(MFC) Create more Complex JSON Document

Sample code to create the following JSON document:

    {  
        "Title": "The Cuckoo's Calling",  
        "Author": "Robert Galbraith",  
        "Genre": "classic crime novel",  
        "Detail": {  
            "Publisher": "Little Brown",  
            "Publication_Year": 2013,  
            "ISBN-13": 9781408704004,  
            "Language": "English",  
            "Pages": 494  
        },  
        "Price": [  
            {  
                "type": "Hardcover",  
                "price": 16.65  
            },  
            {  
                "type": "Kindle Edition",  
                "price": 7.00  
            }  
        ]  
    }  

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

See Also: Using MFC CString in Chilkat

#include <CkJsonObject.h>
#include <CkJsonArray.h>

void ChilkatSample(void)
    {
    CkString strOut;

    CkJsonObject json;

    bool success;

    // The only reason for failure in the following lines of code would be an out-of-memory condition..

    // An index value of -1 is used to append at the end.
    int index = -1;

    success = json.AddStringAt(-1,"Title","The Cuckoo's Calling");
    success = json.AddStringAt(-1,"Author","Robert Galbraith");
    success = json.AddStringAt(-1,"Genre","classic crime novel");

    // Let's create the Detail JSON object:
    success = json.AddObjectAt(-1,"Detail");
    CkJsonObject *detail = json.ObjectAt(json.get_Size() - 1);
    success = detail->AddStringAt(-1,"Publisher","Little Brown");
    success = detail->AddIntAt(-1,"Publication_Year",2013);
    success = detail->AddNumberAt(-1,"ISBN-13","9781408704004");
    success = detail->AddStringAt(-1,"Language","English");
    success = detail->AddIntAt(-1,"Pages",494);
    delete detail;

    // Add the array for Price
    success = json.AddArrayAt(-1,"Price");
    CkJsonArray *aPrice = json.ArrayAt(json.get_Size() - 1);

    // Entry entry in aPrice will be a JSON object.

    // Append a new/empty ojbect to the end of the aPrice array.
    success = aPrice->AddObjectAt(-1);
    // Get the object that was just appended.
    CkJsonObject *priceObj = aPrice->ObjectAt(aPrice->get_Size() - 1);
    success = priceObj->AddStringAt(-1,"type","Hardcover");
    success = priceObj->AddNumberAt(-1,"price","16.65");
    delete priceObj;

    success = aPrice->AddObjectAt(-1);
    priceObj = aPrice->ObjectAt(aPrice->get_Size() - 1);
    success = priceObj->AddStringAt(-1,"type","Kindle Edition");
    success = priceObj->AddNumberAt(-1,"price","7.00");
    delete priceObj;

    delete aPrice;

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


    SetDlgItemText(IDC_EDIT1,strOut.getUnicode());

    }