update

cpp2c.h

@@ -2,6 +2,7 @@
 #define _UTILS_CPP2C_H
 
 #include <string>
+#include <wchar.h>
 
 namespace cpp2c {
     /**
@@ -11,6 +12,13 @@ namespace cpp2c {
      * @return true if succeeded.
     */
     bool string2char(std::string inp, char*& out);
+    /**
+     * @brief Convert wstring to wchar_t*
+     * @param inp Input string
+     * @param out The pointer to output buffer. Need free memory by using free.
+     * @return true if succeeded.
+    */
+    bool string2char(std::wstring inp, wchar_t*& out);
 }
 
 #endif