Unicode 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. Unicode C++

#include <CkStringBuilderW.h>
#include <CkJsonObjectW.h>
#include <CkFormatsW.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.
    CkStringBuilderW sbCard;
    sbCard.AppendLine(L"BEGIN:VCARD",true);
    sbCard.AppendLine(L"VERSION:3.0",true);
    sbCard.AppendLine(L"N:Smith;Alex;;;",true);
    sbCard.AppendLine(L"FN:Alex Smith",true);
    sbCard.AppendLine(L"ORG:Example Company",true);
    sbCard.AppendLine(L"TITLE:Sales Manager",true);
    sbCard.AppendLine(L"TEL;TYPE=CELL:+1-555-0100",true);
    sbCard.AppendLine(L"EMAIL:alex.smith@example.com",true);
    sbCard.AppendLine(L"URL:https://www.example.com",true);
    sbCard.AppendLine(L"END:VCARD",true);

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

    CkFormatsW fmt;
    CkJsonObjectW jsonOut;
    success = fmt.QrCode(L"generate",json,jsonOut);
    if (success == false) {
        wprintf(L"%s\n",fmt.lastErrorText());
        return;
    }

    wprintf(L"vCard length: %d\n",sbCard.get_Length());
    wprintf(L"QR version: %d\n",jsonOut.IntOf(L"symbols[0].selectedEncoding.version"));
    wprintf(L"modules: %d x %d\n",jsonOut.IntOf(L"symbols[0].dimensions.modulesWide"),jsonOut.IntOf(L"symbols[0].dimensions.modulesHigh"));
    wprintf(L"image: %d x %d pixels\n",jsonOut.IntOf(L"outputs[0].width"),jsonOut.IntOf(L"outputs[0].height"));

    //  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
    }