Restrict Keydown Events

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.NET3.5

Hi All,

I have used key down event to fix shortcut for some events.

Actually I have Fixed code for F4. But when I press Ctrl+F4,Shift +F4 that time
also that F4 code gets executed.

How to restrict this?

Thanks &Regards ,
Pal

Posted 18-May-12 19:44pm

palraj001

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OriginalGriff 19-May-12 2:38am

This is not a good question - we cannot work out from that little what you are trying to do.
Remember that we can't see your screen, access your HDD, or read your mind.
Possibly, showing the code fragment which handles the KeyDown event would help...
Use the "Improve question" widget to edit your question and provide better information.

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Sunny_Kumar_ · Answer 1 · 2012-05-18T20:42:00

Hi palraj001,

I think this may help you:

C#

private void textBox1_KeyDown(object sender, KeyEventArgs e)
        {

            if (e.KeyCode == Keys.F4 || (e.KeyCode == Keys.F4 && Control.ModifierKeys == Keys.Control) || (e.KeyCode == Keys.F4 && Control.ModifierKeys == Keys.Alt) || (e.KeyCode == Keys.F4 && Control.ModifierKeys == Keys.Control && Control.ModifierKeys == Keys.Alt))
            {
                //doNothing();
            }
            else
            {
                //DoStuff();
            }

        }

The example above restricts F4 key in every combination with modifiers.

Happy Coding :)