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(Unicode C++) JSON: Nested ObjectsHere 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 } } Note: This example requires Chilkat v11.0.0 or greater.
#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")); } |
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