gtk_sheet_column_size_request (sheet, column, &min_width);
if (width < min_width) return;
gtk_sheet_column_size_request (sheet, column, &min_width);
if (width < min_width) return;
gtk_sheet_row_size_request (sheet, row, &min_height);
if (height < min_height) return;
gtk_sheet_row_size_request (sheet, row, &min_height);
if (height < min_height) return;