Rich Text Custom Data Label of Chart Point with C++

You can use Aspose.Cells to create rich text custom data label of the chart point. Aspose.Cells provides the DataLabels.Characters() method to return the FontSetting object which can be used to set the font properties of the text like its color, boldness, etc.

Rich Text Custom Data Label of Chart Point

The following code accesses the first chart point of the first series, sets its text and then sets the font of the first 10 characters by setting its color to red and boldness to true.

#include <iostream>
#include "Aspose.Cells.h"
using namespace Aspose::Cells;

int main()
{
    Aspose::Cells::Startup();

    // For complete examples and data files, please go to https://github.com/aspose-cells/Aspose.Cells-for-C
    // Source directory path
    U16String srcDir(u"..\\Data\\01_SourceDirectory\\");

    // Create a workbook from source Excel file
    Workbook workbook(srcDir + u"sample.xlsx");

    // Access first worksheet
    Worksheet worksheet = workbook.GetWorksheets().Get(0);

    // Access the first chart inside the sheet
    Chart chart = worksheet.GetCharts().Get(0);

    // Access the data label of first series first point
    DataLabels dlbls = chart.GetNSeries().Get(0).GetPoints().Get(0).GetDataLabels();

    // Set data label text
    dlbls.SetText(u"Rich Text Label");

    // Set the font setting of the first 10 characters
    FontSetting fntSetting = dlbls.Characters(0, 10);
    fntSetting.GetFont().SetColor(Color::Red());
    fntSetting.GetFont().SetIsBold(true);

    // Save the workbook
    workbook.Save(srcDir + u"output_out.xlsx");

    Aspose::Cells::Cleanup();
}