Unmanaged DLL: C# variable for C++ char**

Hello.

I'm making an application that works with buffers. I have to call some C++ functions with data pointers as arguments. I'm trying to not use unsafe code.
One of the functions have two parameters of type char*. I've defined on C# two buffers:

byte[] Buffer1 = new byte[SIZE];
byte[] Buffer1 = new byte[SIZE];

On the dllimport I use marshaling:
....
[MarshalAs(UnmanagedType.LPArray)] byte[] buffer1,
[MarshalAs(UnmanagedType.LPArray)] byte[] buffer2,
....

These two buffers are filled by the C++ function.
Two retrieve the data of the buffers, I use another C++ function. This function returns in a parameter the last buffer filled:

void FillBuff(char **Pbuff);

Pbuff is a pointer to one of the byte[] buffers defined above.
The problem is that I don't know how to define a C# to assign the pointer returned by the C++ function and accessing to the buffer's content. I've tried several thigs with no success, some of them dying at compilation time, others at execution time.

Any suggestion?

Thanks in advance
xmasdeuAsked:
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