- property_x1().signal_changed().connect(mem_fun(*this, &Lineset::bounds_need_update));
- property_y1().signal_changed().connect(mem_fun(*this, &Lineset::bounds_need_update));
- property_x2().signal_changed().connect(mem_fun(*this, &Lineset::bounds_need_update));
- property_y2().signal_changed().connect(mem_fun(*this, &Lineset::bounds_need_update));
+ property_x1().signal_changed().connect(sigc::mem_fun(*this, &LineSet::bounds_need_update));
+ property_y1().signal_changed().connect(sigc::mem_fun(*this, &LineSet::bounds_need_update));
+ property_x2().signal_changed().connect(sigc::mem_fun(*this, &LineSet::bounds_need_update));
+ property_y2().signal_changed().connect(sigc::mem_fun(*this, &LineSet::bounds_need_update));