ms-help://MS.VSCC.v90/MS.MSDNQTR.v90.chs/dv_vccore/html/385da01b-5649-4543-8076-e3e251243ff0.htm
// convert_string_to_wchar.cpp
// compile with: /clr
#include < stdio.h >
#include < stdlib.h >
#include < vcclr.h >
using namespace System;
int main() {
String ^str = "Hello";
// Pin memory so GC can't move it while native function is called
pin_ptr<
const wchar_t> wch = PtrToStringChars(str);
printf_s("%S\n", wch);
// Conversion to char* :
// Can just convert wchar_t* to char* using one of the
// conversion functions such as:
// WideCharToMultiByte()
// wcstombs_s()
// 
etc
size_t convertedChars = 0;
size_t sizeInBytes = ((str->Length + 1) * 2);
errno_t err = 0;
char *ch = (
char *)malloc(sizeInBytes);
err = wcstombs_s(&convertedChars,
ch, sizeInBytes,
wch, sizeInBytes);
if (err != 0)
printf_s("wcstombs_s failed!\n");
printf_s("%s\n", ch);
}