B4X

PDF List Unsigned Signature Fields

See more PDF Signatures Examples

Demonstrates how to list the unsigned signature fields in a PDF.

Note: This example requires Chilkat v9.5.0.90 or greater.

B4X

Dim success As Boolean = False

'  This example requires the Chilkat API to have been previously unlocked.
'  See Global Unlock Sample for sample code.

Dim pdf As ChilkatPdf
pdf.Initialize("pdf")

'  Load a PDF containing 2 remaining unsigned signature fields:
success = pdf.LoadFile("qa_data/pdf/doctor_patient_parent.pdf")
If success = False Then
    Log(pdf.LastErrorText)
    Return
End If


'  Note: This example requires Chilkat v9.5.0.90 or greater.
Dim json As ChilkatJsonObject
json.Initialize
pdf.GetUnsignedSigFields(json)

json.EmitCompact = False
Log(json.Emit)

'  Result:
'  {
'    "unsignedSigField": [
'      "doctor_signature",
'      "parent_signature"
'    ]
'  }

'  To iterate over the field names:
Dim strVal As String

Dim i As Int = 0
Dim count_i As Int = json.SizeOfArray("unsignedSigField")
Do While i < count_i
    json.I = i
    strVal = json.StringOf("unsignedSigField[i]")
    Log(strVal)
    i = i + 1
Loop