Is it possible to catch CTRL+ALT+DEL combination and/or prevent user to
close application from Task Manager?
Thanks.

If we could just answer all questions in this short fashion...<g>

--
Carsten Thomsen
http://www.apress.com/book/bookDisplay.html?bID=105
"Mattias Sjögren" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...
>
> >Is it possible to catch CTRL+ALT+DEL combination and/or prevent user to
> >close application from Task Manager?
>
> No
>
>
>
> Mattias
>
> --
> Mattias Sjögren [MVP] mattias @ mvps.org
> http://www.msjogren.net/dotnet/
> Please reply only to the newsgroup.

The OS catches CTRL+ALT+DEL combination, and it will never report it to any
applications. This is intentional for security reason, so that no
application can fake a login screen.

So the answer is NO.

"CT" <(E-Mail Removed)> wrote in message
news:eJIO%(E-Mail Removed)...
> If we could just answer all questions in this short fashion...<g>
>
> --
> Carsten Thomsen
> http://www.apress.com/book/bookDisplay.html?bID=105
> "Mattias Sjögren" <(E-Mail Removed)> wrote in message
> news:(E-Mail Removed)...
> >
> > >Is it possible to catch CTRL+ALT+DEL combination and/or prevent user to
> > >close application from Task Manager?
> >
> > No
> >
> >
> >
> > Mattias
> >
> > --
> > Mattias Sjögren [MVP] mattias @ mvps.org
> > http://www.msjogren.net/dotnet/
> > Please reply only to the newsgroup.
>
>

I think you completely missed the point

--
Carsten Thomsen
http://www.apress.com/book/bookDisplay.html?bID=105
"Conrad Zhang" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...
> The OS catches CTRL+ALT+DEL combination, and it will never report it to
any
> applications. This is intentional for security reason, so that no
> application can fake a login screen.
>
> So the answer is NO.
>
> "CT" <(E-Mail Removed)> wrote in message
> news:eJIO%(E-Mail Removed)...
> > If we could just answer all questions in this short fashion...<g>
> >
> > --
> > Carsten Thomsen
> > http://www.apress.com/book/bookDisplay.html?bID=105
> > "Mattias Sjögren" <(E-Mail Removed)> wrote in message
> > news:(E-Mail Removed)...
> > >
> > > >Is it possible to catch CTRL+ALT+DEL combination and/or prevent user
to
> > > >close application from Task Manager?
> > >
> > > No
> > >
> > >
> > >
> > > Mattias
> > >
> > > --
> > > Mattias Sjögren [MVP] mattias @ mvps.org
> > > http://www.msjogren.net/dotnet/
> > > Please reply only to the newsgroup.
> >
> >
>
>

"Anatoly" <(E-Mail Removed)> wrote in message news:<(E-Mail Removed)>...
> Is it possible to catch CTRL+ALT+DEL combination and/or prevent user to
> close application from Task Manager?
> Thanks.

http://www.sysinternals.com/ntw2k/source/ctrl2cap.shtml

I havn't tested it for Ctrl+Alt+Del, but:
Windows provides a hooking mechanism for computer based training. Basically,
you register a callback wtih windows that recieves messages when certain
events occur. In this case, you need to register a CBT Hook and monitor for
the HCBT_SYSCOMMAND message. HCBT_SYSCOMMAND is defined as:
"A system command is about to be carried out. This allows a CBT application
to prevent task switching by means of hot keys." (Platform SDK)

Look up SetWindowsHookEx and CBTProc in the platform SDK. You will have to
do some interop, probably have to write an unmanaged Dll that contains the
hook function, but i think the capacity is there.

"Gawie Malherbe" <(E-Mail Removed)> wrote in message
news:3f4c70f3$0$(E-Mail Removed)...
> I disagree. Being in the training software industry, I've seen mainstream
> testing environments where the application does exactly what was asked
> initially, blocking ctrl+alt+del and blocking the application from being
> closed by the task manager. As a matter of fact, the whole task manager is
> disabled.
>
> Don't know how...
>
> G
>
> > I think you completely missed the point
>
> > > So the answer is NO.
>
>