Delphi DLL

WhatsApp Cloud API Send Message

See more WhatsApp Examples

Demonstrates how to send a message using the WhatsApp Cloud API (Business App) Delphi 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
success: Boolean;
http: HCkHttp;
json: HCkJsonObject;
resp: HCkHttpResponse;

begin
success := False;

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

http := CkHttp_Create();

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

// {
//   "messaging_product": "whatsapp",
//   "to": "16302581871",
//   "type": "template",
//   "template": {
//     "name": "hello_world",
//     "language": {
//       "code": "en_US"
//     }
//   }
// }

json := CkJsonObject_Create();
CkJsonObject_UpdateString(json,'messaging_product','whatsapp');
CkJsonObject_UpdateString(json,'to','15555555555');
CkJsonObject_UpdateString(json,'type','template');
CkJsonObject_UpdateString(json,'template.name','hello_world');
CkJsonObject_UpdateString(json,'template.language.code','en_US');

CkHttp_putAuthToken(http,'EAANrS5....yFB9Ma');
CkHttp_SetRequestHeader(http,'Content-Type','application/json');

resp := CkHttpResponse_Create();
success := CkHttp_HttpJson(http,'POST','https://graph.facebook.com/v18.0/111111111111111/messages',json,'application/json',resp);
if (success = False) then
  begin
    Memo1.Lines.Add(CkHttp__lastErrorText(http));
    Exit;
  end;

Memo1.Lines.Add(IntToStr(CkHttpResponse_getStatusCode(resp)));
Memo1.Lines.Add(CkHttpResponse__bodyStr(resp));

// Here's a screenshot of our WhatsApp test app.

// 

CkHttp_Dispose(http);
CkJsonObject_Dispose(json);
CkHttpResponse_Dispose(resp);

end;