Unicode C++

JSON: Nested Objects

See more JSON Examples

Here we have a JSON object that contains nested JSON objects. This example demonstrates how to access the contents of the nested objects.

{
  "name": "donut",
  "image":
    {
    "fname": "donut.jpg",
    "w": 200,
    "h": 200
    },
  "thumbnail":
    {
    "fname": "donutThumb.jpg",
    "w": 32,
    "h": 32
    }
}

Unicode C++

#include <CkJsonObjectW.h>

void ChilkatSample(void)
    {
    bool success = false;

    CkJsonObjectW json;

    // This is the above JSON with whitespace chars removed (SPACE, TAB, CR, and LF chars).
    // The presence of whitespace chars for pretty-printing makes no difference to the Load
    // method. 
    const wchar_t *jsonStr = L"{\"name\": \"donut\",\"image\":{\"fname\": \"donut.jpg\",\"w\": 200,\"h\": 200},\"thumbnail\":{\"fname\": \"donutThumb.jpg\",\"w\": 32,\"h\": 32}}";

    success = json.Load(jsonStr);
    if (success == false) {
        wprintf(L"%s\n",json.lastErrorText());
        return;
    }

    // Get the "image" object.
    CkJsonObjectW imageObj;
    json.ObjectOf2(L"image",imageObj);

    wprintf(L"image: fname=%s, width=%d, height=%d\n",imageObj.stringOf(L"fname"),imageObj.IntOf(L"w"),imageObj.IntOf(L"h"));

    // Get the "thumbnail" object.
    CkJsonObjectW thumbObj;
    json.ObjectOf2(L"thumbnail",thumbObj);

    wprintf(L"thumbnail: fname=%s, width=%d, height=%d\n",thumbObj.stringOf(L"fname"),thumbObj.IntOf(L"w"),thumbObj.IntOf(L"h"));
    }