add_host = new QPushButton(tr("&Add Host"), this);
edit_host = new QPushButton(tr("&Edit Host"), this);
del_host = new QPushButton(tr("&Delete Host"), this);
add_host = new QPushButton(tr("&Add Host"), this);
edit_host = new QPushButton(tr("&Edit Host"), this);
del_host = new QPushButton(tr("&Delete Host"), this);