Pascal (Lazarus/Delphi)

Outlook Calendar Delete Event

See more Outlook Calendar Examples

Removes the specified event from the containing calendar.

If the event is a meeting, deleting the event on the organizer's calendar sends a cancellation message to the meeting attendees.

Pascal (Lazarus/Delphi)

program ChilkatDemo;

// Demonstrates using the Chilkat Pascal wrapper via the C bridge DLL.
// Builds as a console application under Lazarus (FPC) or Delphi.

{$IFDEF FPC}
  {$MODE DELPHI}
{$ENDIF}
{$APPTYPE CONSOLE}

uses
  {$IFDEF UNIX}
  cthreads,
  {$ENDIF}
  SysUtils,
  CkDllLoader,
  Chilkat.Http,
  Chilkat.StringBuilder,
  Chilkat.HttpResponse,
  Chilkat.JsonObject;

// ---------------------------------------------------------------------------

procedure RunDemo;
var
  success: Boolean;
  http: THttp;
  jsonToken: TJsonObject;
  eventId: string;
  sbUrl: TStringBuilder;
  url: string;
  resp: THttpResponse;

begin
  success := False;

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

  http := THttp.Create;

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

  jsonToken := TJsonObject.Create;
  success := jsonToken.LoadFile('qa_data/tokens/outlookCalendar.json');
  if (success = False) then
    begin
      WriteLn(jsonToken.LastErrorText);
      Exit;
    end;

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

  //  Specify the ID of the event to be deleted.
  eventId := 'AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgBGAAADsVyfxjDU406Ic4X7ill8xAcA5_vF7TKKdE6bGCRqXyl2PQAAAgENAAAA5_vF7TKKdE6bGCRqXyl2PQAEaDkEcAAAAA==';

  sbUrl := TStringBuilder.Create;
  sbUrl.Append('https://graph.microsoft.com/v1.0/me/events/');
  sbUrl.Append(eventId);

  url := sbUrl.GetAsString();
  resp := THttpResponse.Create;
  success := http.HttpNoBody('DELETE',url,resp);
  if (success = False) then
    begin
      WriteLn(http.LastErrorText);
      Exit;
    end;

  WriteLn('Response status code = ' + resp.StatusCode);

  //  The send succeeded if the response status code = 204.
  if (resp.StatusCode <> 204) then
    begin
      //  If the event for the given ID does not exist, you'll get a 404 response code with this response body:

      //  		{
      //  		  "error": {
      //  		    "code": "ErrorItemNotFound",
      //  		    "message": "The specified object was not found in the store.",
      //  		    "innerError": {
      //  		      "date": "2021-04-19T00:02:04",
      //  		      "request-id": "0eac929a-6ee9-42f8-bb56-39799331c6f4",
      //  		      "client-request-id": "0eac929a-6ee9-42f8-bb56-39799331c6f4"
      //  		    }
      //  		  }
      //  		}

      WriteLn(resp.BodyStr);
      WriteLn('Failed');
    end
  else
    begin
      WriteLn('Event deleted.');
    end;


  http.Free;
  jsonToken.Free;
  sbUrl.Free;
  resp.Free;

end;

// ---------------------------------------------------------------------------

begin

  try
    RunDemo;
  except
    on E: Exception do
      WriteLn('Unhandled exception: ', E.ClassName, ': ', E.Message);
  end;

  WriteLn;
  {$IFDEF MSWINDOWS}
  WriteLn('Press Enter to exit...');
  ReadLn;
  {$ENDIF}
end.