(Delphi DLL) X.com Create Post

See more X Examples

Note: This example requires Chilkat v11.0.0 or greater.

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

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, StringBuilder, HttpResponse, JsonObject;

...

procedure TForm1.Button1Click(Sender: TObject);
var
success: Boolean;
http: HCkHttp;
json: HCkJsonObject;
jsonToken: HCkJsonObject;
resp: HCkHttpResponse;
sbResponseBody: HCkStringBuilder;
jResp: HCkJsonObject;
respStatusCode: Integer;
Id: PWideChar;
Text: 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 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 := CkJsonObject_Create();
CkJsonObject_UpdateString(json,'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 := CkJsonObject_Create();
success := CkJsonObject_LoadFile(jsonToken,'qa_data/tokens/x.json');
if (success <> True) then
  begin
    Memo1.Lines.Add('Failed to load x.json');
    Exit;
  end;

// Adds the "Authorization: Bearer <token>" header.
CkHttp_putAuthToken(http,CkJsonObject__stringOf(jsonToken,'access_token'));

resp := CkHttpResponse_Create();
success := CkHttp_HttpJson(http,'POST','https://api.x.com/2/tweets',json,'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)

// {
//   "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 := CkJsonObject__stringOf(jResp,'data.id');
Text := CkJsonObject__stringOf(jResp,'data.text');

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

end;