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/*
* Example of using libxlsxwriter to write a workbook file to a memory buffer.
*
* Copyright 2014-2025, John McNamara, jmcnamara@cpan.org
*
*/
#include <stdio.h>
#include "xlsxwriter.h"
int main() {
const char *output_buffer;
size_t output_buffer_size;
/* Set the worksheet options. */
lxw_workbook_options options = {.output_buffer = &output_buffer,
.output_buffer_size = &output_buffer_size,
.constant_memory = LXW_FALSE,
.tmpdir = NULL,
.use_zip64 = LXW_FALSE};
/* Create a new workbook with options. */
lxw_workbook *workbook = workbook_new_opt(NULL, &options);
lxw_worksheet *worksheet = workbook_add_worksheet(workbook, NULL);
worksheet_write_string(worksheet, 0, 0, "Hello", NULL);
worksheet_write_number(worksheet, 1, 0, 123, NULL);
lxw_error error = workbook_close(workbook);
if (error)
return error;
/* Do something with the XLSX data in the output buffer. */
FILE *file = fopen("output_buffer.xlsx", "wb");
fwrite(output_buffer, output_buffer_size, 1, file);
fclose(file);
free((void *)output_buffer);
return ferror(stdout);
}
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