rem: selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (treeview));
add: selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (payment_method_treeview));
context: void modification_entree_type_dernier_no ( void ){    struct struct_type_ope *type_ope;    GtkTreeSelection *selection;    GtkTreeIter iter;    gboolean good, visible;    selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (treeview));    good = gtk_tree_selection_get_selected (selection, NULL, &iter);    gtk_tree_model_get ( GTK_TREE_MODEL(model), &iter, 			 PAYMENT_METHODS_VISIBLE_COLUMN, &visible,			 PAYMENT_METHODS_POINTER_COLUMN, &type_ope,			 -1 );    if (good && visible)    {	gtk_tree_store_set (GTK_TREE_STORE (model), &iter, 			    PAYMENT_METHODS_NUMBERING_COLUMN, 			    automatic_numbering_get_new_number ( type_ope ) - 1,			    -1);    }}