How to check if the user entered the password for the Windows account correctly?

Question

C++ / C#

There is such a form in visual c++
When the user enters a password and clicks on the "Confirm" button, the program should determine whether the user has entered the correct password. How to make such a check?

Answer 1

Ummm... you're obviously doing something wrong by inventing safety on the knee.
In any case, you can try to use the CreateProcessWithLogonW function - if it works and the process is created, the login is correct.
Once again I emphasize that you are clearly doing something wrong - state the task in more detail.