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(Perl) PDF List Unsigned Signature FieldsSee more PDF Signatures ExamplesDemonstrates how to list the unsigned signature fields in a PDF. Note: This example requires Chilkat v9.5.0.90 or greater.
use chilkat(); # This example requires the Chilkat API to have been previously unlocked. # See Global Unlock Sample for sample code. $pdf = chilkat::CkPdf->new(); # Load a PDF containing 2 remaining unsigned signature fields: $success = $pdf->LoadFile("qa_data/pdf/doctor_patient_parent.pdf"); if ($success == 0) { print $pdf->lastErrorText() . "\r\n"; exit; } # Note: This example requires Chilkat v9.5.0.90 or greater. $json = chilkat::CkJsonObject->new(); $pdf->GetUnsignedSigFields($json); $json->put_EmitCompact(0); print $json->emit() . "\r\n"; # Result: # { # "unsignedSigField": [ # "doctor_signature", # "parent_signature" # ] # } # To iterate over the field names: $i = 0; $count_i = $json->SizeOfArray("unsignedSigField"); while ($i < $count_i) { $json->put_I($i); $strVal = $json->stringOf("unsignedSigField[i]"); print $strVal . "\r\n"; $i = $i + 1; } |
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