Hi,
I am sure you guys must have had this figured out already. I am running
into a bit of trouble trying to access struct data.
I have a simple C method that fills a struct array
typedef struct teststruct {
int a;
} test;
void testfunc(test **s)
{
s[0] = malloc(sizeof(test));
s[0]->a = 2;
printf("assigned %d\n", s[0]->a);
s[1] = malloc(sizeof(test));
s[1]->a = 3;
printf("assigned %d\n", s[1]->a);
}
And I try to use this method from nodejs-ffi
var ref = require('ref');
var ffi = require('ffi');
var Struct = require('ref-struct');
var teststruct = Struct({
'a': 'int'
});
var testlib = ffi.Library("/Users/vik/work/ffi-node/test.so", {
'testfunc': ['void', [ref.refType(ref.refType(teststruct))] ]
});
var ptr = ref.alloc(ref.refType(teststruct));
testlib.testfunc(ptr);
console.log(ptr.deref().deref().a); // prints 2 as expected, 0th index in
the struct array
Now how do I print 3 which is the 1st index in the struct array?
Much appreciated all your help.
Thanks,
Vik.
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