[Swig-devel] Fwd: csharp and std string and wstring support

[chris n. <cnu...@gm...>]

Hello all.  I needed to get wide strings working correctly in csharp,
so yesterday a buddy of mine and I sat down and put things together.

I have attached a file that contains a test solution along with the
changes I made to std_string.i and a new file, std_wstring.i in the csharp lib.

This runs without any errors on a windows system.  I switched to
code-marshalling as opposed to attribute return value marshalling
(MarshalPtrToString[Ansi,Uni] as opposed to return:
MarshalAs(UnmanagedType.LP(W)Str) because I was getting RtlHeapFree
errors with the return value marshalling.

The test project has a full test class with std strings passing in and
out of functions in most combinations of const and reference.  This is
tested through the main function of the csharp class.

I could not get typemap(typecheck) to work for wstrings, and I removed
the ones for strings due to copying and pasting the wstring
implementation once I figured out why the RtlHeapFree errors were
happening.

Chris