appevents IsWindowsShutdown property
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Applies to
acAppEvents component.  

Declaration
property IsWindowsShutdown: Boolean; // read-only!  

Description
The IsWindowsShutdown property determines whether Windows is about to be shutdowned or restarted. You can use this property in some particular situations to determinate whether Windows is about to be shutdown and take some specific actions in this case (for example, see below how we can prevent to show the exit confirmation dialog in OnCloseQuery event handler of main form).  

Example
procedure TMainForm.FormCloseQuery(Sender: TObject; var CanClose: Boolean);  
begin  
  // this will prevent to show the confirmation dialog on Windows exit  
  if not acAppEvents1.IsWindowsShutdown then  
    CanClose := ShowInfoBox('Are you sure want to close this application?''Confirm Exit'0, ibYesNo) <> ID_NO;  
end;  

See also
OnWindowsShutdown event.