Chilkat Examples

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Delphi DLL Web API Examples

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(Delphi DLL) Twitter - Get Single Tweet (by ID)

Demonstrates how to fetch a single tweet given an ID. This example uses application-only OAuth2 authentication.

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;
url: PWideChar;
strJson: PWideChar;
json: HCkJsonObject;

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

// This application uses application-only authentication.
// It uses the token previously obtained as shown in this example:  Twitter Application-Only Authentication

http := CkHttp_Create();

// Set the OAuth2 token previously obtained via application-only authentication.
CkHttp_putAuthToken(http,'TWITTER_OAUTH2_TOKEN');

// A sample GET looks like this:
// GET https://api.twitter.com/1.1/statuses/show.json?id=210462857140252672
url := 'https://api.twitter.com/1.1/statuses/show.json?id=TWEET_ID';
strJson := CkHttp__quickGetStr(http,url);
if (CkHttp_getLastMethodSuccess(http) <> True) then
  begin
    Memo1.Lines.Add(CkHttp__lastErrorText(http));
    Exit;
  end;

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

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

// A sample JSON response is shown below.
// To generate JSON parsing code, paste the sample JSON response into
// Generate JSON Parsing Source Code

// {
//   "created_at": "Mon Aug 27 23:35:55 +0000 2018",
//   "id": 1034223013313404928,
//   "id_str": "1034223013313404928",
//   "text": "The v9.5.0.75 release is underway.  Alpine Linux and OpenBSD will be included in this release..",
//   "truncated": false,
//   "entities": {
//     "hashtags": [
//     ],
//     "symbols": [
//     ],
//     "user_mentions": [
//     ],
//     "urls": [
//     ]
//   },
//   "source": "\u003ca href=\"http:\/\/twitter.com\" rel=\"nofollow\"\u003eTwitter Web Client\u003c\/a\u003e",
//   "in_reply_to_status_id": null,
//   "in_reply_to_status_id_str": null,
//   "in_reply_to_user_id": null,
//   "in_reply_to_user_id_str": null,
//   "in_reply_to_screen_name": null,
//   "user": {
//     "id": 85647455,
//     "id_str": "85647455",
//     "name": "Chilkat Software",
//     "screen_name": "chilkatsoft",
//     "location": "",
//     "description": "",
//     "url": "https:\/\/t.co\/hSTR4sOuis",
//     "entities": {
//       "url": {
//         "urls": [
//           {
//             "url": "https:\/\/t.co\/hSTR4sOuis",
//             "expanded_url": "http:\/\/www.chilkatsoft.com",
//             "display_url": "chilkatsoft.com",
//             "indices": [
//               0,
//               23
//             ]
//           }
//         ]
//       },
//       "description": {
//         "urls": [
//         ]
//       }
//     },
//     "protected": false,
//     "followers_count": 112,
//     "friends_count": 0,
//     "listed_count": 4,
//     "created_at": "Tue Oct 27 19:56:13 +0000 2009",
//     "favourites_count": 0,
//     "utc_offset": null,
//     "time_zone": null,
//     "geo_enabled": false,
//     "verified": false,
//     "statuses_count": 62,
//     "lang": "en",
//     "contributors_enabled": false,
//     "is_translator": false,
//     "is_translation_enabled": false,
//     "profile_background_color": "C0DEED",
//     "profile_background_image_url": "http:\/\/abs.twimg.com\/images\/themes\/theme1\/bg.png",
//     "profile_background_image_url_https": "https:\/\/abs.twimg.com\/images\/themes\/theme1\/bg.png",
//     "profile_background_tile": false,
//     "profile_image_url": "http:\/\/pbs.twimg.com\/profile_images\/785893001012744195\/clLweDSg_normal.jpg",
//     "profile_image_url_https": "https:\/\/pbs.twimg.com\/profile_images\/785893001012744195\/clLweDSg_normal.jpg",
//     "profile_link_color": "1DA1F2",
//     "profile_sidebar_border_color": "C0DEED",
//     "profile_sidebar_fill_color": "DDEEF6",
//     "profile_text_color": "333333",
//     "profile_use_background_image": true,
//     "has_extended_profile": false,
//     "default_profile": true,
//     "default_profile_image": false,
//     "following": null,
//     "follow_request_sent": null,
//     "notifications": null,
//     "translator_type": "none"
//   },
//   "geo": null,
//   "coordinates": null,
//   "place": null,
//   "contributors": null,
//   "is_quote_status": false,
//   "retweet_count": 0,
//   "favorite_count": 2,
//   "favorited": false,
//   "retweeted": false,
//   "lang": "en"
// }
// 

CkHttp_Dispose(http);
CkJsonObject_Dispose(json);

end;

 

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