// read ogre configuration file and extract window dimensions
    int width, height;
    cf.load("ogre.cfg");
    seci = cf.getSectionIterator();
    while(seci.hasMoreElements())
    {
        secName = seci.peekNextKey();
        Ogre::ConfigFile::SettingsMultiMap* settings = seci.getNext();
        Ogre::ConfigFile::SettingsMultiMap::iterator it;
        for(it = settings->begin(); it != settings->end(); ++it)
        {
            typeName = it->first;
            archName = it->second;
            if(typeName == "Video Mode")
            {
                std::size_t split = archName.find("x");
                if(split == Ogre::String::npos)
                    throw std::runtime_error("Failed to parse video mode from ogre.cfg");
                width = std::stoi(archName.substr(0, split));
                height = std::stoi(archName.substr(split+1));
            }
        }
    }