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Delphi DLL Web API Examples

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(Delphi DLL) MS Graph Create Calendar

Creates a new calendar.

For more details, see https://docs.microsoft.com/en-us/graph/api/user-post-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, Http, HttpResponse, JsonObject;

...

procedure TForm1.Button1Click(Sender: TObject);
var
http: HCkHttp;
jsonToken: HCkJsonObject;
success: Boolean;
json: HCkJsonObject;
resp: HCkHttpResponse;
odataContext: PWideChar;
id: PWideChar;
name: PWideChar;
color: PWideChar;
changeKey: PWideChar;
canShare: PWideChar;
canViewPrivateItems: PWideChar;
canEdit: PWideChar;
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'));

// Create a JSON body for the HTTP POST
// {
//   "name": "Work"
// }
json := CkJsonObject_Create();
CkJsonObject_UpdateString(json,'name','Work');

// POST the JSON to https://graph.microsoft.com/v1.0/me/calendars
resp := CkHttp_PostJson3(http,'https://graph.microsoft.com/v1.0/me/calendars','application/json',json);
if (CkHttp_getLastMethodSuccess(http) = False) then
  begin
    Memo1.Lines.Add(CkHttp__lastErrorText(http));
    Exit;
  end;

CkJsonObject_Load(json,CkHttpResponse__bodyStr(resp));
CkJsonObject_putEmitCompact(json,False);

if (CkHttpResponse_getStatusCode(resp) <> 201) then
  begin
    Memo1.Lines.Add(CkJsonObject__emit(json));
    Memo1.Lines.Add('Failed, response status code = ' + IntToStr(CkHttpResponse_getStatusCode(resp)));
    CkHttpResponse_Dispose(resp);
    Exit;
  end;
CkHttpResponse_Dispose(resp);

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

// A sample response:
// {
//   "@odata.context": "https://graph.microsoft.com/v1.0/$metadata#users('admin%40chilkat.io')/calendars/$entity",
//   "id": "AQMkAD...TgAAAA==",
//   "name": "Work",
//   "color": "auto",
//   "changeKey": "5+vF7T...HjDcA==",
//   "canShare": true,
//   "canViewPrivateItems": true,
//   "canEdit": true,
//   "owner": {
//     "name": "...",
//     "address": "outlook_3A33...4CC15@outlook.com"
//   }
// }

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

odataContext := CkJsonObject__stringOf(json,'"@odata.context"');
id := CkJsonObject__stringOf(json,'id');
name := CkJsonObject__stringOf(json,'name');
color := CkJsonObject__stringOf(json,'color');
changeKey := CkJsonObject__stringOf(json,'changeKey');
canShare := CkJsonObject_BoolOf(json,'canShare');
canViewPrivateItems := CkJsonObject_BoolOf(json,'canViewPrivateItems');
canEdit := CkJsonObject_BoolOf(json,'canEdit');
ownerName := CkJsonObject__stringOf(json,'owner.name');
ownerAddress := CkJsonObject__stringOf(json,'owner.address');

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

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

end;

 

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