How do I make a case insensitive compare between two Unicode characters or strings under Windows in C/C++?

Question

I'm looking for a way of doing a insensitive compare of two Unicode characters (char32) under Windows (C/C++, not .NET).

I am aware that the solution is supposed to be locale aware.

I would like a solution that would not require additional third-party libraries.

Answer 1

My first thought is that you should lookup CompareStringEx with its parameters LOCALE_INVARIANT and NORM_IGNORECASE.