简单问题，答对者有分

[HKer_007]

为什么偶在winXP中用VC6.0编程，调用ExitwindowEx(EWX_SHUTDOWN)没有作用？
怎样用程序改变访问权限？

[jy98huxhu]

up

[lishush]

在Window98以上版本中关机时要有权限的，具体的做法我这里没有，你搜索以前的帖子，肯定有的

[young_wind]

程序必须拥有SE_SHUTDOWN_NAME权限才能调用关闭函数
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");

[mfkzj]

//取得当前进程的标记
if (!OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken))
::AfxMessageBox("OpenProcessToken");
// Get the LUID for the shutdown privilege.
//寻找关闭系统的特权并赋值给变量TOKEN_PRIVILEGES
LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
//设置特权
tkp.PrivilegeCount = 1; // one privilege to set

tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
// Get the shutdown privilege for this process.
//为当前的进程取得关闭系统的特权
AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
// Cannot test the return value of AdjustTokenPrivileges.
if (GetLastError() != ERROR_SUCCESS)
// ::AfxMessageBox("AdjustTokenPrivileges");
// 关闭系统
if (!ExitWindowsEx(EWX_POWEROFF|EWX_FORCE,0L))
{
if(!ExitWindowsEx(EWX_REBOOT|EWX_FORCE,0L))
{
if(!ExitWindowsEx(EWX_SHUTDOWN|EWX_FORCE,0L))
{
if(!ExitWindows(0,0))
::AfxMessageBox("重启动错误");
}
}
}

[mfkzj]

//取得当前进程的标记
if (!OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken))
::AfxMessageBox("OpenProcessToken");
// Get the LUID for the shutdown privilege.
//寻找关闭系统的特权并赋值给变量TOKEN_PRIVILEGES
LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
//设置特权
tkp.PrivilegeCount = 1; // one privilege to set

tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
// Get the shutdown privilege for this process.
//为当前的进程取得关闭系统的特权
AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
// Cannot test the return value of AdjustTokenPrivileges.
if (GetLastError() != ERROR_SUCCESS)
// ::AfxMessageBox("AdjustTokenPrivileges");
// 关闭系统
if (!ExitWindowsEx(EWX_POWEROFF|EWX_FORCE,0L))
{
if(!ExitWindowsEx(EWX_REBOOT|EWX_FORCE,0L))
{
if(!ExitWindowsEx(EWX_SHUTDOWN|EWX_FORCE,0L))
{
if(!ExitWindows(0,0))
::AfxMessageBox("重启动错误");
}
}
}

[sh210]

同意mfkzj()