"William Xu" wrote:
> Yes, it's more like a smob type pointer. Consider this,
>
> void bar(unsigned char *s)
> {
> printf("s = %s\n", s);
> }
>
> One problem is that how i create and pass a `unsigned
> char*' parameter to `bar'. If SWIG requires me to write
> smob creation myself, that's a pain...
AFAICT you have to write a C constructor:
unsigned char *
make_one_thing (int dim)
{
unsigned char * p = malloc(dim);
put_something_in(p);
return p;
}
and SWIG will generate the Scheme/C wrapper, something
like:
static SCM
_wrap_make_one_thing (SCM s_0)
{
unsigned char * result = 0 ;
int arg0;
SCM gswig_result;
arg0 = scm_to_int(s_0);
result = (unsigned char *)new_matrix(arg0);
gswig_result = SWIG_NewPointerObj (result,
SWIGTYPE_p_unsigned_char, 0);
return gswig_result;
}
so you do not have to write the SMOB driver.
--
Marco Maggi
"They say jump!, you say how high?"
Rage Against the Machine - "Bullet in the Head"
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