Hello Dan!
Here is some update that might be interesting for you. Some time ago we fixed issue #3739 that is related to check box simulation in PDF export. Now we are changing default behavior so starting from the very next version check boxes will be simulated as ticks. To change to crosses please try the following before you export:
doc.SaveOptions.PdfExportCheckBoxFontName = "Wingdings 2";
doc.SaveOptions.PdfExportCheckBoxEmptySign = '\xf0a3';
doc.SaveOptions.PdfExportCheckBoxSelectedSign = '\xf054';
Note that you should apply these changes if only you plan to upgrade. Please contact us if you have any questions.
Regards,
Viktor Sazhaev
Software Engineer,
Aspose Auckland Team