MFC silent executable running from system account not recieveing WM_QUERYENDSESSION message ?? [modified]

[Covean]

From MSDN: "Console applications receive shutdown notifications in their handler routines. To register a console handler, use the SetConsoleCtrlHandler function. Service applications receive shutdown notifications in their handler routines. To register a service control handler, use the RegisterServiceCtrlHandlerEx function." Maybe that helps.

[Roger Stoltz]

Kushagra Tiwari wrote:

I have made an MFC application with invisible window and invisible in Applications tab of taskmanager .... I have made one instance of this executable to run in 'SYSTEM' account

Does this mean that you have created a service?

Kushagra Tiwari wrote:

how to abort scheduled shutdown in Windows from an application running in system account

Are you certain that you really want to do this even if it's possible? What do you mean by 'scheduled'? Personally I find it suspicious that you have created an application that runs "invisible" from user perspective that aims to block the system from being brought down. I would consider it to be a very anti-social application that I wouldn't want running on any of my machines. However, if an application calls ::ExitWindowsEx() with the EWK_FORCE parameter, WM_QUERYENDSESSION will not be sent - all processes will be terminated and possibly with data lost. How do you distinguish from a 'scheduled' shutdown and one triggered by a user in your message handler or callback? I guess the user won't be able to bring the system down either.... What if your application runs on a machine with UPS; the power is lost and the UPS service wants to bring the system down safely? Will you block it if possible? I guess my question really is "what are to trying to accomplish and why"? There may be a better solution.

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