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Extract FDF data from a PDF

To extract data from PDF to FDF, then export FDF as XFDF

PTPDFDoc *doc = [[PTPDFDoc alloc] initWithFilepath: filename];

// Extract form fields data to FDF.
// Optionally use e_ptboth to extract both forms and annotations
PTFDFDoc *doc_fields = [doc FDFExtract: e_ptforms_only];
[doc_fields SetPDFFileName: filename];
[doc_fields SaveFDFDocToFile: output_fdf_filename];

// Export form fields data from FDF to XFDF.
[doc_fields SaveAsXFDF: output_xfdf_filename];

PDF Form Fill and Form Data Extraction
Full sample code which illustrates basic FDF merge/extract functionality and full support for FDF (Forms Data Format)

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