add: return FALSE;
context: void enleve_selection_ligne_categ ( void ){  gtk_widget_set_sensitive ( bouton_supprimer_categ,			     FALSE );  gtk_widget_set_sensitive ( bouton_modif_categ_modifier,			     FALSE );  gtk_widget_set_sensitive ( bouton_modif_categ_annuler,			     FALSE );  gtk_widget_set_sensitive ( entree_nom_categ,			     FALSE );  gtk_widget_set_sensitive ( bouton_categ_debit,			     FALSE );  gtk_widget_set_sensitive ( bouton_categ_credit,			     FALSE );  gtk_widget_set_sensitive ( bouton_ajouter_sous_categorie,			     FALSE );  gtk_signal_handler_block_by_func ( GTK_OBJECT ( entree_nom_categ ),				     GTK_SIGNAL_FUNC ( modification_du_texte_categ),				     NULL );  gtk_editable_delete_text ( GTK_EDITABLE ( entree_nom_categ ),			     0,			     -1 );  gtk_signal_handler_unblock_by_func ( GTK_OBJECT ( entree_nom_categ ),				     GTK_SIGNAL_FUNC ( modification_du_texte_categ),				     NULL );}