Why Access Denied while using ExitWindowEx(EWX_REBOOT)

[mathe]

I am using Windows2000 Service Pack2.
And I am using one of Administrators Account to run my program.
It is very strange that ExitWindowEx(EWX_REBOOT,0) will return FALSE.
So I try to use InitiateSystemShutdown(NULL,NULL,5,FALSE,TRUE) & it return FALSE too. The GetLastError() tells that "Access Denied".

Another problem is that when I run MoveFileEx with MOVEFILE_DELAY_UNTIL_REBOOT|MOVEFILE_REPLACE_EXISTING,
the function return TRUE. But after I restart the computer, the file was not moved&replaced. And I could not find new items in register
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\PendingFileRenameOperations
as MSDN says.

Who can help me?
Following is my code:

CopyFile(UNINSTALL_PATH,TEMP_PATH,FALSE);
if(!MoveFileEx(TEMP_PATH,DESTINE_PATH,MOVEFILE_DELAY_UNTIL_REBOOT|MOVEFILE_REPLACE_EXISTING))
{//No Error reported here.
int Error=GetLastError();
FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM,NULL,Error,0,text,1024,NULL);
MessageBox(NULL,text,"MoveFileEx",MB_OK);
}
if(!InitiateSystemShutdown(NULL,NULL,5,FALSE,TRUE)){
int Error=GetLastError();//Access Denied reported.
FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM,NULL,Error,0,text,1024,NULL);
MessageBox(NULL,text,"InitiateSystemShutdown",MB_OK);
}

[prog_st]

估计是在 WINNT 或 WIN2000 下权限不够的问题，请在执行 ExitWindowsEx 前执行以下函数
void CMyDlg::SetPriviles()
{
HANDLE hToken;
TOKEN_PRIVILEGES tkp;
if(!OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES|TOKEN_QUERY,&hToken))
MessageBox("OpenProcessToken Error !","Error");
LookupPrivilegeValue(NULL,SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
tkp.PrivilegeCount = 1;
tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
AdjustTokenPrivileges(hToken,FALSE,&tkp,0,(PTOKEN_PRIVILEGES)NULL,0);
if(GetLastError() != ERROR_SUCCESS)
MessageBox("AdjustTokenPrivileges Error !","Error");
return;
}

[Julienjut]

真是高手
又学到一招
不过没时间去试了

[NowCan]

基本上可以肯定是权限不够。一般你建立的进程都不会有这个权限。解决方法同prog_st(st)