I am downloading a file from the internet in my c++ app. But I dont want the user to be able to see the file when its downloaded.

Ive seen it done before, just not sure how its done. The reason being is that my application you need to login, it connects to my mysql database and logs in. Then it downloads a file and launches it into another application. Its a DLL thats downloaded.

The DLL has no protection which is why I want it to be invisible when I download into the windows folder to be disguised with all the other .DLLs (only not show up)