how to disable ctrl+alt+del and alt+tab in c#?

I want to program a application for user login in windows.Now I has some
question about disable the system hotkey(c+a+d,alt+tab,win key.etc.) and
limit the mouse cursor in winform
How can I do it?

thanks!

[Scott Allen]

Hi zjflyer:

You don't want to try to disable ctrl+alt+del from a user application.
The operating system takes this combination of keys very seriously
since it will usually involve a user entering thier password, and you
would not want just any software on the computer grabbing user
passwords.

If you want to provide a cutomized logon procedure, you'll want to
write a GINA (Graphical Identification and Authentication) DLL, which
you can find more about with any google search.

--
Scott
http://www.OdeToCode.com
On Sun, 26 Sep 2004 13:59:15 +0800, <zj*****@hotmail.com> wrote:

I want to program a application for user login in windows.Now I has some
question about disable the system hotkey(c+a+d,alt+tab,win key.etc.) and
limit the mouse cursor in winform
How can I do it?

thanks!

No,there I didnt want to instead the windows logon.
I just want users user their account and password to login and then log the
login account and password to my database.So I want to know how to disable
the ctrl+alt+del and lock mouse when they login

thanks for your help!

"Scott Allen" <bitmask@[nospam].fred.net> ????
news:kn********************************@4ax.com...

Hi zjflyer:

You don't want to try to disable ctrl+alt+del from a user application.
The operating system takes this combination of keys very seriously
since it will usually involve a user entering thier password, and you
would not want just any software on the computer grabbing user
passwords.

If you want to provide a cutomized logon procedure, you'll want to
write a GINA (Graphical Identification and Authentication) DLL, which
you can find more about with any google search.

--
Scott
http://www.OdeToCode.com
On Sun, 26 Sep 2004 13:59:15 +0800, <zj*****@hotmail.com> wrote:

I want to program a application for user login in windows.Now I has some
question about disable the system hotkey(c+a+d,alt+tab,win key.etc.) and
limit the mouse cursor in winform
How can I do it?

thanks!

[Michael A. Covington]

<zj*****@hotmail.com> wrote in message
news:ep**************@TK2MSFTNGP10.phx.gbl...

I want to program a application for user login in windows.

Any operating system in which this can be done is a SERIOUS security risk.
Windows is designed to prevent it. Only Windows can log you in.

[Heinz Dittrich]

look at: http://www.dwinlock.kassl.de
there you will find an easy to use tool called dWinlock to disable
every key combination you want including Ctrl+Alt+Del

Regards
Dittrich

<zj*****@hotmail.com> wrote in message news:<ep**************@TK2MSFTNGP10.phx.gbl>...

I want to program a application for user login in windows.Now I has some
question about disable the system hotkey(c+a+d,alt+tab,win key.etc.) and
limit the mouse cursor in winform
How can I do it?

thanks!