The ExitWindowsEx function either logs off, shuts down, or shuts down and restarts the system. <br><br>BOOL ExitWindowsEx(<br><br> UINT uFlags, // shutdown operation<br> DWORD dwReserved // reserved<br> <br> <br><br>Parameters<br><br>uFlags<br><br>Specifies the type of shutdown. This parameter must be some combination of the following values: <br><br>Value Meaning<br>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.<br>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.<br>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.<br>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.<br>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.<br> <br><br>dwReserved<br><br>Reserved; this parameter is ignored. <br><br> <br><br>Return Values<br><br>If the function succeeds, the return value is nonzero.<br>If the function fails, the return value is zero. To get extended error information, call GetLastError. <br><br>