Managed 문자열 -> Unmanaged 문자열 변환

//-- 인코딩 지정 변환 예

System::Text::Encoding^ m_encoding;

m_encoding = gcnew System::Text::UTF8Encoding();

m_stat, sql::SQLException* : legacy native c++ pointer

int execute(String^ sql) 

{ 

try {

assert(m_stat); 

if (!m_encoding) {

return m_stat->execute(getAnsiString(sql)); //.net -> native

} else {

array<unsigned char>^ bytes = m_encoding->GetBytes(sql);

pin_ptr<unsigned char> s = &bytes[0];

return m_stat->execute((const char*)s);   //.net -> native

}

} catch (sql::SQLException *ex) {

throw gcnew SQLException(ex, sql);

}

}

//-- utf8 로 저장된 문자열 배열을, .net 유니코드 문자열 배열로 변환

array<String^>^ convStrArray(const std::vector<std::string> &arrStr) //native -> .net

{

size_t cnt = arrStr.size();

UTF8Encoding^ encode = gcnew UTF8Encoding(true,true);

        array<String^>^ arr = gcnew array<String^>(cnt);

        for (size_t i = 0; i < cnt; i++)

            arr[i] = gcnew String(arrStr[i].c_str(), 0, arrStr[i].size(), encode);

        return arr;

}

//-- strconv.h, vs2005/8

#pragma once

#include <vcclr.h>

#include <string>

using namespace System;

using namespace System::Runtime::InteropServices;

inline

std::string getAnsiString(String^ s) 

{

    IntPtr ip = Marshal::StringToHGlobalAnsi(s);

    const char* str = static_cast<const char*>(ip.ToPointer());

    std::string ansi(str);

    

    Marshal::FreeHGlobal( ip );

    return ansi;

}

inline

std::wstring getUniString(String^ s)

{

    pin_ptr<const wchar_t> str = PtrToStringChars(s);

    std::wstring uni(str);

    return uni;

}


출처 : http://blog.naver.com/harkon?Redirect=Log&logNo=120064127670