How to convert ANSI byte to Unicode string?

Question

I have an vector<BYTE> that represents characters in a string. I want to interpret those characters as ASCII characters and store them in a Unicode (UTF-16) string. The current code assumes that the characters in the vector<BYTE> are Unicode rather than ASCII. This works fine for standard ASCII, but fails for extended ASCII characters. These characters need to be interpreted using the current code page retrieved via GetACP(). How would I go about creating a Unicode (UTF-16) string with these ASCII characters?

EDIT: I believe the solution should have something to do with the macros discussed here: http://msdn.microsoft.com/en-us/library/87zae4a3(v=vs.80).aspx I'm just not exactly sure how the actual implementation would go.

int ExtractByteArray(CATLString* pszResult, const CByteVector* pabData)
{
    // place the data into the output cstring
    pszResult->Empty();
    for(int iIndex = 0; iIndex < pabData->GetSize(); iIndex++)
        *pszResult += (TCHAR)pabData->GetAt(iIndex);

    return RC_SUCCESS;
}

Answer 1

You should use MultibyteToWideChar to convert that string to unicode