Re: [Quickfix-developers] Custom FIX Message Types

[Andrei G. <an...@gm...>]

On Wed, Oct 8, 2008 at 9:15 PM, Malinka Rellikwodahs
<ael...@gm...> wrote:
> QuickFIX Documentation: http://www.quickfixengine.org/quickfix/doc/html/index.html
> QuickFIX Support: http://www.quickfixengine.org/services.html
>
>
> Data Dictionary is updated with values and correct I receive the message properly but when I try to cast them to the new type it fails

As far as I know, what you are trying to do is not possible in C#. You
cannot cast a reference to a base type into an derived type. In C++,
this can be done since you can cast everything into anything (you
might end up with a mess, but it is possible). As specialized message
classes in QuickFIX (e.g. QuickFIX44::NewOrderSingle) are just
wrappers around the same methods in  the QuickFIX::Message class, this
works perfectly in C++, but does not in C#.

However, there is still hope: if you rather have your custom messages
as specialized message classes in QuickFIX, the following post
explains how you can generate a customized QuickFIX version,  which
will allow exactly what you want to achieve:

http://sourceforge.net/mailarchive/message.php?msg_id=320836.47930.qm%40web31010.mail.mud.yahoo.com