Delphi ActiveX

Outlook Calendar List Events

See more Outlook Calendar Examples

Retrieve a list of events in a calendar. Delphi ActiveX

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

...

procedure TForm1.Button1Click(Sender: TObject);
var
success: Integer;
http: TChilkatHttp;
jsonToken: TChilkatJsonObject;
calendarId: WideString;
resp: TChilkatHttpResponse;
json: TChilkatJsonObject;
originalStartTimeZone: WideString;
originalEndTimeZone: WideString;
responseStatusResponse: WideString;
responseStatusTime: WideString;
iCalUId: WideString;
reminderMinutesBeforeStart: Integer;
isReminderOn: Integer;
i: Integer;
count_i: Integer;

begin
success := 0;

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

http := TChilkatHttp.Create(Self);

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

jsonToken := TChilkatJsonObject.Create(Self);
success := jsonToken.LoadFile('qa_data/tokens/outlookCalendar.json');
if (success = 0) then
  begin
    Memo1.Lines.Add(jsonToken.LastErrorText);
    Exit;
  end;

http.AuthToken := jsonToken.StringOf('access_token');

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

http.SetUrlVar('id',calendarId);

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

resp := TChilkatHttpResponse.Create(Self);
success := http.HttpNoBody('GET','https://graph.microsoft.com/v1.0/me/calendars/{$id}/events',resp.ControlInterface);
if (success = 0) then
  begin
    Memo1.Lines.Add(http.LastErrorText);
    Exit;
  end;

Memo1.Lines.Add('Response status code = ' + IntToStr(resp.StatusCode));

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

json := TChilkatJsonObject.Create(Self);
json.Load(resp.BodyStr);
json.EmitCompact := 0;
Memo1.Lines.Add(json.Emit());

// 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
//     }
//   ]
// }

i := 0;
count_i := json.SizeOfArray('value');
while i < count_i do
  begin
    json.I := i;
    originalStartTimeZone := json.StringOf('value[i].originalStartTimeZone');
    originalEndTimeZone := json.StringOf('value[i].originalEndTimeZone');
    responseStatusResponse := json.StringOf('value[i].responseStatus.response');
    responseStatusTime := json.StringOf('value[i].responseStatus.time');
    iCalUId := json.StringOf('value[i].iCalUId');
    reminderMinutesBeforeStart := json.IntOf('value[i].reminderMinutesBeforeStart');
    isReminderOn := json.BoolOf('value[i].isReminderOn');
    i := i + 1;
  end;
end;