rem: gint cherche_ligne_operation ( struct structure_operation *operation,
add: gint cherche_ligne_operation ( struct structure_operation *transaction,
context: gint cherche_ligne_operation ( struct structure_operation *operation,			       gint no_account ){    GtkTreeIter *iter;    iter = cherche_iter_operation ( operation,				    no_account );    return ( my_atoi ( gtk_tree_model_get_string_from_iter (  GTK_TREE_MODEL ( gsb_account_get_store ( no_account )),							      iter )));}