gtkmm: New API in gtkmm 2.8

gtkmm 4.13.1

New API in gtkmm 2.8

Member Gtk::IconView::get_cursor (TreeModel::Path & path, CellRenderer *& cell) const
Member Gtk::IconView::get_cursor (TreeModel::Path & path) const
Member Gtk::IconView::get_cursor (CellRenderer *& cell) const
Member Gtk::TreeView::get_path_at_pos (int x, int y, TreeModel::Path & path, TreeViewColumn *& column, int & cell_x, int & cell_y) const
Member Gtk::TreeView::unset_model ()