(Delphi DLL) Outlook Calendar List Events

See more Outlook Calendar Examples

Retrieve a list of events in a calendar.

For more information, see https://docs.microsoft.com/en-us/graph/api/calendar-list-events?view=graph-rest-1.0&tabs=http

Chilkat for Delphi Downloads Chilkat non-ActiveX DLL for Delphi Chilkat ActiveX DLL for Delphi * The examples here use the non-ActiveX DLL.

uses
    Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
    Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Http, HttpResponse, JsonObject;

...

procedure TForm1.Button1Click(Sender: TObject);
var
http: HCkHttp;
jsonToken: HCkJsonObject;
success: Boolean;
calendarId: PWideChar;
resp: HCkHttpResponse;
json: HCkJsonObject;
originalStartTimeZone: PWideChar;
originalEndTimeZone: PWideChar;
responseStatusResponse: PWideChar;
responseStatusTime: PWideChar;
iCalUId: PWideChar;
reminderMinutesBeforeStart: Integer;
isReminderOn: Boolean;
i: Integer;
count_i: Integer;

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

http := CkHttp_Create();

// Use your previously obtained access token here: Get Outlook Calendar OAuth2 Access Token (Azure AD v2.0 Endpoint).

jsonToken := CkJsonObject_Create();
success := CkJsonObject_LoadFile(jsonToken,'qa_data/tokens/outlookCalendar.json');
if (success = False) then
  begin
    Memo1.Lines.Add(CkJsonObject__lastErrorText(jsonToken));
    Exit;
  end;
CkHttp_putAuthToken(http,CkJsonObject__stringOf(jsonToken,'access_token'));

// Specify the ID of the calendar to list.
calendarId := 'AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgBGAAADsVyfxjDU406Ic4X7ill8xAcA5_vF7TKKdE6bGCRqXyl2PQAAAgEGAAAA5_vF7TKKdE6bGCRqXyl2PQAAAiCsAAAA';

CkHttp_SetUrlVar(http,'id',calendarId);

// To list the events in the default calendar, use the following URL: https://graph.microsoft.com/v1.0/me/calendars/events

resp := CkHttp_QuickRequest(http,'GET','https://graph.microsoft.com/v1.0/me/calendars/{$id}/events');
if (CkHttp_getLastMethodSuccess(http) <> True) then
  begin
    Memo1.Lines.Add(CkHttp__lastErrorText(http));
    Exit;
  end;
Memo1.Lines.Add('Response status code = ' + IntToStr(CkHttpResponse_getStatusCode(resp)));

// The HTTP request succeeded if the response status code = 200.
if (CkHttpResponse_getStatusCode(resp) <> 200) then
  begin
    Memo1.Lines.Add(CkHttpResponse__bodyStr(resp));
    Memo1.Lines.Add('Failed');
    CkHttpResponse_Dispose(resp);
    Exit;
  end;

json := CkJsonObject_Create();
CkJsonObject_Load(json,CkHttpResponse__bodyStr(resp));
CkJsonObject_putEmitCompact(json,False);
Memo1.Lines.Add(CkJsonObject__emit(json));

// Here is a sample response:

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

// {
//   "value": [
//     {
//       "originalStartTimeZone": "originalStartTimeZone-value",
//       "originalEndTimeZone": "originalEndTimeZone-value",
//       "responseStatus": {
//         "response": "",
//         "time": "datetime-value"
//       },
//       "iCalUId": "iCalUId-value",
//       "reminderMinutesBeforeStart": 99,
//       "isReminderOn": true
//     }
//   ]
// }

CkHttpResponse_Dispose(resp);

i := 0;
count_i := CkJsonObject_SizeOfArray(json,'value');
while i < count_i do
  begin
    CkJsonObject_putI(json,i);
    originalStartTimeZone := CkJsonObject__stringOf(json,'value[i].originalStartTimeZone');
    originalEndTimeZone := CkJsonObject__stringOf(json,'value[i].originalEndTimeZone');
    responseStatusResponse := CkJsonObject__stringOf(json,'value[i].responseStatus.response');
    responseStatusTime := CkJsonObject__stringOf(json,'value[i].responseStatus.time');
    iCalUId := CkJsonObject__stringOf(json,'value[i].iCalUId');
    reminderMinutesBeforeStart := CkJsonObject_IntOf(json,'value[i].reminderMinutesBeforeStart');
    isReminderOn := CkJsonObject_BoolOf(json,'value[i].isReminderOn');
    i := i + 1;
  end;

CkHttp_Dispose(http);
CkJsonObject_Dispose(jsonToken);
CkJsonObject_Dispose(json);

end;