On Mon, 2015-09-07 at 13:24 +0200, Massinissa Bandou wrote:
>       PoDoFo::PdfObject* obj = acroform->GetObject()-
> >GetDictionary().GetKey(PoDoFo::PdfName("Fields"));
> 

        Hi,
according to PDF 1.7 reference the Fields object is an array:
   (Required) An array of references to the document’s root fields
   (those with no ancestors in the field hierarchy).
The objects in the array are dictionaries (possibly indirect
references). When the "FT" key is "Btn", then it might be a "Button
Field", where one of the subtypes is a checkbox.

I suggest you to download the reference manual and study it there.
There is written plenty of text around it, including examples of the
Pdf "code". It'll be easier for you too, and definitely better than
copy&paste it all here.
        Bye,
        zyx

-- 
http://www.litePDF.cz                                 i...@litepdf.cz



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