std::vector<gd::String> GetHiddenLayers(const Layout & layout) { std::vector<gd::String> hiddenLayers; for (std::size_t i = 0;i < layout.GetLayersCount();++i) { if (!layout.GetLayer(i).GetVisibility()) { hiddenLayers.push_back(layout.GetLayer(i).GetName()); } } return hiddenLayers; }