Hi
What events are triggered when a user logs off from windows 2000/xp etc?
I have tried a test using the events below, but none of them seem to get triggered.
Thanks
Pete
procedure TForm1.FormClose(Sender: TObject; var Action: TCloseAction);
begin
debugMSG ('formclose');
showmessage('formclose');
end;
procedure TForm1.FormDestroy(Sender:
begin
debugMSG ('formdestroy');
showmessage('formdestroy')
end;
procedure TForm1.WMENDSESSION(var Msg: TMessage);
begin
debugMSG ('wmendsession');
showmessage('wmendsession'
end;
procedure TForm1.WMQUERYENDSESSION(v
begin
debugMSG ('WMQUERYENDSESSION');
showmessage('WMQUERYENDSES
end;
procedure TForm1.FormCloseQuery(Send
begin
debugMSG ('FormCloseQuery');
end;
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you do get the endsession
trap it by
type TForm1 = class(TForm)
*************
procedure WndProc(var Msg: TMessage); override;
private
********
public
*******
end;
procedure TForm1.WndProc(var Msg: TMessage);
//traps incoming messages to check for close events
begin
if Msg.Msg=WM_QueryEndSession
begin
>>>>Dosomethinghere
inherited WndProc(Msg);
end
else
inherited WndProc(Msg);
end;
Hi
Thank you, I tried your suggestion with a small demo project, but that event doesnt seem to get triggered either :( I'm testing it on a win 2000 client pc connected to a windows 2000 server based network. The pc I'm testing it on does not have the IDE installed. I also noticed that it 'logs off' very quickly, not sure if thats a network setting, but shall investigate.
My code is:
unit Unit1;
interface
uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs;
type
TForm1 = class(TForm)
private
procedure OnLogOff(var Msg : TMessage); message WM_QUERYENDSESSION;
{ Private declarations }
public
{ Public declarations }
end;
var
Form1: TForm1;
implementation
{$R *.dfm}
procedure debugMSG(msg:string);
const
FileName = 'c:\closeEvents.txt';
var
F: TextFile;
begin
AssignFile(f,FileName);
if FileExists(FileName) then Append(f)
else
Rewrite(f);
try writeln(f,DateTimeToStr(No
except windows.Beep(200,50);
end;
// ShowMessage(DateTimeToStr(
CloseFile(f);
end;
procedure TForm1.OnLogOff(var Msg: TMessage);
begin
debugMSG ('OnLogOff');
ShowMessage('OnLogOff');
Msg.Result := 0; // This will stop the log off
end;
end.
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Answer for Membership
by: atul_parmarPosted on 2006-06-26 at 00:09:09ID: 16981790
Hi,
When user logs off you will receive WM_QUERYENDSESSION message. But I think you can not cought it while IDE is running (the reason might be that the IDE will receive the same message and terminate its process or debugger). To test it run the application outside the IDE.
the message should look like
procedure OnLogOff(var Msg : TMessage); message WM_QUERYENDSESSION;
procedure TForm1.OnLogOff(var Msg: TMessage);
begin
ShowMessage('End Session');
Msg.Result := 0; // This will stop the log off
end;