Hi,
On Aug 5, 9:32 pm, Nobody <nob...@nowhere.com> wrote:
> I don't know about methods, but it works for functions.
>
> > Sample code:
>
> > ...
> > G_set_error_routine(byref(self._print_error))
>
> This won't work; you have to be more explicit, e.g.:
>
> errtype = CFUNCTYPE(c_int, POINTER(c_char), POINTER(c_int))
> errfunc = errtype(print_error)
> G_set_error_routine(errfunc)
the C function is defined as
G_set_error_routine = _libs['grass_gis.
7.0.svn'].G_set_error_routine
G_set_error_routine.restype = None
G_set_error_routine.argtypes = [CFUNCTYPE(UNCHECKED(c_int),
String, c_int)]
I defined in Python function print_error()
def print_error(self, msg, type):
print msg, type
and
errtype = CFUNCTYPE(UNCHECKED(c_int), String, c_int)
errfunc = errtype(print_error)
G_set_error_routine(errfunc)
unfortunately the application crashes when print_error() is called
from C library
static void vfprint_error(int type, const char *template, va_list ap)
{
char buffer[2000]; /* G_asprintf does not work */
vsprintf(buffer, template, ap);
G_debug(5, "print_error(): msg = \"%s\" type = %d", buffer, type);
print_error(buffer, type);
}
Any idea how to solve it. Thanks, Martin
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