C++ API 动态生成dll,python3 调用报错access violation reading 0x00000001

c++ api定义：

SAAA_API SAAAErr  __stdcall  VED_Init(SAAA_VIDEO_TYPE &Type,char *registerName, char* registerId);

typedef enum SAAA_VIDEO_TYPE 
{
    VIDEO_TYPE_A = 1,
    VIDEO_TYPE_B = 2,
    VIDEO_TYPE_C = 3        
};

python3 ：

dll=windll.LoadLibrary('ve.dll')

str2=c_char_p(bytes("1",'utf-8'))
str2 = c_char_p(bytes("3333",'utf-8'))
str3 = c_char_p("4444".encode())
dll.VED_Init(str1,str2,str3)

`

char registerName, char registerId
写错了吧
应该是
char *registerName, char *registerId
否则是单个字符