Thread: How to shutdown (or Restart) a pc with C++

Yes, the function is defined in windows.h

dwReserved, however, is not.

dwReserved is, according to MSDN, held to remind you that you're supposed to put there a REASON CODE for shutting down the system, so it knows what to do (take a system snapshot, save the configuration, etc.).

The reason codes are NOT defined in Windows.h.

They are defined in Reason.h (according to MSDN), a file NOT included with MSVC 6.0 and apparently, not available on MSDN. So how the hell can we use such a useful function without the header file?!?!?!

Shadow if you have the header, I'd love a copy. OKiesmokie, if you have the header, I'd love a copy. Either way... how the heck can I find the header?!

Struck out on all counts..

KaZaa only turns up 3 love songs containing the word "reason".

Google seems to think that reason.h is two words, reason and h, and won't search for them together, no matter how hard I try...

Oh well. I'll keep looking. Thanks anyway.

Well, ExitWindows() may be a strike out, but I have found a workaround...

The following site on MSDN utilizes a function called InitiateSystemShutdown().

http://msdn.microsoft.com/library/de...tdown_04ry.asp

Here is some samplecode I ran that shut down my system quite nicely....

Code:

BOOL fResult;

HANDLE hToken;              // handle to process token 
TOKEN_PRIVILEGES tkp;       // pointer to token structure 


int APIENTRY WinMain(HINSTANCE hInstance,
                     HINSTANCE hPrevInstance,
                     LPSTR     lpCmdLine,
                     int       nCmdShow)
{

// Get the current process token handle so we can get shutdown 
// privilege. 
 
if (!OpenProcessToken(GetCurrentProcess(), 
        TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken)) 
    MessageBox(NULL,NULL,"OpenProcessToken failed.", MB_OK | MB_ICONINFORMATION); 
 
// Get the LUID for 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 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) 
    MessageBox(NULL,NULL,"AdjustTokenPrivileges enable failed.",MB_OK | MB_ICONINFORMATION); 
 
// Display the shutdown dialog box and start the time-out countdown. 
 
fResult = InitiateSystemShutdown( 
    NULL,                                  // shut down local computer 
    "Click on the main window and press the Escape key to cancel shutdown.",  // message to user 
    3,                                    // time-out period 
    TRUE,                                 // ask user to close apps 
    TRUE);                                 // reboot after shutdown 
 
if (!fResult) 
{ 
    MessageBox(NULL,NULL,"InitiateSystemShutdown failed.",MB_OK | MB_ICONINFORMATION);
} 
 
// Disable shutdown privilege. 
 
tkp.Privileges[0].Attributes = 0; 
AdjustTokenPrivileges(hToken, FALSE, &tkp, 0, 
        (PTOKEN_PRIVILEGES) NULL, 0); 
 
if (GetLastError() != ERROR_SUCCESS) 
{
    MessageBox(NULL,NULL,"AdjustTokenPrivileges disable failed.",MB_OK | MB_ICONINFORMATION);
} 

return 0;
}

You can set the timer, and the code can be altered to avert shutdown within the timer period, the code for that is included on the website...

Maybe this will finally help the original poster

bunch of kidz...

ROFLMAOPMP!!! You're calling us a bunch of 'kidz'?

In reference to Shadow's Quote, it is a "modification" of the chorus of a song.

"You're perfect yes its true, but when you don't shower you smell like poo."

The real song goes something like this:
"You're perfect yes its true, but without me you're only you."

The song is by Faith No More. I believe its called Midlife Crisis.

- |2iiSc

concerning the initial question.....If it's possible to shutdown windows using C++....I have another question to add....is it possible to restart the computer in DOS MODE?
Thanx in advance

Originally posted by Shadow

Anyhow.
> is it possible to restart the computer in DOS MODE?
Yes it is.

I'm sorry...I shouldn't have worded it that way...could somebody please help me with restarting the computer in MS-DOS mode? I have tried for a long time and can't get it.
Thanx

Hi ( I am new here ).
I am trying to shut down my comp. (or turn off power) with if but I fail. Log off does work, to bad Power off doesn't . So can anyone help me with this problem?

Code:

This DOES work:

    if ( Attempts <= 1 ){
    ExitWindowsEx(EWX_LOGOFF,0);
    } 

This DOESN'T work:

    if ( Attempts <= 1 ){
    ExitWindowsEx(EWX_POWEROFF,0);
    }