Detailed Description

The visual appearance of signatures.

A signature may have a visual appearance on a page of the document. The visual appearance is optional and has no effect on the validity of the signature. Because of this and because a visual appearance may cover important content of the page, it is recommended to create invisible signatures by default.

Typically, a visual appearance is created for forms with a dedicated area reserved for the appearance. Other transaction documents, e.g. invoices, correspondence, or bank statements, are usually signed without a visual appearance.

The appearance can be positioned on a page using PdfToolsSign_Appearance_GetPageNumber, PdfToolsSign_Appearance_GetTop, PdfToolsSign_Appearance_GetRight, PdfToolsSign_Appearance_GetBottom, and PdfToolsSign_Appearance_GetLeft. It is recommended to set either PdfToolsSign_Appearance_GetTop or PdfToolsSign_Appearance_GetBottom and PdfToolsSign_Appearance_GetRight or PdfToolsSign_Appearance_GetLeft. If all are NULL, the default is to position the appearance in the lower right corner with 12 pt (1/6 inch or 4.2 mm) distance to the bottom and right edge of the page, i.e. Bottom = 12 and Right = 12.

The documentation for this class was generated from the following file:

include/PdfTools_Types.h