ExitWindowsEx

The ExitWindowsEx function either logs off the current user, shuts down the system, or shuts down and restarts the system. It sends the WM_QUERYENDSESSION message to all applications to determine if they can be terminated.

Declaration

Declare Function ExitWindowsEx Lib "user32" Alias "ExitWindowsEx" (ByVal uFlags As Long, ByVal dwReserved As Long) As Long

Parameters

uFlags
Specifies the type of shutdown.

EWX_LOGOFF

Shuts down all processes running in the security context of the process that called the ExitWindowsEx function. Then it logs the user off.

EWX_FORCEIFHUNG

Forces processes to terminate if they do not respond to the WM_QUERYENDSESSION or WM_ENDSESSION message. This flag is ignored if EWX_FORCE is used.

EWX_FORCE

Forces processes to terminate. When this flag is set, the system does not send the WM_QUERYENDSESSION and WM_ENDSESSION messages. This can cause the applications to lose data. Therefore, you should only use this flag in an emergency.

EWX_SHUTDOWN

Shuts down the system to a point at which it is safe to turn off the power. All file buffers have been flushed to disk, and all running processes have stopped.

EWX_REBOOT

Shuts down the system and then restarts the system.

EWX_POWEROFF

Shuts down the system and turns off the power. The system must support the power-off feature.

dwReserved
Reserved; this parameter is ignored.

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