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/*
* An example of a simple Excel chart with user defined fonts using the
* libxlsxwriter library.
*
* Copyright 2014-2026, John McNamara, jmcnamara@cpan.org
*
*/
#include "xlsxwriter.h"
/* Create a worksheet with a chart. */
int main() {
lxw_workbook *workbook = workbook_new("chart_fonts.xlsx");
lxw_worksheet *worksheet = workbook_add_worksheet(workbook, NULL);
/* Write some data for the chart. */
worksheet_write_number(worksheet, 0, 0, 10, NULL);
worksheet_write_number(worksheet, 1, 0, 40, NULL);
worksheet_write_number(worksheet, 2, 0, 50, NULL);
worksheet_write_number(worksheet, 3, 0, 20, NULL);
worksheet_write_number(worksheet, 4, 0, 10, NULL);
worksheet_write_number(worksheet, 5, 0, 50, NULL);
/* Create a chart object. */
lxw_chart *chart = workbook_add_chart(workbook, LXW_CHART_LINE);
/* Configure the chart. */
chart_add_series(chart, NULL, "Sheet1!$A$1:$A$6");
/* Create some fonts to use in the chart. */
lxw_chart_font font1 = {.name = "Calibri", .color = LXW_COLOR_BLUE};
lxw_chart_font font2 = {.name = "Courier", .color = 0x92D050};
lxw_chart_font font3 = {.name = "Arial", .color = 0x00B0F0};
lxw_chart_font font4 = {.name = "Century", .color = LXW_COLOR_RED};
lxw_chart_font font5 = {.rotation = -30};
lxw_chart_font font6 = {.bold = LXW_TRUE,
.italic = LXW_TRUE,
.underline = LXW_TRUE,
.color = 0x7030A0};
/* Write the chart title with a font. */
chart_title_set_name(chart, "Test Results");
chart_title_set_name_font(chart, &font1);
/* Write the Y axis with a font. */
chart_axis_set_name(chart->y_axis, "Units");
chart_axis_set_name_font(chart->y_axis, &font2);
chart_axis_set_num_font(chart->y_axis, &font3);
/* Write the X axis with a font. */
chart_axis_set_name(chart->x_axis, "Month");
chart_axis_set_name_font(chart->x_axis, &font4);
chart_axis_set_num_font(chart->x_axis, &font5);
/* Display the chart legend at the bottom of the chart. */
chart_legend_set_position(chart, LXW_CHART_LEGEND_BOTTOM);
chart_legend_set_font(chart, &font6);
/* Insert the chart into the worksheet. */
worksheet_insert_chart(worksheet, CELL("C1"), chart);
return workbook_close(workbook);
}
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