gtk_tree_view_column_set_min_width (col, 100);
gtk_tree_view_column_set_sizing (col, GTK_TREE_VIEW_COLUMN_FIXED);
gtk_tree_view_column_set_resizable (col, TRUE);
gtk_tree_view_column_set_title (col, label);
gtk_tree_view_column_set_min_width (col, 100);
gtk_tree_view_column_set_sizing (col, GTK_TREE_VIEW_COLUMN_FIXED);
gtk_tree_view_column_set_resizable (col, TRUE);
gtk_tree_view_column_set_title (col, label);