add: selection = gtk_tree_view_get_selection ( g_object_get_data ( editable, "view" ) );
context: gboolean changement_iso_code_entree_devise ( GtkEditable *editable, gchar * text,					     gint length, gpointer data ){    struct struct_devise *devise;    GtkTreeStore * tree_model;    GtkTreeSelection * selection;    GtkTreeIter iter;    devise = currency_get_selected ( g_object_get_data ( editable, "view" ) );    if ( !selection || ! gtk_tree_selection_get_selected (selection, &tree_model, &iter))	return(FALSE);    devise -> code_iso4217_devise = g_strdup ( g_strstrip ( (gchar *) gtk_entry_get_text ( GTK_ENTRY ( entree_iso_code_devise_parametres ))));    gtk_tree_store_set ( GTK_TREE_STORE ( tree_model ), &iter,			 CURRENCY_ISO_CODE_COLUMN, devise -> code_iso4217_devise,			 -1);    return FALSE;}