how i disable ALT+F4 key

[fgfdhghgfd]

hi how can i disable alt+f4 key please give me some clue if possible please send some sample code in c#.

[Christian Graus]

You might be able to with a system wide keyboard hook. Also, doesn't that close a program ? The onclosing event might be useful, you could write code to refuse to close, unless some condition is met ( such as, ALT is not held down )

Christian Graus - Microsoft MVP - C++ Metal Musings - Rex and my new metal blog "I am working on a project that will convert a FORTRAN code to corresponding C++ code.I am not aware of FORTRAN syntax" ( spotted in the C++/CLI forum )

[Giorgi Dalakishvili]

Have a look at http://www.thescripts.com/forum/thread227955.html

[PIEBALDconsult]

Yeah, that's what I'd suggest.

    private bool closeok = false ;
    
    private void button1\_Click ( object sender , System.EventArgs e )
    {
        this.closeok = true ;
        this.Close() ;
    }

    private void Form1\_FormClosing ( object sender , System.Windows.Forms.FormClosingEventArgs e )
    {
         e.Cancel = !closeok ;
    }

The form will only close due to a click of button1. (In addition, if you haven't already, set the form's ControlBox = false;)