Information: Exiting Windows

This is a discussion on Information: Exiting Windows within the C++ Programming forums, part of the General Programming Boards category; This may come to a shock to most of you, but the function to exit windows is.. YES, ExitWindows() Code: ...

  1. #1
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    Post Information: Exiting Windows

    This may come to a shock to most of you, but the function to exit windows is.. YES, ExitWindows()

    Code:
    The ExitWindows function logs the current user off. 
    
    BOOL ExitWindows(
    
        DWORD dwReserved,	// reserved 
        UINT uReserved 	// reserved 
       );
    There is an ExitWindowsEx() function too.

    Code:
    The ExitWindowsEx function either logs off, shuts down, or shuts down and restarts the system. 
    
    BOOL ExitWindowsEx(
    
        UINT uFlags,	// shutdown operation
        DWORD dwReserved 	// reserved
       );
    the flags are:

    EWX_FORCE Forces processes to terminate. When this flag is set, Windows does not send the messages WM_QUERYENDSESSION and WM_ENDSESSION to the applications currently running in the system. This can cause the applications to lose data. Therefore, you should only use this flag in an emergency.

    EWX_LOGOFF Shuts down all processes running in the security context of the process that called the ExitWindowsEx function. Then it logs the user off.

    EWX_POWEROFF Shuts down the system and turns off the power. The system must support the power-off feature.Windows NT: The calling process must have the SE_SHUTDOWN_NAME privilege. For more information, see the following Remarks section. Windows 95: Security privileges are not supported or required.

    EWX_REBOOT Shuts down the system and then restarts the system. Windows NT: The calling process must have the SE_SHUTDOWN_NAME privilege. For more information, see the following Remarks section. Windows 95: Security privileges are not supported or required.

    EWX_SHUTDOWN Shuts down the system to a point at which it is safe to turn off the power. All file buffers have been flushed to disk, and all running processes have stopped. Windows NT: The calling process must have the SE_SHUTDOWN_NAME privilege. For more information, see the following Remarks section. Windows 95: Security privileges are not supported or required.
    Hope that helps you, (none of you probly cared, but.. OH WELL!)

    [EDIT]Tried by best to make the flags readable[/EDIT]
    Last edited by Okiesmokie; 05-12-2002 at 10:30 AM.
    "There are three kinds of people in the world...
    Those that can count and those that can't."

  2. #2
    Xei
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    Heres source for Windows NT/2000/XP Shutdown

    Here is the source code to shut down the computer for Windows NT/2000/XP

    Code:
    #include "windows.h"
    #include "iostream.h"
    
    
    
    
    
    
    int main(int argc, char* argv[])
    {
    	TOKEN_PRIVILEGES tkp;
    	HANDLE hToken;
    	OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY,&hToken); //We now have a Token for this Process.
    	//Now we must find the LUID ###'s for Shutting down the computer in Windows NT.
    	LookupPrivilegeValue(NULL,SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid); //Should now have the LUID Stored in our Privilege.
    	//Must set the privilege count.
    	tkp.PrivilegeCount = 1; //We are only setting one privilege for now.
    	tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED; //Set this Privilege to Enabled. Otherwise it would disable it.
    	AdjustTokenPrivileges(hToken,FALSE,&tkp,0,NULL,0);
    	if (GetLastError() != ERROR_SUCCESS)
    	{
    		cout<<"Failed To Set Privileges";
    	}
    	ExitWindowsEx(EWX_SHUTDOWN | EWX_POWEROFF, NULL);
    	if (GetLastError() != ERROR_SUCCESS)
    	{
    		cout<<"Failed to shut down computer using forced attributes.";
    	}
    return 0;
    }
    The attributes are not forced, but you can add EWX_FORCE constant to force the shutdown of applications.
    Last edited by Xei; 05-12-2002 at 10:42 AM.

  3. #3
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    Yep, see you are using the ExitWindowsEx() function
    "There are three kinds of people in the world...
    Those that can count and those that can't."

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