How to marshall a string in C?

How do I marshall (in ideally in SWIG) a C# string[] to a C++ string*?

• I am new in C# programming and trying to call wrap functions that is in C++. In C++ I have a function of the following prototype string* swap(string* ptr1, string*ptr2){ //swap the array of string return ptr2; } How do I wrap this function into C# (ideally using http://en.wikipedia.org/wiki/SWIG, but not necessary)?

• Answer:

  I had the same question for Java. For Java, I did not find anything pre-packaged and trivial to use. I had to define my own typemaps. In case you don't get any better answers for C#, you could start with the SWIG/C++ code described at http://stackoverflow.com/questions/3753495/swig-how-to-wrap-stdstring-stdstring-passed-by-reference . You would need to replace references to Java types, JNI methods (those that include a reference to "jenv"), and "JavaThrowException." These files from SWIG might also provide some relevant example code for C#: swig/Lib/csharp/std_string.i swig/Lib/csharp/typemaps.i