Unicode C++ GMail: Get a specific message (format="minimal")

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Gets a specific message using format=minimal.

Documentation: https://developers.google.com/gmail/api/v1/reference/users/messages/get

#include <CkRestW.h>
#include <CkOAuth2W.h>
#include <CkStringBuilderW.h>
#include <CkJsonObjectW.h>

void ChilkatSample(void)
    {
    CkRestW rest;
    bool success;

    //   Provide a previously obtained OAuth2 access token.
    CkOAuth2W oauth2;
    oauth2.put_AccessToken(L"OAUTH2_ACCESS_TOKEN");
    rest.SetAuthOAuth2(oauth2);

    success = rest.Connect(L"www.googleapis.com",443,true,true);
    if (success != true) {
        wprintf(L"%s\n",rest.lastErrorText());
        return;
    }

    rest.AddPathParam(L"messageId",L"15fc237e79da4174");

    rest.AddQueryParam(L"format",L"minimal");

    CkStringBuilderW sbJson;
    success = rest.FullRequestNoBodySb(L"GET",L"/gmail/v1/users/me/messages/messageId",sbJson);
    if (success != true) {
        wprintf(L"%s\n",rest.lastErrorText());
        return;
    }

    if (rest.get_ResponseStatusCode() != 200) {
        wprintf(L"Received error response code: %d\n",rest.get_ResponseStatusCode());
        wprintf(L"Response body:\n");
        wprintf(L"%s\n",sbJson.getAsString());
        return;
    }

    CkJsonObjectW json;
    json.LoadSb(sbJson);

    //  The following code parses the JSON response.
    //  A sample JSON response is shown below the sample code.
    const wchar_t *id = 0;
    const wchar_t *threadId = 0;
    const wchar_t *snippet = 0;
    const wchar_t *historyId = 0;
    const wchar_t *internalDate = 0;
    int sizeEstimate;
    int i;
    int count_i;
    const wchar_t *strVal = 0;

    id = json.stringOf(L"id");
    threadId = json.stringOf(L"threadId");
    snippet = json.stringOf(L"snippet");
    historyId = json.stringOf(L"historyId");
    internalDate = json.stringOf(L"internalDate");
    sizeEstimate = json.IntOf(L"sizeEstimate");
    i = 0;
    count_i = json.SizeOfArray(L"labelIds");
    while (i < count_i) {
        json.put_I(i);
        strVal = json.stringOf(L"labelIds[i]");
        i = i + 1;
    }

    wprintf(L"Example Completed.\n");
    }

Sample JSON Response Body

{
  "id": "15fc237e79da4174",
  "threadId": "15fc237e79da4174",
  "labelIds": [
    "IMPORTANT",
    "SENT",
    "INBOX"
  ],
  "snippet": "This is a test email with 2 attachments.",
  "historyId": "1582",
  "internalDate": "1510791964000",
  "sizeEstimate": 11153
}