append BYTE[] to CString

[Vachaun22]

I'm having a problem appending a BYTE array to a CString.

BYTE b[17];
    .
    .
    .

CString& string;
    .
    .
    .
string += b;  // Error line

error C2679: binary '+=' : no operator found which takes a right-hand operand of type 'BYTE [17]' (or there is no acceptable conversion)


This is the error I am getting. It's been over 8 years since I last programmed in C++, and I can't seem to find what I need on google.

Also, this is attempting to be compiled with Unicode support.

 

[cpjust]

BYTE = unsigned char
What exactly does the BYTE array look like? Is it just ASCII text "abcd" or Unicode text where it would look something like "a\0b\0c\0d\0"?

 

[Vachaun22]

The values in the BYTE array represent hex characters for a file read in binary form.

if pFile is a CFile* and m_pFileData is BYTE[ /*length of document*/] then

pFile->Read (m_pFileData, /*length of document*/);

the BYTE array is filled in such a way that BYTE b[] filled by calling

UINT nCount = pDoc->GetBytes (nLine * 16, 16, b);


UINT <Class>::GetBytes (UINT nIndex, UINT nCount, PVOID pBuffer)
{
    if (nIndex >= m_nDocLength) // m_nDocLength = DocLength
        return 0;

    UINT nLength = nCount;
    if ((nIndex + nCount) > m_nDocLength)
        nLength = m_nDocLength - nIndex;

    ::CopyMemory (pBuffer, m_pFileData + nIndex, nLength);
    return nLength;
}

 

[cpjust]

If the BYTE array contains binary data instead of text, a string container like CString probably isn't the best container to use. I'd use a std::vector<BYTE> (or something like CArray<BYTE> if you really want to use MFC).