+ rec_state_column->set_fixed_width(column_width);
+
+ // MIDI Input Active
+
+ CellRendererPixbufMulti* input_active_col_renderer = manage (new CellRendererPixbufMulti());
+ input_active_col_renderer->set_pixbuf (0, ::get_icon("midi-input-inactive"));
+ input_active_col_renderer->set_pixbuf (1, ::get_icon("midi-input-active"));
+ input_active_col_renderer->signal_changed().connect (sigc::mem_fun (*this, &EditorRoutes::on_input_active_changed));
+
+ TreeViewColumn* input_active_column = manage (new TreeViewColumn ("I", *input_active_col_renderer));
+
+ input_active_column->add_attribute(input_active_col_renderer->property_state(), _columns.is_input_active);
+ input_active_column->add_attribute (input_active_col_renderer->property_visible(), _columns.is_midi);
+
+ input_active_column->set_sizing(TREE_VIEW_COLUMN_FIXED);
+ input_active_column->set_alignment(ALIGN_CENTER);
+ input_active_column->set_expand(false);
+ input_active_column->set_fixed_width(column_width);