OpenEuphoria

Re: Eu 2.4, c funcs and ExoticaX

• Posted by Robert Craig <rds at RapidEuphoria.com> Sep 02, 2003
• 366 views

dm31 at uow.edu.au wrote:
> I've got a new version of the Perlin Noise Library coded
> (v0.5.1) which has had major rewrites done. However, for the 
> demo's that need to use ExoticaX, it works with Eu2.3 but not 
> Eu2.4, below is the error.
> 
> My question is, how do I fix the c func calling routines to 
> work with Eu2.4??
> 
> Cheers,
> Dan
> 
> Z:\My Documents\PNL\PNL-v0.5.0\dll.e:48 in function 
> define_c_proc()
> Invalid argument type
> ... called from Z:\My Documents\PNL\PNL-v0.5.0
> \DirectX\exotica_api.ew:713 in fun
> ction link_c_proc2()
> ... called from Z:\My Documents\PNL\PNL-v0.5.0
> \DirectX\exotica_api.ew:736 in pro
> cedure link_exotica_dll_routines()
> ... called from Z:\My Documents\PNL\PNL-v0.5.0
> \DirectX\exotica_api.ew:1105
> --> see ex.err

In 2.4, define_c_proc() and define_c_func() check
the argument types (and return type) that you specify
to ensure that they belong to the set of C_ or E_ constants
defined in dll.e. 2.3 quietly accepted any value as an
argument type, with possible incorrect results when
you actually called the C routine.

I don't have exotica_api.ew in front of me,
but if you have no idea about the correct argument types
for the C function, try replacing any bogus type values,
i.e. ones that are not in the range C_CHAR ... C_DOUBLE,
with (say) C_INT. Maybe someone with the code will have
a better idea.

Regards,
    Rob Craig
    Rapid Deployment Software
    http://www.RapidEuphoria.com