// convert_from_basic_string.cpp

// compile with /clr /link comsuppw.lib



#include <iostream>

#include <stdlib.h>

#include <string>



#include "atlbase.h"

#include "atlstr.h"

#include "comutil.h"



using namespace std;

using namespace System;



int main()

{

    string orig("Hello, World!");

    cout << orig << " (basic_string)" << endl;



    // Convert to a char*

    const size_t newsize = 100;

    char nstring[newsize];

    strcpy_s(nstring, orig.c_str());

    strcat_s(nstring, " (char *)");

    cout << nstring << endl;



    // Convert to a wchar_t*

    // You must first convert to a char * for this to work.

    size_t origsize = strlen(orig.c_str())   1;

    size_t convertedChars = 0;

    wchar_t wcstring[newsize];

    mbstowcs_s(&convertedChars, wcstring, origsize, orig.c_str(), _TRUNCATE);

    wcscat_s(wcstring, L" (wchar_t *)");

    wcout << wcstring << endl;



    // Convert to a _bstr_t

    _bstr_t bstrt(orig.c_str());

    bstrt  = " (_bstr_t)";

    cout << bstrt << endl;



    // Convert to a CComBSTR

    CComBSTR ccombstr(orig.c_str());

    if (ccombstr.Append(L" (CComBSTR)") == S_OK)

    {

        CW2A printstr(ccombstr);

        cout << printstr << endl;

    }



    // Convert to a CString

    CString cstring(orig.c_str());

    cstring  = " (CString)";

    cout << cstring << endl;



    // Convert to a System::String

    String ^systemstring = gcnew String(orig.c_str());

    systemstring  = " (System::String)";

    Console::WriteLine("{0}", systemstring);

    delete systemstring;

}


 

 
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