Help in sending images to the Internet by post in AHK

[Sergey29]

There is a site to which you want to send images. The image is on the computer. The site has instructions on how to form a request: <form method= "message" action="http://rucaptcha.com/in.php" enctype= "multipart / form data">
<Input type= 'hidden' name= 'method' value= 'message'>
Your key:
< < input Type= "text" name= " key "value= " key YOUR_API">
Captcha file:
<input Type= "file" name= "file">
<Input type= "submit" value= "Download and get code">
</form>

Site with full description: https://rucaptcha.com/api-rucaptcha#language

Help to make the request correctly for the website, https://rucaptcha.com/api-rucaptcha#language