title: How to import const char* API to C#?
body: <p>Given this C API declaration how would it be imported to C#?</p>
  
  <pre><code>const char* _stdcall z4LLkGetKeySTD(void);
  </code></pre>
  
  <p>I've been able to get this far:</p>
  
  <pre><code>   [DllImport("zip4_w32.dll",
         CallingConvention = CallingConvention.StdCall,
         EntryPoint = "z4LLkGetKeySTD",
         ExactSpelling = false)]
     private extern static const char* z4LLkGetKeySTD();
  </code></pre>