GtkTreeModel *liststore =
gtk_tree_view_get_model (GTK_TREE_VIEW (fd->variables));
gtk_list_store_clear (GTK_LIST_STORE (liststore));
GtkTreeModel *liststore =
gtk_tree_view_get_model (GTK_TREE_VIEW (fd->variables));
gtk_list_store_clear (GTK_LIST_STORE (liststore));