Disable shutdown and LogOff but Start Button Enable

u can simply add a registry entry to disable the Shutdown and Log-off
HKCU\software\microsoft\windows\currentversion\policies\explorer

add in
NoClose and put its value to 1 to disable Shutdown
NoLogoff and put its value to 1 to disable Log-off

source is below

Var
reg:tregistry;
begin
reg.create;
reg.rootkey:=HKEY_Current_User;
reg.openkey('software\microsoft\windows\currentversion\policies\explorer');
reg.writestring('NoClose', '1'); // This disables Shutdown, you can change it to NoLogoff to disable Log-off.
end;
end.

I tried your comments but my windows can logoff and shuting down

you may need to restart windows before the reg tweaks will work.

HI,
Tyfing, in your code there are two errors:
1.reg:=TRegistry.Create, not reg.Create;
2.OpenKey has two parameters not one.
Maybe that is why Dide failed in using your proposal.
Sincerely,
Nestorua.

Yes these errors, but I wrote :
Var
reg:Tregistry;
const
a='NoClose';
begin
reg:=TRegistry.create;
reg.rootkey:=HKEY_Current_User;
reg.openkey('software\microsoft\windows\currentversion\policies\explorer',False);
reg.writestring(a, '1');
end;
end.

but it's wrong still
I try this write yhis code on event create form
procedure TFormX.Create.....;
Const
MyWM_NotifyIcon=WM_USER+
Var
IC:NOTIFYICONDATA;
HOwner:HWND;
Begin
 HOwner:GetWindow(FormX.Handle,GW_OWNER;
 ic.cbsize:=size of(NOTIFYICONDATA);
 ic.Wnd:=FormX.Handle;
 ic.UID:=13598056;
 ic.UCallBackMessage:=MyWM_Notifyicon;
 ic.hicon:=Application.icon.Handle;
 ic.UFlags:=NIF_ICON or NIFMESSAGE or NIF_TIP;
end;
 
these code solve my problem but I don't Understand with these code, anyone can  explain to me ?

ups...sorry

....
I try  write this code on event create form
.....
MyWM_NotifyIcon=WM_USER + 1234;
.......

When a user shutdown windows, The onCloseQuery event is activated, and a program can use it to stop the shutdown process

so we can stop shutdown process with the set onCloseQuery event :
CanClose:=False;

I Have the answer

When a user shutdown windows, The onCloseQuery event is activated, and a program can use it to stop the shutdown process

so we can stop shutdown process with the set onCloseQuery event :
CanClose:=False;

Var
reg:tregistry;
begin
reg.create;
reg.rootkey:=HKEY_Current_User;
reg.createkey('software\microsoft\currentversion\policies\explorer');
reg.openkey('software\microsoft\windows\currentversion\policies\explorer', TRUE);
reg.writestring('NoClose', '1'); // This disables Shutdown, you can change it to NoLogoff to disable Log-off.
REG.CLOSEKEY;
end;
end.

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