python调用DLL问题（急）

newrain

test.DLL中封装了几个函数
int A()
int B(int Handle, ref long Len_s1, ref long Len_s2)

python中调用
from ctypes import *

test = CDLL("test")

A = test.A
A.restype = c_int

B = test.B
B.restype = c_int
B.argtypes = [c_int, c_void_p, c_void_p]

#然后通过引用来调用
va1 = 0
va2 = 0
s2 = B( A(), byref(va1), bref(va2) )

newrain

#! /usr/env/python
from ctypes import *
test = CDLL("testdll"
A = test.A
A.restype = c_int
B = test.B
B.restype = c_int
B.argtypes = [c_int, c_void_p, c_void_p]
va1 = c_int()
va2 = c_int()

s2 = B(A(), byref(va1), byref(va2) )
print s2, va1, va2


// 测试dll的头文件
#ifndef  TEST_DLL_H
#define  TEST_DLL_H
#define DLLPORT __declspec(dllexport)
extern "C" DLLPORT int A();
extern "C" DLLPORT int B(int handle, int *s1, int* s2);
#endif

// 测试dll的实现文件
#include "testdll.h"
int A()
{
return 1;
}
int B(int handle, int *s1, int* s2)
{
*s1 = 76;
*s2 = 88;
return handle;
}

BOOL APIENTRY DllMain( HANDLE hModule,
                       DWORD  ul_reason_for_call,
                       LPVOID lpReserved
      )
{
    return TRUE;
}


# 输出结果：
1 c_long(76) c_long(8

因此，你应该仔细查看你的dll返回值是否正确，而不是去判断python的代码是否有问题！