(Visual FoxPro) PDF List Unsigned Signature Fields

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

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

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LOCAL loPdf
LOCAL lnSuccess
LOCAL loJson
LOCAL lcStrVal
LOCAL i
LOCAL lnCount_i

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

* For versions of Chilkat < 10.0.0, use CreateObject('Chilkat_9_5_0.Pdf')
loPdf = CreateObject('Chilkat.Pdf')

* Load a PDF containing 2 remaining unsigned signature fields:
lnSuccess = loPdf.LoadFile("qa_data/pdf/doctor_patient_parent.pdf")
IF (lnSuccess = 0) THEN
    ? loPdf.LastErrorText
    RELEASE loPdf
    CANCEL
ENDIF

* Note: This example requires Chilkat v9.5.0.90 or greater.
* For versions of Chilkat < 10.0.0, use CreateObject('Chilkat_9_5_0.JsonObject')
loJson = CreateObject('Chilkat.JsonObject')
loPdf.GetUnsignedSigFields(loJson)

loJson.EmitCompact = 0
? loJson.Emit()

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

* To iterate over the field names:

i = 0
lnCount_i = loJson.SizeOfArray("unsignedSigField")
DO WHILE i < lnCount_i
    loJson.I = i
    lcStrVal = loJson.StringOf("unsignedSigField[i]")
    ? lcStrVal
    i = i + 1
ENDDO

RELEASE loPdf
RELEASE loJson