How to disable Windows OS in C# Application?

Question

Please help me to disable Windows OS in C# Application. Eg: disable Ctrl + Alt + Del disable Windows key (in the middle of Ctrl and Alt at the left side) Thanks.

c_wiley · Answer

There is a way to do it but I would make a registry back up first this is totally untested and with out warranty and all that stuff. But if you drill down to: HKEY_USER S-1-5-21-1960408961-15639835344-1060284298-1004 SOFTWARE MICROSOFT CURRENTVERSION POLICIES SYSTEM Again I am not sure if key ‘S-1-5-21-1960408961-15639835344-1060284298-1004’ is common to all systems. Here you will find a key called DisableTaskmgr Edit this key and change the value from a zero to a 1 Exit Regedit and you will find when you attempt the infamious Ctrl+Alt+Delete key combination a messagebox will popup advising: Task Manager hse been disabled by your administrator. Just be careful please

asic · Answer

hi i think that u may need to use API functions................they have some abilities to deal with the kernel of the os i am not sure but try to search in that

Andrei Arugay · Answer

You can't disable it but you can control what keys has been pressed in the keyboard while your application is running.

thanhpham · Answer

I have found a soft which make disable those key but the author of soft don't give the source code. he only explain the way he does. That is combination of hook and subclassing. If you have researched this mechanisim plese help me. Thanks.

supersonic_skymaster · Answer

I might be wrong but that's what I heard.

supersonic_skymaster · Answer

This is not possible because it is a fundamental event triggered from the kernel. The only way would be to intercept the key press before the kernel which I don't think is possible.