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 <C_CkStringBuilderW.h>
#include <C_CkJsonObjectW.h>
#include <C_CkFormatsW.h>

void ChilkatSample(void)
    {
    BOOL success;
    HCkStringBuilderW sbCard;
    HCkJsonObjectW json;
    HCkFormatsW fmt;
    HCkJsonObjectW jsonOut;

    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.
    sbCard = CkStringBuilderW_Create();
    CkStringBuilderW_AppendLine(sbCard,L"BEGIN:VCARD",TRUE);
    CkStringBuilderW_AppendLine(sbCard,L"VERSION:3.0",TRUE);
    CkStringBuilderW_AppendLine(sbCard,L"N:Smith;Alex;;;",TRUE);
    CkStringBuilderW_AppendLine(sbCard,L"FN:Alex Smith",TRUE);
    CkStringBuilderW_AppendLine(sbCard,L"ORG:Example Company",TRUE);
    CkStringBuilderW_AppendLine(sbCard,L"TITLE:Sales Manager",TRUE);
    CkStringBuilderW_AppendLine(sbCard,L"TEL;TYPE=CELL:+1-555-0100",TRUE);
    CkStringBuilderW_AppendLine(sbCard,L"EMAIL:alex.smith@example.com",TRUE);
    CkStringBuilderW_AppendLine(sbCard,L"URL:https://www.example.com",TRUE);
    CkStringBuilderW_AppendLine(sbCard,L"END:VCARD",TRUE);

    json = CkJsonObjectW_Create();
    CkJsonObjectW_UpdateSb(json,L"payload.text",sbCard);
    CkJsonObjectW_UpdateInt(json,L"render.moduleSize",6);
    CkJsonObjectW_UpdateString(json,L"output.path",L"qa_output/qr_vcard.png");
    CkJsonObjectW_UpdateBool(json,L"output.overwrite",TRUE);
    CkJsonObjectW_UpdateString(json,L"output.return",L"none");

    fmt = CkFormatsW_Create();
    jsonOut = CkJsonObjectW_Create();
    success = CkFormatsW_QrCode(fmt,L"generate",json,jsonOut);
    if (success == FALSE) {
        wprintf(L"%s\n",CkFormatsW_lastErrorText(fmt));
        CkStringBuilderW_Dispose(sbCard);
        CkJsonObjectW_Dispose(json);
        CkFormatsW_Dispose(fmt);
        CkJsonObjectW_Dispose(jsonOut);
        return;
    }

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


    CkStringBuilderW_Dispose(sbCard);
    CkJsonObjectW_Dispose(json);
    CkFormatsW_Dispose(fmt);
    CkJsonObjectW_Dispose(jsonOut);

    }