Newsgroup: it.comp.lang.visual-basic
Titolo: Aiuto exitwindowex

Ho usato questa funzione per arrestare il sistema in w95, notando in seguito
che in windows nt non funziona affatto.
qualcuno sa spiegarmi il perchè ???.
Dove posso trovare qualche documentazione sulla funzione delle funzioni api
e sui relativi parametri???
Ringrazio in anticipo chi vorrà rispondermi.

Ti invio la pagina del win32help che riguarda questa funzione API.
Ciao Marco
The ExitWindowsEx function either logs off, shuts down, or shuts down and
restarts the system.
BOOL ExitWindowsEx(
    UINT uFlags, // shutdown operation
    DWORD dwReserved  // reserved
   );
Parameters
uFlags
Specifies the type of shutdown. This parameter must be some combination of
the following values:
Value Meaning
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.
Remarks
The ExitWindowsEx function returns as soon as it has initiated the shutdown.
The shutdown or logoff then proceeds asynchronously.
During a shutdown or log-off operation, applications that are shut down are
allowed a specific amount of time to respond to the shutdown request. If the
time expires, Windows displays a dialog box that allows the user to forcibly
shut down the application, to retry the shutdown, or to cancel the shutdown
request. If the EWX_FORCE value is specified, Windows always forces
applications to close and does not display the dialog box.
The ExitWindowsEx function sends a separate notification message,
CTRL_SHUTDOWN_EVENT or CTRL_LOGOFF_EVENT as the situation warrants, to
console processes. A console process routes these messages to its
HandlerRoutine functions, which are added and removed by calls to the
SetConsoleCtrlHandler function. ExitWindowsEx sends these notification
messages asynchronously; thus, an application cannot assume that the console
notification messages have been handled when a call to ExitWindowsEx
returns.
Windows NT: To shut down or restart the system, the calling process must use
the AdjustTokenPrivileges function to enable the SE_SHUTDOWN_NAME privilege.
For more information about security privileges, see Privileges.
Windows 95: Security privileges are not supported or required.
See Also
AdjustTokenPrivileges, ExitWindows, HandlerRoutine, SetConsoleCtrlHandler