tree_model_column_type (GtkTreeModel * model, gint index)
{
g_return_val_if_fail (PSPPIRE_IS_SPREADSHEET_MODEL (model), (GType) 0);
tree_model_column_type (GtkTreeModel * model, gint index)
{
g_return_val_if_fail (PSPPIRE_IS_SPREADSHEET_MODEL (model), (GType) 0);