Google Calendar v3

Read and write Google Calendar v3 from Delphi. Manage events, free/busy ranges, calendars and access-control lists with service-account or OAuth 2.0 user authentication.

TsgcHTTPGoogleCloud_Calendar_Client

Typed Google Calendar v3 client — events.list / insert / update / delete, calendars CRUD, freebusy.query, plus the standard service-account or OAuth user auth flows.

Component class

TsgcHTTPGoogleCloud_Calendar_Client

Platforms

Windows, macOS, Linux, iOS, Android

Edition

Standard / Professional / Enterprise

Load credentials, list events, insert

Provide a service-account JSON or an OAuth user-token, then call ListEvents, InsertEvent, UpdateEvent and DeleteEvent.

uses
  sgcHTTP;

var
  Calendar: TsgcHTTPGoogleCloud_Calendar_Client;
begin
  Calendar := TsgcHTTPGoogleCloud_Calendar_Client.Create(nil);
  Calendar.GoogleCloudOptions.ServiceAccountJSON.LoadFromFile('service-account.json');

  // list upcoming events
  Memo1.Text := Calendar.ListEvents('primary');

  // insert event
  Calendar.InsertEvent('primary',
    '{"summary":"Quick sync","start":{"dateTime":"2026-05-15T10:00:00Z"},"end":{"dateTime":"2026-05-15T10:30:00Z"}}');
end;
// uses: sgcHTTP
TsgcHTTPGoogleCloud_Calendar_Client *Calendar = new TsgcHTTPGoogleCloud_Calendar_Client(this);
Calendar->GoogleCloudOptions->ServiceAccountJSON->LoadFromFile("service-account.json");

Memo1->Text = Calendar->ListEvents("primary");

What's inside

A typed client for the Calendar v3 REST surface with the same auth flow as the other Google Cloud components.

Event CRUD

ListEvents, GetEvent, InsertEvent, UpdateEvent, PatchEvent, DeleteEvent, QuickAdd map to the events v3 endpoints.

Calendars / ACLs

ListCalendars, GetCalendar, InsertCalendar, DeleteCalendar, ListACL, InsertACL manage the calendar list and access-control rules.

Free/busy

FreeBusy queries the freebusy.query endpoint over a list of calendars and a time range — useful for scheduling assistants.

Service account or OAuth

Domain-wide service-account delegation works for Workspace tenants. For consumer accounts pair with TsgcHTTP_OAuth2_Client and supply the user's access token.

Push notifications

Use WatchEvents to register a Calendar webhook (push channel) — the matching incoming notifications can be handled by TsgcWebSocketHTTPServer.

JSON in, JSON out

Every method returns the raw Calendar v3 JSON response — no shadow type system — so you can work directly with Google's schemas.

Specifications & references

Authoritative sources for the API this component implements.

Documentation & Demos

Deep-link to the component reference, grab the ready-to-run demo project, and download the trial.

Online Help — Google Calendar Client Full property, method and event reference for this component.
Demo Project — Demos\20.HTTP_Protocol\03.Google Ready-to-run example project. Ships inside the sgcWebSockets package — download the trial below.
Technical Document (PDF) Features, quick start, code samples for Delphi & C++ Builder and primary-source references — this component only.
User Manual (PDF) Comprehensive manual covering every component in the library.

Ready to Use Google Calendar from Delphi?

Download the free trial and integrate Google Calendar v3 into your Delphi applications.