Recaptcha Box - Autoit

#include<IE.au3>
#include<string.au3>
#include <GUIConstantsEx.au3>
#include <StaticConstants.au3>
#include <WindowsConstants.au3>
$url = 'https://www.google.com/recaptcha/api2/demo'
$g_recaptcha_response = RecaptchaBox($url)
ClipPut($g_recaptcha_response)
MsgBox(0,'g_recaptcha_response',$g_recaptcha_response)

Func RecaptchaBox($url)
Local $oIE = _IECreateEmbedded()
$Form1 = GUICreate("ReCaptcha Box", 321, 473, 555, 160)
$obj = GUICtrlCreateObj($oIE, 0, 0, 316, 468)
_IENavigate($oIE, $url)
$site_key = _StringBetween(_IEDocReadHTML($oIE),'data-sitekey="','"')[0]
_IEDocWriteHTML($oIE,'<div class="g-recaptcha" data-sitekey="'&$site_key&'"></div><script src="https://www.google.com/recaptcha/api.js"></script>')
GUISetState(@SW_SHOW)
While 1
    $g_recaptcha_response = _StringBetween(_StringBetween(_IEDocReadHTML($oIE),'<textarea name="g-recaptcha-response"','/textarea>')[0],'>','<')[0]
    if Not $g_recaptcha_response = '' Then ExitLoop
WEnd
GUIDelete($Form1)
Return $g_recaptcha_response
EndFunc