Swig/Python: data type problem

[Carole Valentin]

Hello, 

I have 2 modules: Module 1 written in C++ (Visual C++ 5.0) and Module
2 in Python (Python 2.1).
I use Swig to make accessible the data from the Module 1 to the Module
2.
In the Module 1, I have a function which read a file: 

void read(String* namefile); 

In the Module 2, I build a window (with wxPython) with a popup list
which contains the names of the different files. When I choose a file
name:

# import the Module 1 project: 
from Module1 import * 
# create a new object:  
object = MyObject() 
# read the database file with the 
# parameter "namefile" = the name choosen just before: 
object.read(namefile) 

In Python, we don't declare the data so "namefile" doesn't have any
data type.
But in C++, we expect a data type: 

void MyObject::read(String* namefile) 

I tryed with 3 data types: char / string / string* 
Each time, I have the same error: 

File "c:\python21\Module1.py", line 172, in read 
    val = apply(Interfc.RoadNetwork_lecture,args) 
TypeError: Type error. Expected _p_String 

Do you have any suggestion? 
Thanks a lot, 
Carole.