C++ Google Drive: Get Starting pageToken for Listing Future Changes

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Gets the starting pageToken for listing future changes.

Documentation: https://developers.google.com/drive/v3/reference/changes/getStartPageToken

#include <CkRest.h>
#include <CkOAuth2.h>
#include <CkStringBuilder.h>
#include <CkJsonObject.h>

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

    //   Provide a previously obtained OAuth2 access token.
    CkOAuth2 oauth2;
    oauth2.put_AccessToken("OAUTH2_ACCESS_TOKEN");
    rest.SetAuthOAuth2(oauth2);

    success = rest.Connect("www.googleapis.com",443,true,true);
    if (success != true) {
        std::cout << rest.lastErrorText() << "\r\n";
        return;
    }

    rest.AddQueryParam("teamDriveId","0AEd3EhGff2SaUk9PVA");
    rest.AddQueryParam("supportsTeamDrives","true");

    CkStringBuilder sbJson;
    success = rest.FullRequestNoBodySb("GET","/drive/v3/changes/startPageToken",sbJson);
    if (success != true) {
        std::cout << rest.lastErrorText() << "\r\n";
        return;
    }

    if (rest.get_ResponseStatusCode() != 200) {
        std::cout << "Received error response code: " << rest.get_ResponseStatusCode() << "\r\n";
        std::cout << "Response body:" << "\r\n";
        std::cout << sbJson.getAsString() << "\r\n";
        return;
    }

    CkJsonObject json;
    json.LoadSb(sbJson);

    //  The following code parses the JSON response.
    //  A sample JSON response is shown below the sample code.
    const char *kind = 0;
    const char *startPageToken = 0;

    kind = json.stringOf("kind");
    startPageToken = json.stringOf("startPageToken");

    std::cout << "Example Completed." << "\r\n";
    }

Sample JSON Response Body

{
  "kind": "drive#startPageToken",
  "startPageToken": "13"
}