Block Control+Alt+Delete

Question

I am doing an Online Quiz project in C#. The test client is a Windows Desktop Application running on Windows XP. I need to block the control+alt+d

Answer 1

I wonder if you could install a filter on the keyboard driver?

I know on USB interfaces, you can install an upper or lower filter to the USB data to intercept it as it arrives on the computer, and perhaps a similar approach could be taken. Essentially, you would modify the key combinations coming from the keyboard as long as your testing application is running.

I did find an 'UpperFilters' registry key defined for my keyboard...

This USB sniffer comes with source code that implement a filter. It may be usable in the context of a keyboard sniffer / modifying filter. (Download link)