(Delphi DLL) Get a Google Calendar

See more Google Calendar Examples

Demonstrates how to get a particular Google Calendar. The calendar can be referenced by the calendar ID, or by the keyword "primary".

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, JsonObject, Http;

...

procedure TForm1.Button1Click(Sender: TObject);
var
jsonToken: HCkJsonObject;
success: Boolean;
http: HCkHttp;
jsonResponse: PWideChar;
json: HCkJsonObject;
numSettings: Integer;
i: Integer;

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 := CkJsonObject_Create();
success := CkJsonObject_LoadFile(jsonToken,'qa_data/tokens/googleCalendar.json');
if (CkJsonObject_HasMember(jsonToken,'access_token') = False) then
  begin
    Memo1.Lines.Add('No access token found.');
    Exit;
  end;
http := CkHttp_Create();
CkHttp_putAuthToken(http,CkJsonObject__stringOf(jsonToken,'access_token'));

// Let's get the primary calendar.
jsonResponse := CkHttp__quickGetStr(http,'https://www.googleapis.com/calendar/v3/users/me/calendarList/primary');
if (CkHttp_getLastMethodSuccess(http) <> True) then
  begin
    Memo1.Lines.Add(CkHttp__lastErrorText(http));
    Exit;
  end;

Memo1.Lines.Add(jsonResponse);

// A sample response is:

// {
//  "kind": "calendar#calendarListEntry",
//  "etag": "\"1465249947472000\"",
//  "id": "support@chilkatcloud.com",
//  "summary": "support@chilkatcloud.com",
//  "timeZone": "America/Chicago",
//  "colorId": "14",
//  "backgroundColor": "#9fe1e7",
//  "foregroundColor": "#000000",
//  "selected": true,
//  "accessRole": "owner",
//  "defaultReminders": [
//   {
//    "method": "popup",
//    "minutes": 10
//   }
//  ],
//  "notificationSettings": {
//   "notifications": [
//    {
//     "type": "eventCreation",
//     "method": "email"
//    },
//    {
//     "type": "eventChange",
//     "method": "email"
//    },
//    {
//     "type": "eventCancellation",
//     "method": "email"
//    },
//    {
//     "type": "eventResponse",
//     "method": "email"
//    }
//   ]
//  },
//  "primary": true
// }

// It can be parsed like this:
json := CkJsonObject_Create();
CkJsonObject_Load(json,jsonResponse);

Memo1.Lines.Add('kind: ' + CkJsonObject__stringOf(json,'kind'));
Memo1.Lines.Add('id: ' + CkJsonObject__stringOf(json,'id'));

// Examine the notification settings, if any..
numSettings := CkJsonObject_SizeOfArray(json,'notificationSettings.notifications');
if (numSettings > 0) then
  begin
    i := 0;
    while i < numSettings do
      begin
        CkJsonObject_putI(json,i);
        Memo1.Lines.Add('Notification Type: ' + CkJsonObject__stringOf(json,'notificationSettings.notifications[i].type'));
        Memo1.Lines.Add('Notification Method: ' + CkJsonObject__stringOf(json,'notificationSettings.notifications[i].method'));
        i := i + 1;
      end;

  end;

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

end;