sign a PDF-Document

i want to develop a program, which can open a PDF-Document, put a signature from my signaturepad on it and save the document.
The program is in Delphi.
Can I use the SDK for this problem?
Is there any example code for this problem?

With kind regards
R. Lorenz

Yes, you can certainly do this with PDFNet.

If your signature includes some sort of appearance, such as an image, or free hand signature, then there are a few options to do this. If you let me know what kind of visual appearance you want to add, I can provide specifics. Or you can check our sample code, or this forum, for that info.

If you want to do a cryptographic digital signature, then please see the Digital Signature sample, and also read this forum post.