C++ Requires Chilkat v11.7.0+

Create a vCard (Contact) QR Code

See more QR Code Examples

Demonstrates a QR code that adds a contact to a phone when scanned. The text is a vCard, the standard format for contact details: lines between BEGIN:VCARD and END:VCARD, each ending with CRLF. A vCard is fairly long, so the symbol is larger than one holding a web address. Leave out the fields that are not needed to keep it small. C++

#include <CkStringBuilder.h>
#include <CkJsonObject.h>
#include <CkFormats.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.

    //  The second argument of AppendLine is cktrue to end each line with CRLF.
    CkStringBuilder sbCard;
    sbCard.AppendLine("BEGIN:VCARD",true);
    sbCard.AppendLine("VERSION:3.0",true);
    sbCard.AppendLine("N:Smith;Alex;;;",true);
    sbCard.AppendLine("FN:Alex Smith",true);
    sbCard.AppendLine("ORG:Example Company",true);
    sbCard.AppendLine("TITLE:Sales Manager",true);
    sbCard.AppendLine("TEL;TYPE=CELL:+1-555-0100",true);
    sbCard.AppendLine("EMAIL:alex.smith@example.com",true);
    sbCard.AppendLine("URL:https://www.example.com",true);
    sbCard.AppendLine("END:VCARD",true);

    CkJsonObject json;
    json.UpdateSb("payload.text",sbCard);
    json.UpdateInt("render.moduleSize",6);
    json.UpdateString("output.path","qa_output/qr_vcard.png");
    json.UpdateBool("output.overwrite",true);
    json.UpdateString("output.return","none");

    CkFormats fmt;
    CkJsonObject jsonOut;
    success = fmt.QrCode("generate",json,jsonOut);
    if (success == false) {
        std::cout << fmt.lastErrorText() << "\r\n";
        return;
    }

    std::cout << "vCard length: " << sbCard.get_Length() << "\r\n";
    std::cout << "QR version: " << jsonOut.IntOf("symbols[0].selectedEncoding.version") << "\r\n";
    std::cout << "modules: " << jsonOut.IntOf("symbols[0].dimensions.modulesWide") << " x " << jsonOut.IntOf("symbols[0].dimensions.modulesHigh") << "\r\n";
    std::cout << "image: " << jsonOut.IntOf("outputs[0].width") << " x " << jsonOut.IntOf("outputs[0].height") << " pixels" << "\r\n";

    //  The image written to qa_output/qr_vcard.png:

    //  

    //  Sample output:

    //  vCard length: 197
    //  QR version: 10
    //  modules: 57 x 57
    //  image: 390 x 390 pixels
    }