how to disable special keys in windows application using c#

Question

i want to disable ctrl+alt+delete, windows, shift, ctrl, alt, delete, esc,tab,alt+tab, alt+f4 keys in windows application using c#

---

<Kabilan>Learning C#</Kabilan>

Answer 1

Take a look at this tutorial. This will only work when your form is in focus. If you want to intercept them even when your form is minimized, you'll need to get a bit more fancy.

Answer 2

hi,

r u working in WPF or windows application. if it is WPF then u can use the following override code and customize according to ur requirements

 protected override void OnPreviewKeyDown(KeyEventArgs e)
        {
            if (Keyboard.Modifiers == ModifierKeys.Alt && e.SystemKey == Key.F4 ||
               Keyboard.Modifiers == ModifierKeys.Control && e.SystemKey == Key.Escape)
            {
                e.Handled = true;
            }
            else
            {
                base.OnPreviewKeyDown(e);
            }
            
        }

hope u get the solution

regards

Jagan

Answer 3

Thank you jagan

---

<Kabilan>Learning C#</Kabilan>

Answer 4

Hi,

as a user, I wouldn't want to use an application which tries to do that to my computer! You are trying to disable important functions of the operating system, and no honest program should do that...

---

http://wpfglue.wordpress.com

Answer 5

But it handles only once... i need to handle this every time user press these keys... help me

---

<Kabilan>Learning C#</Kabilan>