(Delphi ActiveX) X.com Create Post

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For more information, see https://docs.x.com/x-api/posts/creation-of-a-post

Chilkat for Delphi Downloads Chilkat ActiveX DLL for Delphi Chilkat non-ActiveX DLL for Delphi * The examples here use the ActiveX DLL.

uses
    Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
    Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Chilkat_TLB;

...

procedure TForm1.Button1Click(Sender: TObject);
var
http: TChilkatHttp;
success: Integer;
json: TChilkatJsonObject;
jsonToken: TChilkatJsonObject;
resp: IChilkatHttpResponse;
sbResponseBody: TChilkatStringBuilder;
jResp: TChilkatJsonObject;
respStatusCode: Integer;
Id: WideString;
Text: WideString;

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

http := TChilkatHttp.Create(Self);

// Implements the following CURL command:

// curl -X POST "https://api.x.com/2/tweets" \
// -H "Authorization: Bearer YOUR_ACCESS_TOKEN" \
// -H "Content-Type: application/json" \
// -d '{"text":"Hello, X.com! This is my first post using the API."}'

// 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.

// {
//   "text": "Hello, X.com! This is my first post using the API."
// }

json := TChilkatJsonObject.Create(Self);
json.UpdateString('text','Hello, X.com! This is my first post using the API.');

// Adds the "Authorization: Bearer YOUR_ACCESS_TOKEN" header.
// Get our access token.
jsonToken := TChilkatJsonObject.Create(Self);
success := jsonToken.LoadFile('qa_data/tokens/x.json');
if (success <> 1) then
  begin
    Memo1.Lines.Add('Failed to load x.json');
    Exit;
  end;

// Adds the "Authorization: Bearer <token>" header.
http.AuthToken := jsonToken.StringOf('access_token');

http.SetRequestHeader('Content-Type','application/json');

resp := http.PostJson3('https://api.x.com/2/tweets','application/json',json.ControlInterface);
if (http.LastMethodSuccess = 0) then
  begin
    Memo1.Lines.Add(http.LastErrorText);
    Exit;
  end;

sbResponseBody := TChilkatStringBuilder.Create(Self);
resp.GetBodySb(sbResponseBody.ControlInterface);

jResp := TChilkatJsonObject.Create(Self);
jResp.LoadSb(sbResponseBody.ControlInterface);
jResp.EmitCompact := 0;

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

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

    Exit;
  end;

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

// {
//   "data": {
//     "id": "1346889436626259968",
//     "text": "Hello, X.com! This is my first post using the API."
//   }
// }

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

Id := jResp.StringOf('data.id');
Text := jResp.StringOf('data.text');
end;