Reads a file into a vector of unsigned char

ReadAllBytes.cpp

typedef unsigned char BYTE;
std::vector<BYTE> ReadAllBytes(const std::string& filename)
{
    using namespace std;
    ifstream file(filename.c_str(), ios::binary | ios::ate);
    file >> noskipws;

    streampos fileSize = file.tellg();
    file.seekg(0, ios::beg);

    vector<BYTE> bytes;
    bytes.reserve(fileSize);

    copy(istream_iterator<BYTE>(file),
         istream_iterator<BYTE>(),
         back_inserter(bytes));

    return bytes;
}

auto bytes = ReadAllBytes("c:/windows/fonts/arialbd.ttf");
unsigned char* data = bytes.data(); // needs one level of indirection to work properly