Een voorbeeld van de informatie in het helpbestand WIN32.HLP
ExitWindowsEx
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
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