关于ANSI和Unicode、Unicode和UTF-8等的相互转换

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关于ANSI和Unicode、Unicode和UTF-8等的相互转换可通用的代码如下：

qp::StringW Global::AnsiToUnicode(const char* buf)

{

int len = ::MultiByteToWideChar(CP_ACP, 0, buf, -1, NULL, 0);

if (len == 0) return L"";

std::vector<</CODE>wchar_t> unicode(len);

::MultiByteToWideChar(CP_ACP, 0, buf, -1, &unicode[0], len);

return &unicode[0];

}

qp::StringA Global::UnicodeToAnsi(const wchar_t* buf)

{

int len = ::WideCharToMultiByte(CP_ACP, 0, buf, -1, NULL, 0, NULL, NULL);

if (len == 0) return "";

std::vector<</CODE>char> utf8(len);

::WideCharToMultiByte(CP_ACP, 0, buf, -1, &utf8[0], len, NULL, NULL);

return &utf8[0];

}

qp::StringW Global::Utf8ToUnicode(const char* buf)

{

int len = ::MultiByteToWideChar(CP_UTF8, 0, buf, -1, NULL, 0);

if (len == 0) return L"";

std::vector<</CODE>wchar_t> unicode(len);

::MultiByteToWideChar(CP_UTF8, 0, buf, -1, &unicode[0], len);

return &unicode[0];

}

qp::StringA Global::UnicodeToUtf8(const wchar_t* buf)

{

int len = ::WideCharToMultiByte(CP_UTF8, 0, buf, -1, NULL, 0, NULL, NULL);

if (len == 0) return "";

std::vector<</CODE>char> utf8(len);

::WideCharToMultiByte(CP_UTF8, 0, buf, -1, &utf8[0], len, NULL, NULL);

return &utf8[0];

}