我有一个连接到一些 C 代码的 native python 桥，它返回一个指向数组(结构数组)的指针。该结构体包含一些字符数组(字符串)。但是如何从 c_char_p_Array_NNN 获取实际的 Python 字符串呢？
typedef struct td_Group
{
unsigned int group_id;
char groupname[256];
char date_created[32];
char date_modified[32];
unsigned int user_modified;
unsigned int user_created;
} Group;
int getGroups(LIBmanager *, Group **);
############# python code below:
class Group(Structure):
_fields_ = [("group_id", c_uint),
("groupname", c_char_p*256),
("date_created", c_char_p*32),
("date_modified", c_char_p*32),
("user_modified", c_uint),
("user_created", c_uint)]
def somefunc():
myGroups = c_void_p()
count = libnativetest.getGroups( nativePointer, byref(myGroups) )
print "got " + str(count) + " groups!!"
myCastedGroups = cast( myGroups, POINTER(Group*count) )
for x in range(0,count):
theGroup = cast( myCastedGroups[x], POINTER(Group) )
theGroupName = theGroup.contents.groupname
### Now how do I access theGroupName as a python string?
# it is a c_char_p_Array_256 presently
最佳答案
类型应为 c_char*256 ，不是c_char_p*256 ，因为它是 char[256] ，不是char *[256] .
<a href="http://docs.python.org/library/ctypes.html#ctypes.string_at" rel="noreferrer noopener nofollow">string_at</a>(theGroupName, sizeof(theGroupName))
关于python - 使用 ctypes 在 Python 中访问 c_char_p_Array_256，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/8314275/