(Delphi ActiveX) Delete a Google Calendar Event

See more Google Calendar Examples

Demonstrates how to delete a Google Calendar event.

For more information, see https://developers.google.com/calendar/v3/reference/events/delete

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

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
jsonToken: TChilkatJsonObject;
success: Integer;
http: TChilkatHttp;
url: WideString;
resp: IChilkatHttpResponse;

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

// This example uses a previously obtained access token having permission for the 
// Google Calendar scope.

// In this example, Get Google Calendar OAuth2 Access Token, the access
// token was saved to a JSON file.  This example fetches the access token from the file..
jsonToken := TChilkatJsonObject.Create(Self);
success := jsonToken.LoadFile('qa_data/tokens/googleCalendar.json');
if (jsonToken.HasMember('access_token') = 0) then
  begin
    Memo1.Lines.Add('No access token found.');
    Exit;
  end;
http := TChilkatHttp.Create(Self);
http.AuthToken := jsonToken.StringOf('access_token');

// Your URL should use the actual calendar ID and the actual event ID for the event to be deleted.
url := 'https://www.googleapis.com/calendar/v3/calendars/your_calendar_id/events/your_event_id';

resp := http.QuickRequest('DELETE',url);
if (http.LastMethodSuccess = 0) then
  begin
    Memo1.Lines.Add(http.LastErrorText);
    Exit;
  end;

if (resp.StatusCode = 204) then
  begin
    // Success.
    Memo1.Lines.Add('Event deleted');
  end
else
  begin
    if (resp.StatusCode = 401) then
      begin
        Memo1.Lines.Add('Try refreshing the access token and then retry...');
      end;

    // Failed. 
    Memo1.Lines.Add(resp.BodyStr);
  end;
end;