Sample code for 30+ languages & platforms
Unicode C++

MS Graph Calendar Create Event

See more Microsoft Calendar Examples

Creates a new event in a specified calendar.

For more details, see https://docs.microsoft.com/en-us/graph/api/calendar-post-events?view=graph-rest-1.0

Chilkat Unicode C++ Downloads

Unicode C++
#include <CkHttpW.h>
#include <CkJsonObjectW.h>
#include <CkHttpResponseW.h>

void ChilkatSample(void)
    {
    bool success = false;

    // This example requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    CkHttpW http;

    // Use your previously obtained access token as shown here:
    //    Get Microsoft Graph OAuth2 Access Token with Calendars.ReadWrite scope.

    CkJsonObjectW jsonToken;
    success = jsonToken.LoadFile(L"qa_data/tokens/msGraphCalendar.json");
    if (success == false) {
        wprintf(L"%s\n",jsonToken.lastErrorText());
        return;
    }

    http.put_AuthToken(jsonToken.stringOf(L"access_token"));

    // Create a JSON body for the HTTP POST
    // Use this online tool to generate the code from sample JSON: 
    // Generate Code to Create JSON

    // {
    //   "subject": "Let's go for lunch",
    //   "body": {
    //     "contentType": "HTML",
    //     "content": "Does mid month work for you?"
    //   },
    //   "start": {
    //       "dateTime": "2019-11-15T12:00:00",
    //       "timeZone": "Pacific Standard Time"
    //   },
    //   "end": {
    //       "dateTime": "2019-11-15T14:00:00",
    //       "timeZone": "Pacific Standard Time"
    //   },
    //   "location":{
    //       "displayName":"Harry's Bar"
    //   },
    //   "attendees": [
    //     {
    //       "emailAddress": {
    //         "address":"adelev@contoso.onmicrosoft.com",
    //         "name": "Adele Vance"
    //       },
    //       "type": "required"
    //     }
    //   ]
    // }

    CkJsonObjectW json;
    json.UpdateString(L"subject",L"Let's go for lunch");
    json.UpdateString(L"body.contentType",L"HTML");
    json.UpdateString(L"body.content",L"Does mid month work for you?");
    json.UpdateString(L"start.dateTime",L"2019-11-15T12:00:00");
    json.UpdateString(L"start.timeZone",L"Pacific Standard Time");
    json.UpdateString(L"end.dateTime",L"2019-11-15T14:00:00");
    json.UpdateString(L"end.timeZone",L"Pacific Standard Time");
    json.UpdateString(L"location.displayName",L"Harry's Bar");
    json.UpdateString(L"attendees[0].emailAddress.address",L"adelev@contoso.onmicrosoft.com");
    json.UpdateString(L"attendees[0].emailAddress.name",L"Adele Vance");
    json.UpdateString(L"attendees[0].type",L"required");

    // POST the JSON to https://graph.microsoft.com/v1.0/me/calendars/{id}/events
    // This is posting to a calendar in the default calendarGroup.

    // Specify the calendar id
    http.SetUrlVar(L"id",L"AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgBGAAADsVyfxjDU406Ic4X7ill8xAcA5_vF7TKKdE6bGCRqXyl2PQAAAgEGAAAA5_vF7TKKdE6bGCRqXyl2PQAClEpRTgAAAA==");
    CkHttpResponseW resp;
    success = http.HttpJson(L"POST",L"https://graph.microsoft.com/v1.0/me/calendars/{$id}/events",json,L"application/json",resp);
    if (success == false) {
        wprintf(L"%s\n",http.lastErrorText());
        return;
    }

    json.Load(resp.bodyStr());
    json.put_EmitCompact(false);

    if (resp.get_StatusCode() != 201) {
        wprintf(L"%s\n",json.emit());
        wprintf(L"Failed, response status code = %d\n",resp.get_StatusCode());
        return;
    }

    wprintf(L"%s\n",json.emit());

    // A sample response:
    // (See code for parsing this response below..)

    // {
    //   "@odata.context": "https://graph.microsoft.com/v1.0/$metadata#users('admin%40chilkat.io')/calendars('AQMkADAwATM0MDAAMS ... AClEpRTgAAAA%3D%3D')/events/$entity",
    //   "@odata.etag": "W/\"5+vF7TKKdE6bGCRqXyl2PQAClIgmmw==\"",
    //   "id": "AQMkADAwAT ... ApRZ7JkAAAA=",
    //   "createdDateTime": "2019-04-26T14:31:39.8791929Z",
    //   "lastModifiedDateTime": "2019-04-26T14:31:41.2753537Z",
    //   "changeKey": "5+vF7TKKdE6bGCRqXyl2PQAClIgmmw==",
    //   "categories": [
    //   ],
    //   "originalStartTimeZone": "Pacific Standard Time",
    //   "originalEndTimeZone": "Pacific Standard Time",
    //   "iCalUId": "040000008200E00074C5B7101A82E00800000000F05DF1C23CFCD40100000000000000001000000009911D155F71EF42A230FEBFE5F7486A",
    //   "reminderMinutesBeforeStart": 15,
    //   "isReminderOn": true,
    //   "hasAttachments": false,
    //   "subject": "Let's go for lunch",
    //   "bodyPreview": "Does mid month work for you?",
    //   "importance": "normal",
    //   "sensitivity": "normal",
    //   "isAllDay": false,
    //   "isCancelled": false,
    //   "isOrganizer": true,
    //   "responseRequested": true,
    //   "seriesMasterId": null,
    //   "showAs": "busy",
    //   "type": "singleInstance",
    //   "webLink": "https://outlook.live.com/owa/?itemid=AQMkADAwATM0MDAAMS1iNTcwL...pRZ7JkAAAA%3D&exvsurl=1&path=/calendar/item",
    //   "onlineMeetingUrl": null,
    //   "recurrence": null,
    //   "responseStatus": {
    //     "response": "organizer",
    //     "time": "0001-01-01T00:00:00Z"
    //   },
    //   "body": {
    //     "contentType": "html",
    //     "content": "<html>\r\n<head>\r\n<meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\">\r\n<meta content=\"text/html; charset=us-ascii\">\r\n</head>\r\n<body>\r\nDoes mid month work for you?\r\n</body>\r\n</html>\r\n"
    //   },
    //   "start": {
    //     "dateTime": "2019-11-15T12:00:00.0000000",
    //     "timeZone": "Pacific Standard Time"
    //   },
    //   "end": {
    //     "dateTime": "2019-11-15T14:00:00.0000000",
    //     "timeZone": "Pacific Standard Time"
    //   },
    //   "location": {
    //     "displayName": "Harry's Bar",
    //     "locationType": "default",
    //     "uniqueId": "Harry's Bar",
    //     "uniqueIdType": "private"
    //   },
    //   "locations": [
    //     {
    //       "displayName": "Harry's Bar",
    //       "locationType": "default",
    //       "uniqueId": "Harry's Bar",
    //       "uniqueIdType": "private"
    //     }
    //   ],
    //   "attendees": [
    //     {
    //       "type": "required",
    //       "status": {
    //         "response": "none",
    //         "time": "0001-01-01T00:00:00Z"
    //       },
    //       "emailAddress": {
    //         "name": "Adele Vance",
    //         "address": "adelev@contoso.onmicrosoft.com"
    //       }
    //     }
    //   ],
    //   "organizer": {
    //     "emailAddress": {
    //       "name": "Matt",
    //       "address": "outlook_3A33FCEB9B74CC15@outlook.com"
    //     }
    //   }
    // }
    // 
    // 

    // Use this online tool to generate parsing code from sample JSON: 
    // Generate Parsing Code from JSON

    const wchar_t *displayName = 0;
    const wchar_t *locationType = 0;
    const wchar_t *uniqueId = 0;
    const wchar_t *uniqueIdType = 0;
    const wchar_t *statusResponse = 0;
    const wchar_t *statusTime = 0;
    const wchar_t *emailAddressName = 0;
    const wchar_t *emailAddressAddress = 0;

    const wchar_t *odataContext = json.stringOf(L"\"@odata.context\"");
    const wchar_t *odataEtag = json.stringOf(L"\"@odata.etag\"");
    const wchar_t *id = json.stringOf(L"id");
    const wchar_t *createdDateTime = json.stringOf(L"createdDateTime");
    const wchar_t *lastModifiedDateTime = json.stringOf(L"lastModifiedDateTime");
    const wchar_t *changeKey = json.stringOf(L"changeKey");
    const wchar_t *originalStartTimeZone = json.stringOf(L"originalStartTimeZone");
    const wchar_t *originalEndTimeZone = json.stringOf(L"originalEndTimeZone");
    const wchar_t *iCalUId = json.stringOf(L"iCalUId");
    const wchar_t *reminderMinutesBeforeStart = json.IntOf(L"reminderMinutesBeforeStart");
    const wchar_t *isReminderOn = json.BoolOf(L"isReminderOn");
    const wchar_t *hasAttachments = json.BoolOf(L"hasAttachments");
    const wchar_t *subject = json.stringOf(L"subject");
    const wchar_t *bodyPreview = json.stringOf(L"bodyPreview");
    const wchar_t *importance = json.stringOf(L"importance");
    const wchar_t *sensitivity = json.stringOf(L"sensitivity");
    const wchar_t *isAllDay = json.BoolOf(L"isAllDay");
    const wchar_t *isCancelled = json.BoolOf(L"isCancelled");
    const wchar_t *isOrganizer = json.BoolOf(L"isOrganizer");
    const wchar_t *responseRequested = json.BoolOf(L"responseRequested");
    const wchar_t *seriesMasterId = json.stringOf(L"seriesMasterId");
    const wchar_t *showAs = json.stringOf(L"showAs");
    const wchar_t *type = json.stringOf(L"type");
    const wchar_t *webLink = json.stringOf(L"webLink");
    const wchar_t *onlineMeetingUrl = json.stringOf(L"onlineMeetingUrl");
    const wchar_t *recurrence = json.stringOf(L"recurrence");
    const wchar_t *responseStatusResponse = json.stringOf(L"responseStatus.response");
    const wchar_t *responseStatusTime = json.stringOf(L"responseStatus.time");
    const wchar_t *bodyContentType = json.stringOf(L"body.contentType");
    const wchar_t *bodyContent = json.stringOf(L"body.content");
    const wchar_t *startDateTime = json.stringOf(L"start.dateTime");
    const wchar_t *startTimeZone = json.stringOf(L"start.timeZone");
    const wchar_t *endDateTime = json.stringOf(L"end.dateTime");
    const wchar_t *endTimeZone = json.stringOf(L"end.timeZone");
    const wchar_t *locationDisplayName = json.stringOf(L"location.displayName");
    const wchar_t *locationLocationType = json.stringOf(L"location.locationType");
    const wchar_t *locationUniqueId = json.stringOf(L"location.uniqueId");
    const wchar_t *locationUniqueIdType = json.stringOf(L"location.uniqueIdType");
    const wchar_t *organizerEmailAddressName = json.stringOf(L"organizer.emailAddress.name");
    const wchar_t *organizerEmailAddressAddress = json.stringOf(L"organizer.emailAddress.address");
    int i = 0;
    int count_i = json.SizeOfArray(L"categories");
    while (i < count_i) {
        json.put_I(i);
        // ...
        i = i + 1;
    }

    i = 0;
    count_i = json.SizeOfArray(L"locations");
    while (i < count_i) {
        json.put_I(i);
        displayName = json.stringOf(L"locations[i].displayName");
        locationType = json.stringOf(L"locations[i].locationType");
        uniqueId = json.stringOf(L"locations[i].uniqueId");
        uniqueIdType = json.stringOf(L"locations[i].uniqueIdType");
        i = i + 1;
    }

    i = 0;
    count_i = json.SizeOfArray(L"attendees");
    while (i < count_i) {
        json.put_I(i);
        type = json.stringOf(L"attendees[i].type");
        statusResponse = json.stringOf(L"attendees[i].status.response");
        statusTime = json.stringOf(L"attendees[i].status.time");
        emailAddressName = json.stringOf(L"attendees[i].emailAddress.name");
        emailAddressAddress = json.stringOf(L"attendees[i].emailAddress.address");
        i = i + 1;
    }

    wprintf(L"Success.\n");
    }