/usr/share/puredata/doc/6.externs/obj5.c is in puredata-doc 0.48.1-3.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 | /* code for the "obj5" pd class. This shows "gimme" arguments, which have
variable arguments parsed by the routines (both "new" and "rats".) */
#include "m_pd.h"
typedef struct obj5
{
t_object x_ob;
} t_obj5;
/* the "rats" method is called with the selector (just "rats" again)
and an array of the typed arguments, which are each either a number
or a symbol. We just print them out. */
void obj5_rats(t_obj5 *x, t_symbol *selector, int argcount, t_atom *argvec)
{
int i;
post("rats: selector %s", selector->s_name);
for (i = 0; i < argcount; i++)
{
if (argvec[i].a_type == A_FLOAT)
post("float: %f", argvec[i].a_w.w_float);
else if (argvec[i].a_type == A_SYMBOL)
post("symbol: %s", argvec[i].a_w.w_symbol->s_name);
}
}
t_class *obj5_class;
/* same for the "new" (creation) routine, except that we don't have
"x" as an argument since we have to create "x" in this routine. */
void *obj5_new(t_symbol *selector, int argcount, t_atom *argvec)
{
t_obj5 *x = (t_obj5 *)pd_new(obj5_class);
int i;
post("new: selector %s", selector->s_name);
for (i = 0; i < argcount; i++)
{
if (argvec[i].a_type == A_FLOAT)
post("float: %f", argvec[i].a_w.w_float);
else if (argvec[i].a_type == A_SYMBOL)
post("symbol: %s", argvec[i].a_w.w_symbol->s_name);
}
return (void *)x;
}
void obj5_setup(void)
{
/* We specify "A_GIMME" as creation argument for both the creation
routine and the method (callback) for the "rats" message. */
obj5_class = class_new(gensym("obj5"), (t_newmethod)obj5_new,
0, sizeof(t_obj5), 0, A_GIMME, 0);
class_addmethod(obj5_class, (t_method)obj5_rats, gensym("rats"), A_GIMME, 0);
}
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