Set Default Font while rendering spreadsheet to images with C++

Please use the ImageOrPrintOptions.GetDefaultFont() property to set the default font while rendering spreadsheets to images. This property will only be effective when the default font of the workbook could not render your characters. The default font specified with ImageOrPrintOptions.GetDefaultFont() property is used for all those cells which have invalid or non-existent fonts.

Set Default Font while rendering spreadsheet to images

The following sample code creates a workbook, adds some text in cell A4 of the first worksheet, and sets its font to invalid or non-existent font. Then, it takes two images of the worksheet. The first image is taken by setting the ImageOrPrintOptions.GetDefaultFont() property to Courier New and the second image is taken by setting the ImageOrPrintOptions.GetDefaultFont() property to Times New Roman.

This is the output image after setting the ImageOrPrintOptions.GetDefaultFont() property to Courier New.

This is the output image after setting the ImageOrPrintOptions.GetDefaultFont() property to Times New Roman.

Sample Code

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

using namespace Aspose::Cells;
using namespace Aspose::Cells::Drawing;

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

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

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

    // Create workbook object
    Workbook wb;

    // Set default font of the workbook to none
    Style s = wb.GetDefaultStyle();
    s.GetFont().SetName(u"");
    wb.SetDefaultStyle(s);

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

    // Access cell A4 and add some text inside it
    Cell cell = ws.GetCells().Get(u"A4");
    cell.PutValue(u"This text has some unknown or invalid font which does not exist.");

    // Set the font of cell A4 which is unknown
    Style st = cell.GetStyle();
    st.GetFont().SetName(u"UnknownNotExist");
    st.GetFont().SetSize(20);
    st.SetIsTextWrapped(true);
    cell.SetStyle(st);

    // Set first column width and fourth column height
    ws.GetCells().SetColumnWidth(0, 80);
    ws.GetCells().SetRowHeight(3, 60);

    // Create image or print options
    ImageOrPrintOptions opts;
    opts.SetOnePagePerSheet(true);
    opts.SetImageType(ImageType::Png);

    // Render worksheet image with Courier New as default font
    opts.SetDefaultFont(u"Courier New");
    SheetRender sr(ws, opts);
    sr.ToImage(0, outDir + u"out_courier_new_out.png");

    // Render worksheet image again with Times New Roman as default font
    opts.SetDefaultFont(u"Times New Roman");
    SheetRender sr2(ws, opts);
    sr2.ToImage(0, outDir + u"times_new_roman_out.png");

    Aspose::Cells::Cleanup();
    return 0;
}