Detect Windows shutdown?

[mahris 0]

No need to trigger WM_QUERYENDSESSION yourself, Delphi already does it in Forms.pas:

procedure TCustomForm.WMQueryEndSession(var Message: TWMQueryEndSession);
begin
  Message.Result := Integer(CloseQuery);
end;

So, do your actions in standard OnCloseQuery.

 

Note. In my Windows 10, on shutdown I receive OnCloseQuery. but not OnClose (WM_CLOSE).

Edited May 30, 2022 by mahris

[Ian Branch 127]

Hi Mahris,

Yes, since I started this I discovered and no use OnCloseQuery.

Thank you for the follow up.

 

Ian