How to delay shutdown / restart / hibernate in Windows 7 or Windows 8 in VC ++
I am using a vs2012 based app developed using C ++.
If the application is running and some user handlers and triggers restart / exit or hibernate, the restart / shutdown should be suspended until the application is processed.
After the application finishes processing, the windows must resume for restart / shutdown.
I would really appreciate if some links or example code might be available
thank
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1 answer
I did something like this
bool shutdownSystemWin(EShutdownActions action)
{
HANDLE hToken;
TOKEN_PRIVILEGES tkp;
// Get a token for this process.
if (!OpenProcessToken(GetCurrentProcess(),
TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken))
return false;
// 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);
if (GetLastError() != ERROR_SUCCESS)
return false;
// Shut down the system and force all applications to close.
UINT flags = EWX_FORCE;
switch (action)
{
case EShutdownActions::Shutdown:
flags |= EWX_SHUTDOWN;
break;
case EShutdownActions::PowerOff:
flags |= EWX_POWEROFF;
break;
case EShutdownActions::SuspendToRAM:
return SetSuspendState(FALSE, FALSE, FALSE);
case EShutdownActions::Hibernate:
return SetSuspendState(TRUE, FALSE, FALSE);
break;
case EShutdownActions::Reboot:
flags |= EWX_REBOOT;
break;
case EShutdownActions::LogOff:
flags |= EWX_LOGOFF;
break;
}
if (!ExitWindowsEx(flags,
SHTDN_REASON_MAJOR_OPERATINGSYSTEM |
SHTDN_REASON_MINOR_UPGRADE |
SHTDN_REASON_FLAG_PLANNED))
return false;
//shutdown was successful
return true;
}
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