Render Unicode Supplementary characters in output PDF with C++ by Aspose.Cells

Normal Unicode characters are 2 bytes long while Unicode Supplementary characters are 4 bytes long. Aspose.Cells now supports rendering of these 4‑byte Unicode characters.

In the Unicode Character Standard, Supplementary Characters are the characters assigned code points from U+10000 to U+10FFFF. In other words, these are the Unicode characters greater than U+FFFF.

• In UTF-8 these characters are each 4 bytes long.
• In UTF-16 these characters require 2 surrogates (16-bit units).

Render Unicode Supplementary characters in output PDF with Aspose.Cells

The following screenshot shows how Aspose.Cells rendered the source excel file into the output PDF. As you can see, all three Unicode Supplementary characters have been rendered exactly the same as in Microsoft Excel.

Sample Code

You can use this sample code to convert the source excel file into the output PDF.

#include <iostream>
#include "Aspose.Cells.h"

using namespace Aspose::Cells;

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

    // Source directory path
    U16String srcDir(u"..\\Data\\01_SourceDirectory\\");

    // Output directory path
    U16String outDir(u"..\\Data\\02_OutputDirectory\\");

    // Path of input excel file
    U16String inputFilePath = srcDir + u"unicode-supplementary-characters.xlsx";

    // Path of output PDF file
    U16String outputFilePath = outDir + u"RenderUnicodeInOutput_out.pdf";

    // Load the source excel file containing Unicode Supplementary characters
    Workbook wb(inputFilePath);

    // Save the workbook as PDF
    wb.Save(outputFilePath, SaveFormat::Pdf);

    std::cout << "Workbook saved successfully with Unicode Supplementary characters!" << std::endl;

    Aspose::Cells::Cleanup();

    return 0;
}