谁可以告诉我 ExitWindowsEx 这个函数怎么用？

[ra3]

多谢！

[SeainBlue]

关机、重启、注销

[everandforever]

在VC论坛上搜, 自动关机

[phoex]

ExitWindowsEX(Flags,dwReserved )
dwReserved是保留参数
Flags 有一下选择：
EWX_POWEROFF 关闭电源
EWX_LOGOFF 注销
EWX_REBOOT 重启

[SeainBlue]

在Windows.h中指定

可以看看msdn，上面写的很清楚
第一个参数就可以选择关机、关机重启、注销中的一种

[Kingore]

BOOL ExitWindowsEx(
UINT uFlags, // shutdown operation
DWORD dwReason // shutdown reason
);

关机的代码：
HANDLE hToken;
TOKEN_PRIVILEGES tkp;

// Get a token for this process.

if (!OpenProcessToken(GetCurrentProcess(),
TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken))
error("OpenProcessToken");

// Get the LUID for the shutdown privilege.

LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,
&tkp.Privileges[0].Luid);

tkp.PrivilegeCount = 1; // one privilege to set
tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;

// Get the shutdown privilege for this process.

AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,
(PTOKEN_PRIVILEGES)NULL, 0);

// Cannot test the return value of AdjustTokenPrivileges.

if (GetLastError() != ERROR_SUCCESS)
error("AdjustTokenPrivileges");

// Shut down the system and force all applications to close.

if (!ExitWindowsEx(EWX_SHUTDOWN | EWX_FORCE, 0))
error("ExitWindowsEx");

[IThurricane]

关机并不需要ExitWindowsEx这个API的，下面代码也可以关机

HANDLE hToken;
TOKEN_PRIVILEGES tkp;
BOOL fResult;

// Get a token for this process.

if (!OpenProcessToken(GetCurrentProcess(),
TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken)){
// AfxMessageBox("OpenProcessToken");
}

// Get the LUID for the shutdown privilege.

LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,
&tkp.Privileges[0].Luid);

tkp.PrivilegeCount = 1; // one privilege to set
tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;

// Get the shutdown privilege for this process.

AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,
(PTOKEN_PRIVILEGES)NULL, 0);

// Cannot test the return value of AdjustTokenPrivileges.

if (GetLastError() != ERROR_SUCCESS) {
// AfxMessageBox("AdjustTokenPrivileges");
}

// Shut down the system and force all applications to close.

//if (!ExitWindowsEx(EWX_SHUTDOWN | EWX_FORCE |EWX_POWEROFF, 0)){
// AfxMessageBox("ExitWindowsEx");
//}
fResult=InitiateSystemShutdown(NULL,NULL,0,TRUE,FALSE);
tkp.Privileges[0].Attributes=0;
AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,
(PTOKEN_PRIVILEGES)NULL, 0);
if (GetLastError() != ERROR_SUCCESS) {
// AfxMessageBox("AdjustTokenPrivileges");
}
CDialog::OnOK();
OnClose();