Re: [Chicken-users] Calling routines in kernel32.DLL

[Thomas Chust]

On Sun, 9 Jul 2006, Chess Player wrote:

> --- Kon Lovett <address@hidden> wrote:
>
> > On Jul 7, 2006, at 6:16 PM, Chess Player wrote:
>
> > > How would I call the DLL routine "SetConsoleCursorPosition"
> > > in Chicken?
> >
> > AFAIK you can't. The entire Chicken interface to dynamic loading is
> > oriented to loading Chicken libraries. [...]

Hello,

I think this comment is only partially true. And CHICKEN certainly does 
not prevent you from using external C functions in your Scheme code.

You may want to have a look at the lazy-ffi egg (refer to [1] for further 
information) if you need fully dynamic interfacing to native code. I must 
admit, though, that I don't know whether lazy-ffi will work on a Windows 
platform.

What should always work is creating wrappers for the functions you want to 
import using the builtin foreign function interface of the CHICKEN 
compiler (refer to section 6 of the manual [2] for further information) 
and make those wrappers into an extension library which can then be used 
in both compiled and interpreted code.

cu,
Thomas


[1] http://www.call-with-current-continuation.org/eggs/lazy-ffi.html
[2] 
http://www.call-with-current-continuation.org/manual/Interface-to-external-functions-and-variables.html