(MFC) 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.

Chilkat C/C++ Library Downloads MS Visual C/C++ Libs

See Also: Using MFC CString in Chilkat

#include <CkPdf.h>
#include <CkJsonObject.h>

void ChilkatSample(void)
    {
    CkString strOut;

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

    CkPdf pdf;

    // Load a PDF containing 2 remaining unsigned signature fields:
    bool success = pdf.LoadFile("qa_data/pdf/doctor_patient_parent.pdf");
    if (success == false) {
        strOut.append(pdf.lastErrorText());
        strOut.append("\r\n");
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        return;
    }

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

    json.put_EmitCompact(false);
    strOut.append(json.emit());
    strOut.append("\r\n");

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

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

    int i = 0;
    int count_i = json.SizeOfArray("unsignedSigField");
    while (i < count_i) {
        json.put_I(i);
        strVal = json.stringOf("unsignedSigField[i]");
        strOut.append(strVal);
        strOut.append("\r\n");
        i = i + 1;
    }



    SetDlgItemText(IDC_EDIT1,strOut.getUnicode());

    }