##############################################################
@example hello.c

The simplest possible program and spreadsheet. This is a good place to start
to see if the libxlsxwriter library is installed and working correctly.

@image html hello01.png

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@example anatomy.c

Anatomy of a simple libxlsxwriter program where the program is explained line
by line with comments.

@image html anatomy.png

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@example demo.c

A simple example of some of the features of the libxlsxwriter library.

@image html demo.png

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@example format_font.c

Example of writing some data with font formatting to a simple Excel
file using libxlsxwriter.

@image html format_font.png

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@example format_num_format.c

Example of writing some data with numeric formatting to a simple Excel
file using libxlsxwriter.

@image html format_set_num_format.png

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@example tutorial1.c

A tutorial program which is shown, with explanations, in @ref tutorial01.

@image html tutorial01.png

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@example tutorial2.c

A tutorial program which is shown, with explanations, in @ref tutorial02.

@image html tutorial02.png

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@example tutorial3.c

A tutorial program which is shown, with explanations, in @ref tutorial03.

@image html tutorial03.png

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@example dates_and_times01.c

Example of writing a dates and time in Excel using a number with date
formatting. This demonstrates that dates and times in Excel are just formatted
real numbers. An easier approach using a lxw_datetime struct is shown in the
next example.

@image html date_example01.png

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@example dates_and_times02.c

Example of writing dates and times in Excel using an lxw_datetime struct and
date formatting.

@image html date_example02.png

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@example dates_and_times03.c

Example of writing dates and times in Excel using Unix datetimes and
formatting.

@image html date_example03.png

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@example dates_and_times04.c

Example of writing dates and times in Excel using different date formats.

@image html date_example04.png

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@example hyperlinks.c

Example of writing urls/hyperlinks to a worksheet.

@image html hyperlinks.png

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@example rich_strings.c

Example of writing "rich" multi-format strings to a worksheet.

@image html rich_strings.png


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@example array_formula.c

Example of writing array formulas to a worksheet.

@image html array_formula.png

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@example dynamic_arrays.c

Example of writing Excel 365 dynamic array formulas to a worksheet.

@image html dynamic_arrays01.png

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@example utf8.c
A simple Unicode UTF-8 example. Note, the source file is UTF-8 encoded.

@image html utf8.png

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@example constant_memory.c

Example of using libxlsxwriter for writing large files in constant memory
mode.

@image html constant_memory.png

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@example output_buffer.c

Example of using libxlsxwriter to write a workbook file to a memory buffer.

@image html hello01.png

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@example image_buffer.c

Example of adding an image to a worksheet from a memory buffer.

@image html image_buffer2.png

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@example merge_range.c

Example of merging cells in a worksheet.

@image html merge_range.png

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@example merge_rich_string.c

Example of merging cells with a rich string in a worksheet.

@image html merge_rich.png

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@example autofilter.c

Example of adding autofilters to a worksheets and adding filter conditions.

@image html autofilter3.png

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@example data_validate.c

Example of adding data validations to a worksheet.

@image html data_validate4.png

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@example conditional_format1.c

A simple example of how to add a conditional format a
libxlsxwriter file. Conditional formatting allows you to apply
a format to a cell or a range of cells based on certain criteria.

@image html conditional_format12.png


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@example conditional_format2.c

A more comprehensive example of how to add conditional formatting
to an libxlsxwriter file. Conditional formatting allows you to
apply a format to a cell or a range of cells based on certain
criteria.

@image html conditional_format1.png

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@example tables.c

Example of how to add tables to a worksheet. Tables in Excel are used to group
rows and columns of data into a single structure that can be referenced in a
formula or formatted collectively.

@image html tables12.png

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@example images.c

Example of adding images to a worksheet.

@image html images.png

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@example headers_footers.c

Example of adding worksheet headers and footers to worksheets.

@image html headers_footers.png

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@example defined_name.c

Example of how to create defined names (named ranges) using libxlsxwriter.

Defined names are used to define descriptive names to represent a value, a
single cell or a range of cells in a workbook or worksheet.

@image html defined_name.png

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@example outline.c

Example of how to generate Excel outlines and grouping.

@image html outline1.png

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@example outline_collapsed.c

Example of how to generate Excel outlines and grouping. These examples focus
mainly on collapsed outlines.

@image html outline2.png

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@example watermark.c

Example of how to a watermark image for a worksheet using the method suggested
in the Microsoft documentation:
https://support.microsoft.com/en-us/office/add-a-watermark-in-excel-a372182a-d733-484e-825c-18ddf3edf009

@image html worksheet_watermark.png

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@example background.c

Example of how to set the background image for a worksheet.

@image html background.png

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@example tab_colors.c

Example of how to set Excel worksheet tab colors.

@image html tab_colors.png

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@example diagonal_border.c

Example of how to set a worksheet cell diagonal border.

@image html diagonal_border.png

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@example hide_sheet.c

Example of how to hide an Excel worksheet.

@image html hide_sheet.png

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@example doc_properties.c

Example of setting Excel document properties.

@image html doc_properties.png

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@example doc_custom_properties.c

Example of setting Excel custom document properties, i.e., properties
non-standard document properties.

@image html custom_properties.png

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@example worksheet_protection.c

Example of setting Excel worksheet protection.

@image html worksheet_protection.png

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@example macro.c

Example adding a VBA macro to a workbook.

@image html macros.png

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@example comments1.c

A simple example of adding cell comments to a worksheet.

@image html comments1.png

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@example comments2.c

Another example of adding cell comments to a worksheet. This example
demonstrates most of the available comment formatting options.

@image html comments2.png

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@example hide_row_col.c

Example of hiding rows and columns in an Excel worksheet.

@image html hide_row_col.png

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@example panes.c

An example of how to create panes in a worksheet, both "freeze" panes and
"split" panes.

@image html panes.png

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@example ignore_errors.c

Example of hiding worksheet errors and warnings.

@image html ignore_errors2.png

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@example lambda.c

Example of using the new Excel `LAMBDA()` function. It demonstrates how to
create a lambda function in Excel and also how to assign a name to it so that
it can be called as a user defined function. This particular example converts
from Fahrenheit to Celsius.

@image html lambda01.png

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@example chart.c

An example of creating a simple column chart with 3 data series.

@image html chart_simple.png

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@example chart_area.c

Example of creating Excel Area charts. Three types of area chart are shown.

The default area chart:
@image html chart_area1.png

Stacked area chart:
@image html chart_area2.png

Percent stacked area chart:
@image html chart_area3.png


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@example chart_bar.c

Example of creating Excel Bar charts. Three types of bar chart are shown.

The default bar chart:
@image html chart_bar1.png

Stacked bar chart:
@image html chart_bar2.png

Percent stacked bar chart:
@image html chart_bar3.png


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@example chart_column.c

Example of creating Excel Column charts. Three types of column chart are shown.

The default column chart:
@image html chart_column1.png

Stacked column chart:
@image html chart_column2.png

Percent stacked column chart:
@image html chart_column3.png


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@example chart_line.c

Example of creating Excel Line charts. Three types of line chart are shown.

The default line chart:
@image html chart_line1.png

Stacked line chart:
@image html chart_line2.png

Percent stacked line chart:
@image html chart_line3.png


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@example chart_scatter.c

Example of creating Excel Scatter charts. Five types of scatter chart are shown.

The default scatter chart:
@image html chart_scatter1.png

Straight scatter chart with markers:
@image html chart_scatter2.png

Straight scatter chart:
@image html chart_scatter3.png

Smooth scatter chart with markers:
@image html chart_scatter4.png

Smooth scatter chart:
@image html chart_scatter5.png


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@example chart_radar.c

Example of creating Excel Radar charts. Three types of radar chart are shown.

The default radar chart:
@image html chart_radar1.png

Radar chart with markers:
@image html chart_radar2.png

Filled radar chart:
@image html chart_radar3.png


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@example chart_pie.c

Examples of creating an Excel Pie chart.

The default pie chart:
@image html chart_pie1.png

A pie chart with user defined colors:
@image html chart_pie2.png

A pie chart with rotated segments:
@image html chart_pie3.png



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@example chart_doughnut.c

Example of creating an Excel Doughnut chart.

The default doughnut chart:
@image html chart_doughnut1.png

It is possible to define chart colors for most types of libxlsxwriter charts
via the series formatting functions. However, Pie/Doughnut charts are a
special case since each segment is represented as a point so it is necessary
to assign formatting to each point in the series.

Chart 4 shows how to set segment colors and other options.
@image html chart_doughnut2.png


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@example chart_clustered.c

Example of creating a clustered Excel chart where there are two levels of
category on the X axis.

The categories in clustered charts are 2D ranges, instead of the more normal
1D ranges. The series are shown as formula strings for clarity but you can
also use the a list syntax.

@image html chart_clustered.png


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@example chart_data_table.c

Example of creating charts with data tables.

Chart 1 in the following example is a column chart with default data table:
@image html chart_data_table1.png


Chart 2 is a column chart with default data table with legend keys:
@image html chart_data_table2.png


##############################################################
@example chart_data_tools.c

A demo of an various Excel chart data tools that are available via a
libxlsxwriter chart. These include Drop Lines and High-Low Lines.


Chart 1: chart with high-low lines.
@image html chart_data_tools5.png

Chart 2: chart with drop lines.
@image html chart_data_tools6.png

Chart 3: chart with up-down bars.
@image html chart_data_tools4.png

Chart 4: chart with formatted Up-down bars.
@image html chart_data_tools7.png

Chart 5: chart with markers and data labels.
@image html chart_data_tools8.png

Chart 6: chart with error bars.
@image html chart_data_tools3.png

Chart 7: chart with a trendline.
@image html chart_data_tools9.png


##############################################################
@example chart_data_labels.c

A demo of an various Excel chart data label features that are available via a
libxlsxwriter chart, including custom data labels.

Chart 1: chart with standard data labels.
@image html chart_data_labels11.png

Chart 2: chart with Category and Value data labels.
@image html chart_data_labels12.png

Chart 3: chart with data labels with a user defined font.
@image html chart_data_labels13.png

Chart 4: chart with data labels and formatting.
@image html chart_data_labels22.png

Chart 5: chart with custom string data labels.
@image html chart_data_labels14.png

Chart 6: chart with custom data labels referenced from worksheet cells.
@image html chart_data_labels15.png

Chart 7: chart with a mix of custom and default labels. The items initialized
with '{0}' and items without a custom label (points 5 and 6 which come after
NULL) will get the default value. We also set a font for the custom items as
an extra example.
@image html chart_data_labels16.png

Chart 8: chart with some deleted custom labels and defaults.
@image html chart_data_labels17.png

Chart 9: chart with custom string data labels and formatting.
@image html chart_data_labels23.png


##############################################################
@example chart_fonts.c

An example of creating a simple chart with different fonts.

@image html chart_fonts.png


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@example chart_pattern.c

An example of creating a simple chart with different patterns.

@image html chart_pattern.png


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@example chart_styles.c

An example showing all 48 default chart styles available in Excel 2007 using
the chart `chart_set_style()` method.

@image html chart_styles.png


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@example chartsheet.c

An example of creating a simple bar chart in a chartsheet.

@image html chartsheet.png
