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ExitWindowsEx

The ExitWindowsEx function either logs off, shuts down, or shuts down and restarts the system.

VB4-32,5,6
Declare Function ExitWindowsEx Lib "user32" Alias "ExitWindowsEx" (ByVal uFlags As Long, ByVal dwReserved As Long) As Long

Operating Systems Supported
Requires Windows NT 3.1 or later; Requires Windows 95 or later

Library
User32

Parameter Information
- uFlags
Specifies the type of shutdown. This parameter must be some combination of the following values:
EWX_FORCE
Forces processes to terminate. When this flag is set, Windows does not send the messages WM_QUERYENDSESSION and WM_ENDSESSION to the applications currently running in the system. This can cause the applications to lose data. Therefore, you should only use this flag in an emergency.
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_POWEROFF
Shuts down the system and turns off the power. The system must support the power-off feature.
Windows NT: The calling process must have the SE_SHUTDOWN_NAME privilege. For more information, see the following Remarks section.
Windows 95: Security privileges are not supported or required.
EWX_REBOOT
Shuts down the system and then restarts the system.
Windows NT: The calling process must have the SE_SHUTDOWN_NAME privilege. For more information, see the following Remarks section.
Windows 95: Security privileges are not supported or required.
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.
Windows NT: The calling process must have the SE_SHUTDOWN_NAME privilege. For more information, see the following Remarks section.
Windows 95: Security privileges are not supported or required.

- dwReserved
Reserved; this parameter is ignored.

Return Values
If the function succeeds, the return value is nonzero.

If the function fails, the return value is zero. To get extended error information, call GetLastError.

Last update: 07 April 2006