ctypes different for 32 - 64 bits

[Helper]

On 12/11/2013 at 02:09, xxxxxxxx wrote:

User Information:
Cinema 4D Version:   R14 
Platform:   Windows  ;   
Language(s) :     C++  ;

---------
I use ctypes to call C++ with two strings (char * ).

Using 32 bits (+ debug) the string are received ok in C++
Using 64 bits (no debug) the string is rubbish in C++.

Python script (part)

    class S2H(Structure) :
        _fields_ = [("a",ctypes.c_char_p), ("b",ctypes.c_char_p)]
  
    MyLib.SetBlend.restype = int
    MyLib.SetBlend.argtypes = [S2H]
    inp = S2H("Mat.2", "456")
        
    res = MyLib.SetBlend(inp)

C++ (part)

DLLEXPORT int SetBlend(char* a, char* b) 
{ 

[Helper]

On 12/11/2013 at 02:16, xxxxxxxx wrote:

Solved.
Apparently, there is something wrong with my class definition.
Doing it straight solved the issue.

MyLib.SetBlend.argtypes = [ctypes.c_char_p, ctypes.c_char_p]