[Tutor] python ctypes dll issue

mammar mammar at gmail.com
Sun May 8 21:49:27 CEST 2011


Hi All,


I have created a DLL with the following function exported in it

int myFunction(char *id, char *name);


Below is the python code to load the dll and call myFunction


from ctypes import *

# Load DLL into memory
mydll= windll.LoadLibrary("my.dll")

id = create_string_buffer("030725002")
name = create_string_buffer("mammar")

print mydll.myFunction(id, name)



But when i run the above code i am getting error dialog box with following
info

Debug Assertion Failed!

Program: C:\Python27\pythonw.exe
file: fread.c
line: 93

Expression: (buffer != NULL)


Whats the problem? Any idea?


Regards.
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