Delphi DLL

MS Graph Calendar Update Event

See more Microsoft Calendar Examples

Update the properties of an event object. Delphi DLL

uses
    Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
    Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Http, StringBuilder, HttpResponse, JsonObject;

...

procedure TForm1.Button1Click(Sender: TObject);
var
success: Boolean;
http: HCkHttp;
json: HCkJsonObject;
sbRequestBody: HCkStringBuilder;
resp: HCkHttpResponse;
sbResponseBody: HCkStringBuilder;
jResp: HCkJsonObject;
respStatusCode: Integer;
originalStartTimeZone: PWideChar;
originalEndTimeZone: PWideChar;
responseStatusResponse: PWideChar;
responseStatusTime: PWideChar;
recurrence: PWideChar;
iCalUId: PWideChar;
reminderMinutesBeforeStart: Integer;
isOnlineMeeting: Boolean;
onlineMeetingProvider: PWideChar;
isReminderOn: Boolean;
onlineMeetingJoinUrl: PWideChar;
onlineMeetingConferenceId: PWideChar;
onlineMeetingTollNumber: PWideChar;

begin
success := False;

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

http := CkHttp_Create();

// Implements the following CURL command:

// curl -X PATCH https://graph.microsoft.com/v1.0/me/events/{id} \
//   -H "Content-type: application/json" \
//   -d '{
//   "originalStartTimeZone": "originalStartTimeZone-value",
//   "originalEndTimeZone": "originalEndTimeZone-value",
//   "responseStatus": {
//     "response": "",
//     "time": "datetime-value"
//   },
//   "recurrence": null,
//   "iCalUId": "iCalUId-value",
//   "reminderMinutesBeforeStart": 99,
//   "isOnlineMeeting": true,
//   "onlineMeetingProvider": "teamsForBusiness",
//   "isReminderOn": true,
//   "categories": ["Red category"]
// }'

// Use the following online tool to generate HTTP code from a CURL command
// Convert a cURL Command to HTTP Source Code

// Use this online tool to generate code from sample JSON:
// Generate Code to Create JSON

// The following JSON is sent in the request body.

// {
//   "originalStartTimeZone": "originalStartTimeZone-value",
//   "originalEndTimeZone": "originalEndTimeZone-value",
//   "responseStatus": {
//     "response": "",
//     "time": "datetime-value"
//   },
//   "recurrence": null,
//   "iCalUId": "iCalUId-value",
//   "reminderMinutesBeforeStart": 99,
//   "isOnlineMeeting": true,
//   "onlineMeetingProvider": "teamsForBusiness",
//   "isReminderOn": true,
//   "categories": [
//     "Red category"
//   ]
// }

json := CkJsonObject_Create();
CkJsonObject_UpdateString(json,'originalStartTimeZone','originalStartTimeZone-value');
CkJsonObject_UpdateString(json,'originalEndTimeZone','originalEndTimeZone-value');
CkJsonObject_UpdateString(json,'responseStatus.response','');
CkJsonObject_UpdateString(json,'responseStatus.time','datetime-value');
CkJsonObject_UpdateNull(json,'recurrence');
CkJsonObject_UpdateString(json,'iCalUId','iCalUId-value');
CkJsonObject_UpdateInt(json,'reminderMinutesBeforeStart',99);
CkJsonObject_UpdateBool(json,'isOnlineMeeting',True);
CkJsonObject_UpdateString(json,'onlineMeetingProvider','teamsForBusiness');
CkJsonObject_UpdateBool(json,'isReminderOn',True);
CkJsonObject_UpdateString(json,'categories[0]','Red category');

CkHttp_SetRequestHeader(http,'Content-type','application/json');

sbRequestBody := CkStringBuilder_Create();
CkJsonObject_EmitSb(json,sbRequestBody);

resp := CkHttpResponse_Create();
success := CkHttp_HttpSb(http,'PATCH','https://graph.microsoft.com/v1.0/me/events/{id}',sbRequestBody,'utf-8','application/json',resp);
if (success = False) then
  begin
    Memo1.Lines.Add(CkHttp__lastErrorText(http));
    Exit;
  end;

sbResponseBody := CkStringBuilder_Create();
CkHttpResponse_GetBodySb(resp,sbResponseBody);
jResp := CkJsonObject_Create();
CkJsonObject_LoadSb(jResp,sbResponseBody);
CkJsonObject_putEmitCompact(jResp,False);

Memo1.Lines.Add('Response Body:');
Memo1.Lines.Add(CkJsonObject__emit(jResp));

respStatusCode := CkHttpResponse_getStatusCode(resp);
Memo1.Lines.Add('Response Status Code = ' + IntToStr(respStatusCode));
if (respStatusCode >= 400) then
  begin
    Memo1.Lines.Add('Response Header:');
    Memo1.Lines.Add(CkHttpResponse__header(resp));
    Memo1.Lines.Add('Failed.');
    Exit;
  end;

// Sample JSON response:
// (Sample code for parsing the JSON response is shown below)

// {
//   "originalStartTimeZone": "originalStartTimeZone-value",
//   "originalEndTimeZone": "originalEndTimeZone-value",
//   "responseStatus": {
//     "response": "",
//     "time": "datetime-value"
//   },
//   "recurrence": null,
//   "iCalUId": "iCalUId-value",
//   "reminderMinutesBeforeStart": 99,
//   "isOnlineMeeting": true,
//   "onlineMeetingProvider": "teamsForBusiness",
//   "isReminderOn": true,
//   "onlineMeeting": {
//     "joinUrl": "https://teams.microsoft.com/l/meetup-join/19%3ameeting_NzIyNzhlMGEtM2YyZC00ZmY0LTlhNzUtZmZjNWFmZGNlNzE2%40thread.v2/0?context=%7b%22Tid%22%3a%2272f988bf-86f1-41af-91ab-2d7cd011db47%22%2c%22Oid%22%3a%22bc55b173-cff6-457d-b7a1-64bda7d7581a%22%7d",
//     "conferenceId": "177513992",
//     "tollNumber": "+91 22 6241 6885"
//   }
// }

// Sample code for parsing the JSON response...
// Use the following online tool to generate parsing code from sample JSON:
// Generate Parsing Code from JSON

originalStartTimeZone := CkJsonObject__stringOf(jResp,'originalStartTimeZone');
originalEndTimeZone := CkJsonObject__stringOf(jResp,'originalEndTimeZone');
responseStatusResponse := CkJsonObject__stringOf(jResp,'responseStatus.response');
responseStatusTime := CkJsonObject__stringOf(jResp,'responseStatus.time');
recurrence := CkJsonObject__stringOf(jResp,'recurrence');
iCalUId := CkJsonObject__stringOf(jResp,'iCalUId');
reminderMinutesBeforeStart := CkJsonObject_IntOf(jResp,'reminderMinutesBeforeStart');
isOnlineMeeting := CkJsonObject_BoolOf(jResp,'isOnlineMeeting');
onlineMeetingProvider := CkJsonObject__stringOf(jResp,'onlineMeetingProvider');
isReminderOn := CkJsonObject_BoolOf(jResp,'isReminderOn');
onlineMeetingJoinUrl := CkJsonObject__stringOf(jResp,'onlineMeeting.joinUrl');
onlineMeetingConferenceId := CkJsonObject__stringOf(jResp,'onlineMeeting.conferenceId');
onlineMeetingTollNumber := CkJsonObject__stringOf(jResp,'onlineMeeting.tollNumber');

CkHttp_Dispose(http);
CkJsonObject_Dispose(json);
CkStringBuilder_Dispose(sbRequestBody);
CkHttpResponse_Dispose(resp);
CkStringBuilder_Dispose(sbResponseBody);
CkJsonObject_Dispose(jResp);

end;