Show Windows' user switching screen

Question

I want to do (programmatically, using WinAPI) exactly the same what Windows does when you click on 'Switch User' in the Start Menu. Namely, to show the screen where all available user accounts are listed and you can switch to another account still being logged on as the previous one. As far as I know it's called 'fast user switching'. I have no credentials, my task is to let users of my app switch to another account using their own credentials.

Also, is there a way to know, if the option is enabled in the Start menu? Because if it is not, I don't want to show the option in my app as well.

UPDATE

I have used ::ExitWindowsEx() for logging off, but there is no EWX_ flag for switching.

Regards,

Answer 1

It sounds like you want the WTSDisconnectSession() function:

Disconnects the logged-on user from the specified Remote Desktop Services session without closing the session. If the user subsequently logs on to the same Remote Desktop Session Host (RD Session Host) server, the user is reconnected to the same session.

You use it like this:

WTSDisconnectSession(WTS_CURRENT_SERVER_HANDLE, WTS_CURRENT_SESSION, FALSE);