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typedef struct
{
long r_id;
long data[10];

} Data;

Data*getdata(){

Data* r = (Data*)malloc(sizeof(Data));

r->r_id = 123；

int a[10] = {1,2,3,4,5}

memcpy(r->data,a, sizeof(long) * 10);
return r;
}

python ÓïÑÔ

import ctypes
dll = ctypes.cdll.LoadLibrary("cit_data.dll")
class StructPointer(ctypes.Structure):
_fields_ = [("r_id", ctypes.c_long),
("data", ctypes.c_long) ]

dll.getdata.restype = ctypes.POINTER(StructPointer)

p = dll.getdata()

print（p.contents.r_id）

print（p.contents.data）