CODEWITHSUNDEEP
c#keyboard-hook
Suriyan Suresh
Suriyan Suresh

Reputation: 3024

How do I trap windows key, alt+tab, ctrl+alt+delete in C#?

How do I trap Windows key, Alt+Tab, and Ctrl+Alt+Delete in a Windows application using C#?

Upvotes: 3

Views: 10525

Answers (5)

AyrA
AyrA

Reputation: 11

Some Remote Management Software and Virtual Machines do this. If you press [CTRL]+[ALT]+[DEL] the specific Windows Dialog will still opens, but the Application also displays, that you have pressed [CTRL]+[ALT]+[DEL] and probably wanted it t become effective on the Target Machine and not your host. It seams rather easy to capture these keys, but cancelling the Event may be harder.

Upvotes: 1

Erich Mirabal
Erich Mirabal

Reputation: 10038

As Jan stated, you can't capture CTRL-ALT-DEL without writing your own GINA.

For the Windows or ALT-TAB keys, you can look at these for help:

Capturing Keystrokes without Focus (SO near-duplicate)

How To Set A Windows Hook

Hooks (low-level, but will explain what you need for the P/Invoke)

Upvotes: 4

Jan Bannister
Jan Bannister

Reputation: 4999

You can capture Ctrl-Alt-Delete. But you need to implement your own GINA dll which is loaded by Winlogon.

You'll need to code this up in C or C++ as it needs to be a native DLL.

Upvotes: 5

Shoban
Shoban

Reputation: 23016

AFAIK Ctrl + Alt + Delete cannot be captured using an application.

See this question to get some more idea: How to trap the keyboard strokes on a c# win forms application (CTRl + alt +Del)

Upvotes: 1

unwind
unwind

Reputation: 399753

Almost by definition, you can't "trap" ctrl-alt-delete.

Upvotes: 1

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