问直接从C API填充std::string

EN

//getSomeString() wraps C api that gets some C string from somewhere
std::string MyClass::getSomeString()
{
    char buffer[BUFFER_MAX];
    memset(buffer, '\0', BUFFER_MAX);
    auto result = GetCApiString(buffer, BUFFER_MAX); //C style string getter 
    return (result == NO_ERROR) ? std::string{buffer} : ""; //Copy here
}

//getSomeString(): as before
std::string MyClass::getSomeString()
{
    DirectStringFillIterator<char> returnString; // <--HERE. Is something like this possible?
    auto result = GetCApiString(returnString, BUFFER_MAX);
    return (result == NO_ERROR) ? returnString.str() : ""; 
}