How to return a pointer to a structure in ctypes?

Question

I try to pass a pointer of a structure which is given me as a return value from the function 'bar' to the function 'foo_write'. But I get the error message 'TypeError: must be a ctypes type' for line 'foo = POINTER(temp_foo)'. In the ctypes online help I found that 'ctypes.POINTER' only works with ctypes types. Do you know of another way? What would you recommend?

C:

typedef struct FOO_{
    int i;
    float *b1;
    float (*w1)[];
}FOO;

foo *bar(int foo_parameter) {...
void foo_write(FOO *foo)

Python with ctypes:

class foo(Structure):
    _fields_=[("i",c_int),
              ("b1",POINTER(c_int)),
              ("w1",POINTER(c_float))]

temp_foo=foo(0,None,None)
foo = POINTER(temp_foo)
foo=myclib.bar(foo_parameter)
myclib.foo_write(foo)

Answer 1

Change

foo = POINTER(temp_foo)

to

foo = pointer(temp_foo)

can solve the problem.

Please see http://docs.python.org/library/ctypes.html#ctypes-pointers for more information.