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/*
* An example of how to hide rows and columns using the libxlsxwriter
* library.
*
* In order to hide rows without setting each one, (of approximately 1 million
* rows), Excel uses an optimization to hide all rows that don't have data. In
* Libxlsxwriter we replicate that using the worksheet_set_default_row()
* function.
*
* Copyright 2014-2026, John McNamara, jmcnamara@cpan.org
*
*/
#include "xlsxwriter.h"
int main() {
/* Create a new workbook and add a worksheet. */
lxw_workbook *workbook = workbook_new("hide_row_col.xlsx");
lxw_worksheet *worksheet = workbook_add_worksheet(workbook, NULL);
lxw_row_t row;
/* Write some data. */
worksheet_write_string(worksheet, 0, 3, "Some hidden columns.", NULL);
worksheet_write_string(worksheet, 7, 0, "Some hidden rows.", NULL);
/* Hide all rows without data. */
worksheet_set_default_row(worksheet, 15, LXW_TRUE);
/* Set the height of empty rows that we want to display even if it is */
/* the default height. */
for (row = 1; row <= 6; row++)
worksheet_set_row(worksheet, row, 15, NULL);
/* Columns can be hidden explicitly. This doesn't increase the file size. */
lxw_row_col_options options = {.hidden = 1};
worksheet_set_column_opt(worksheet, COLS("G:XFD"), 8.43, NULL, &options);
workbook_close(workbook);
return 0;
}
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