[rdnzl-devel] Rdnzl Problem

[Edi Weitz]

On Fri, 01 Feb 2008 18:19:29 -0500, Michael Mills <mikaelmills at gmail.com> wrote:

> I'm having a problem with RDNZL using ECL. I'm using a send a (lisp)
> string to the simple .net gui through a callback. It most works, but
> the string gets mangled when it goes into .net.
>
> The .net consumer looks like this:
> EditBox_Results.Text = cpc(TextBox_Filename.Text);
> where EditBox is a rich textbox, and cpc is a "public delegate
> System.String callback(string input);" which is set in the
> constructor.
> The list invocation looks like this:
> [Application.Run (new "CPC_interface" (new "callback" #'(lambda
> (filename) (pretty-print-cpc filename t)) ))]
> where CPC_interface is my .net gui, and pretty-print-cpc is defined as:
> (defun pretty-print-CPC (filename &optional (echo nil))
> (handler-case
> (let ( (result (calculate-page-coverage filename)) )
> (format echo "Cyan: ~$ %~%Magenta: ~$ %~%Yellow: ~$ %~%Black: ~$
> %~%Total Byte Count: ~a"
> (* 100 (car result))
> (* 100 (cadr result))
> (* 100 (caddr result))
> (* 100 (cadddr result))
> (car (cddddr result)) ))
> (file-error () "File Not Found") ))
>
> for the test files I run it on, the result of pretty-print-cpc is:
> Cyan: 37.50 %
> Magenta: 37.50 %
> Yellow: 37.50 %
> Black: 12.50 %
> Total Byte Count: 32
>
> however the .net gui is displaying that as:
> ???????
>
> As I mentioned before, I'm using ECL is my lisp. I'm compiling the
> .net part using Visual Studio 2005 C# targeting version 2 of the
> .net framework.

I don't have ECL myself, but here are some things you could check to
isolate the problem:

1. Can you run the Apropos example that comes with RDNZL without
   problems?  It uses a delegate with the same signature.

2. Does your application work if you use LispWorks instead of ECL?

And which version of ECL are you using, BTW?

Cheers,
Edi.