Warning
gtk_table_set_row_spacing has been deprecated since version 3.4 and should not be used in newly-written code. Use gtk_widget_set_margin_top() and
gtk_widget_set_margin_bottom() on the widgets contained in the row if
you need this functionality. GtkGrid does not support per-row spacing.
Changes the space between a given table row and the subsequent row.
Warning gtk_table_set_row_spacing has been deprecated since version 3.4 and should not be used in newly-written code. Use gtk_widget_set_margin_top() and gtk_widget_set_margin_bottom() on the widgets contained in the row if you need this functionality. GtkGrid does not support per-row spacing. Changes the space between a given table row and the subsequent row.