dll - ctypes returns wrong type in Python -


i trying call method dll file using python 2.7

my code below:

import ctypes mydll = ctypes.cdll("k:\\development\\dll_test\\xx.dll")  mydll.mymethod.argtypes=[ctypes.c_char_p] mydll.mymethod.restype=ctypes.c_char_p appid=ctypes.c_char_p('xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx')  challenge= mydll.mymethod(appid)

in dll file, mymethod returns *char returns empty string in python.

what can problem?

thanks support.


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