Unicode C++

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.

Unicode C++

#include <CkPdfW.h>
#include <CkJsonObjectW.h>

void ChilkatSample(void)
    {
    bool success = false;

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

    CkPdfW pdf;

    // Load a PDF containing 2 remaining unsigned signature fields:
    success = pdf.LoadFile(L"qa_data/pdf/doctor_patient_parent.pdf");
    if (success == false) {
        wprintf(L"%s\n",pdf.lastErrorText());
        return;
    }

    // Note: This example requires Chilkat v9.5.0.90 or greater.
    CkJsonObjectW json;
    pdf.GetUnsignedSigFields(json);

    json.put_EmitCompact(false);
    wprintf(L"%s\n",json.emit());

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

    // To iterate over the field names:
    const wchar_t *strVal = 0;

    int i = 0;
    int count_i = json.SizeOfArray(L"unsignedSigField");
    while (i < count_i) {
        json.put_I(i);
        strVal = json.stringOf(L"unsignedSigField[i]");
        wprintf(L"%s\n",strVal);
        i = i + 1;
    }
    }