Marshaling a C++ two-dimensional fixed length char array as a structure member

Question

I am trying to call an unmanaged C++ function, that has a structure as an input parameter. The structure is defined in the header file like this:

struct MySt         


        

Answer 1

char aaszNames[6][25];

char of C++ Type is 8 bits~

but char of C# Type is Unicode ,(16 bits) !

so char of C++ Type <-> byte of C# type