(Delphi DLL) MS Graph Calendars List

Get all the user's calendars (/calendars navigation property), get the calendars from the default calendar group or from a specific calendar group.

For more details, see https://docs.microsoft.com/en-us/graph/api/user-list-calendars?view=graph-rest-1.0

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
http: HCkHttp;
jsonToken: HCkJsonObject;
success: Boolean;
strResponse: PWideChar;
json: HCkJsonObject;
odataContext: PWideChar;
i: Integer;
count_i: Integer;
id: PWideChar;
name: PWideChar;
color: PWideChar;
changeKey: PWideChar;
canShare: Boolean;
canViewPrivateItems: Boolean;
canEdit: Boolean;
ownerName: PWideChar;
ownerAddress: PWideChar;

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

http := CkHttp_Create();

// Use your previously obtained access token as shown here:
//    Get Microsoft Graph OAuth2 Access Token with Calendars.ReadWrite scope.

jsonToken := CkJsonObject_Create();
success := CkJsonObject_LoadFile(jsonToken,'qa_data/tokens/msGraphCalendar.json');
if (success = False) then
  begin
    Memo1.Lines.Add(CkJsonObject__lastErrorText(jsonToken));
    Exit;
  end;
CkHttp_putAuthToken(http,CkJsonObject__stringOf(jsonToken,'access_token'));

// Send a GET request to https://graph.microsoft.com/v1.0/me/calendars
strResponse := CkHttp__quickGetStr(http,'https://graph.microsoft.com/v1.0/me/calendars');
if (CkHttp_getLastMethodSuccess(http) = False) then
  begin
    Memo1.Lines.Add(CkHttp__lastErrorText(http));
    Exit;
  end;

json := CkJsonObject_Create();
CkJsonObject_Load(json,strResponse);
CkJsonObject_putEmitCompact(json,False);

if (CkHttp_getLastStatus(http) <> 200) then
  begin
    Memo1.Lines.Add(CkJsonObject__emit(json));
    Memo1.Lines.Add('Failed, response status code = ' + IntToStr(CkHttp_getLastStatus(http)));
    Exit;
  end;

Memo1.Lines.Add(CkJsonObject__emit(json));

// Sample output:

// {
//   "@odata.context": "https://graph.microsoft.com/v1.0/$metadata#users('admin%40chilkat.io')/calendars",
//   "value": [
//     {
//       "id": "AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgBGAAADsVyfxjDU406Ic4X7ill8xAcA5_vF7TKKdE6bGCRqXyl2PQAAAgEGAAAA5_vF7TKKdE6bGCRqXyl2PQAAAiCsAAAA",
//       "name": "Calendar",
//       "color": "auto",
//       "changeKey": "5+vF7TKKdE6bGCRqXyl2PQAAAAAiEQ==",
//       "canShare": true,
//       "canViewPrivateItems": true,
//       "canEdit": true,
//       "owner": {
//         "name": "...",
//         "address": "outlook_3A33FCEB9B74CC15@outlook.com"
//       }
//     },
//     {
//       "id": "AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgBGAAADsVyfxjDU406Ic4X7ill8xAcA5_vF7TKKdE6bGCRqXyl2PQAAAgEGAAAA5_vF7TKKdE6bGCRqXyl2PQAClEpRTgAAAA==",
//       "name": "Work",
//       "color": "auto",
//       "changeKey": "5+vF7TKKdE6bGCRqXyl2PQAClHjDcA==",
//       "canShare": true,
//       "canViewPrivateItems": true,
//       "canEdit": true,
//       "owner": {
//         "name": "...",
//         "address": "outlook_3A33FCEB9B74CC15@outlook.com"
//       }
//     }
//   ]
// }
// 
// Use this online tool to generate parsing code from sample JSON: 
// Generate Parsing Code from JSON

odataContext := CkJsonObject__stringOf(json,'"@odata.context"');
i := 0;
count_i := CkJsonObject_SizeOfArray(json,'value');
while i < count_i do
  begin
    CkJsonObject_putI(json,i);
    id := CkJsonObject__stringOf(json,'value[i].id');
    name := CkJsonObject__stringOf(json,'value[i].name');
    color := CkJsonObject__stringOf(json,'value[i].color');
    changeKey := CkJsonObject__stringOf(json,'value[i].changeKey');
    canShare := CkJsonObject_BoolOf(json,'value[i].canShare');
    canViewPrivateItems := CkJsonObject_BoolOf(json,'value[i].canViewPrivateItems');
    canEdit := CkJsonObject_BoolOf(json,'value[i].canEdit');
    ownerName := CkJsonObject__stringOf(json,'value[i].owner.name');
    ownerAddress := CkJsonObject__stringOf(json,'value[i].owner.address');
    i := i + 1;
  end;

Memo1.Lines.Add('Success.');

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

end;