and it has the following lines in it:
> if (Field is TFloatField) or
> (Field is TCurrencyField) or
> (Field is TBCDField) then
> FPrintCaption := FormatFloat(Mask, TFloatField(Field).Value)!!!!
> This of course gets Delphi to look at the wrong VMT to obtain the
> GetValue entry point... typecasting the way it's *NOT* meant to be!
> :-((
> (btw. they do this the same way for all integer & datetime fields!)
> only chance i see to wor
karound this is to restructure the IBOfields
> in such a way that the VMT entry point for GetValue will match that of
> TFloatField (---ouch! but should work...)
> regards,
> fingerman
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