Delphi ActiveX

WaTrend Send WhatsApp Text

See more WaTrend Examples

Send a WhatsApp text. Delphi ActiveX

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
success: Integer;
http: TChilkatHttp;
req: TChilkatHttpRequest;
sbUrl: TChilkatStringBuilder;
responseBodyStr: WideString;
resp: TChilkatHttpResponse;
sbResponseBody: TChilkatStringBuilder;
respStatusCode: Integer;
jResp: TChilkatJsonObject;
status: WideString;

begin
success := 0;

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

http := TChilkatHttp.Create(Self);

// Use your actual access token instead of 555555555555555555555555555555
req := TChilkatHttpRequest.Create(Self);
req.AddParam('number','84933313xxx');
req.AddParam('type','text');
req.AddParam('message','This is a test message');
req.AddParam('instance_id','609ACF283XXXX');
req.AddParam('access_token','555555555555555555555555555555');

// Note: The WaTrend online documentation indicate a POST should be used.
// However, it seems you might actually need to send a GET request.
// It is unclear.  
// If a GET is neeed, you would just send to the URL w/ query params like this:
sbUrl := TChilkatStringBuilder.Create(Self);
sbUrl.Append('https://app.watrend.com/api/send.php?');
sbUrl.Append(req.GetUrlEncodedParams());
responseBodyStr := http.QuickGetStr(sbUrl.GetAsString());
// The responseBodyStr contains the JSON response from the server..

req.HttpVerb := 'POST';
req.ContentType := 'application/x-www-form-urlencoded';

resp := TChilkatHttpResponse.Create(Self);
success := http.HttpReq('https://app.watrend.com/api/send.php',req.ControlInterface,resp.ControlInterface);
if (success = 0) then
  begin
    Memo1.Lines.Add(http.LastErrorText);
    Exit;
  end;

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

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;

Memo1.Lines.Add(resp.BodyStr);

// Both success and failed responses use 200 status code.

// A success response contains this JSON in the response body:
// {"status":"success", ... }

// A failed response will contain something like this:
// {"status":"error","message":"License Invalidated"}

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

status := jResp.StringOf('status');
Memo1.Lines.Add('status: ' + status);
end;