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 <C_CkJsonObjectW.h>

void ChilkatSample(void)
    {
    BOOL success;
    HCkJsonObjectW json;
    const wchar_t *jsonStr;
    HCkJsonObjectW imageObj;
    HCkJsonObjectW thumbObj;

    success = FALSE;

    json = CkJsonObjectW_Create();

    // 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. 
    jsonStr = L"{\"name\": \"donut\",\"image\":{\"fname\": \"donut.jpg\",\"w\": 200,\"h\": 200},\"thumbnail\":{\"fname\": \"donutThumb.jpg\",\"w\": 32,\"h\": 32}}";

    success = CkJsonObjectW_Load(json,jsonStr);
    if (success == FALSE) {
        wprintf(L"%s\n",CkJsonObjectW_lastErrorText(json));
        CkJsonObjectW_Dispose(json);
        return;
    }

    // Get the "image" object.
    imageObj = CkJsonObjectW_Create();
    CkJsonObjectW_ObjectOf2(json,L"image",imageObj);

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

    // Get the "thumbnail" object.
    thumbObj = CkJsonObjectW_Create();
    CkJsonObjectW_ObjectOf2(json,L"thumbnail",thumbObj);

    wprintf(L"thumbnail: fname=%s, width=%d, height=%d\n",CkJsonObjectW_stringOf(thumbObj,L"fname"),CkJsonObjectW_IntOf(thumbObj,L"w")
        ,CkJsonObjectW_IntOf(thumbObj,L"h"));


    CkJsonObjectW_Dispose(json);
    CkJsonObjectW_Dispose(imageObj);
    CkJsonObjectW_Dispose(thumbObj);

    }