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Is there any way to show my application message or any text on Cntrl+alt+del screen.....
Posted 27-Mar-13 7:42am
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Solution 2

Sergey is totally right. You still have two options to display some information on logon screen:
1) Use registry to add logon message. See:[^]
2) Use logon wallpaper:[^]

I found a really interesting thing for you:[^]
Sergey Alexandrovich Kryukov 27-Mar-13 14:45pm
Good suggestion, my 5.
OP really needs to tell us the ultimate goals.
Zoltán Zörgő 27-Mar-13 14:47pm
Thank you.
Yes, that would be helpful for us and hem too :)
SNI 28-Mar-13 2:02am
Thanks for all your efforts. But what I am trying is that whenever my application in User Mode received any mesaage and screen is locked then I want to show some notification on cntrl+alt+del screen.
Zoltán Zörgő 28-Mar-13 3:21am
See update!
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Solution 1

I don't think you can intercept this keyboard input at the level of any user-mode code. I don't know if it can be done in Ring 0 code, but it means the level of the kernel-mode driver or something like that.

This key combination is hidden by the OS from the user-code processes, for apparent safety reasons. If some code blocks Ctrl+Alt+Del, only a reset or power button can help, but its operation can also be blocked in system settings. What else to do then? Only removing the power… :-)


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