Re: [Quickfix-developers] quickfix & delphi

[Djalma R. d. S. F. <drs...@gm...>]

Hi Abel / Stefano,

It is possible to simulate classes in pure C by implementing structs with
function pointers.
Of course, in this situation some  global  variables and
initialization/unitialization functions are required.
See Winamp SDK samples, they do exactly that and the plugins can be written
and tested in Delphi (I read that somewhere when I was investigating a good
plugin architecture for my current application).

IMHO, it would be much easier to create a COM wrapper (DLL - inproc) for
Quickfix using ATL.
An example is MSXML, you can use it in Delphi and looks like OOP.

Djalma

On 3/27/07, Kline - Facchetti Stefano <s.f...@kl...> wrote:
>
> QuickFIX Documentation:
> http://www.quickfixengine.org/quickfix/doc/html/index.html
> QuickFIX Support: http://www.quickfixengine.org/services.html
>
>
>  Abel,
> It's not possible to make a C++ wrapper, in fact delphi VCL can load
> external procedure/function from only pure C dll.
> As workaround I have make a C wrapper with only static method and pointer
> (in pure C is not possible to use class), and I use them to interface
> quickfixlib object..
>
> If you can use Delphi .NET I suggest to use it.
>
> Abel Monroy ha scritto:
>
> Ciao Stefano,
>
> This wrapper solution is the one that we are thinking of now, but we are
> kind of lost here. Do you take the quickfix.lib library and make some C++
> classes in order to make the calls to the different classes and functions?
> You say a C wrapper, so, do you think that it's not possible to make a C++
> wrapper? I'm asking this because QuickFix everything is classes, so I can't
> imagine how you can make this wrapper without using classes (do you define a
> bunch of singleton or static objects, in order to be able to call the
> methods inside the classes? )
> Thanks in advance
> Abel
>
> Kline - Facchetti Stefano wrote:
>
> Hi Abel,
> I use quickfix with Delphi 6.. for do it, I write a C wrapper to quickfix
> lib and compile it into a dll..
> >From Delphi I use call to wrapper dll.. and all work ok..
>
> Stefano
>
>
>
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