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Lock Ctrl+Alt+Del in WinNT 4.0

Posted on 1998-08-26
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Last Modified: 2010-04-04
How can I lock the key combination Ctrl+Alt+Del and Alt+Tab in my Delphi-Application for WinNT 4.0. The API function SystemParameterInfo(SPI_Screensaverrunning....) ist only working in Windows 95.
Who can help me ?
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Question by:Pele
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d003303 earned 60 total points
ID: 1337807
Winlogon.exe is the first UI process that is started and reacts on Ctrl+Alt+Del. Because it is the first process, it sees all key events first. So to hook up before that process you need a kernel-mode driver. No other chance. Take a look at

http://www.sysinternals.com/ctrl2cap.htm

for an example. Unfortunately, the sources are in C and you need the MS DDK to compile them.
Note that you are going very deep into the OS Kernel with that, this is not very suitable if it isn't absolutely necessary.
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