C # masking Alt+f4, resolving alt+f4 when closing a form when the dialog box no, the thread does not exit the issue

Source: Internet
Author: User

//1. Set the form's property keyprieview to True//when the KeyPreview property is true, it can respond to keyboard events v//2. Add the following code to the form KeyDown eventPrivate voidForm1_keydown (Objectsender, KeyEventArgs e) {                        if(E.keycode = = keys.f4) && (e.alt==true))//Shielded Alt+f4{e.handled=true; }     }//e.handled Property: Gets or sets a value that indicates whether the event has been processed, that is: Handled is set to//True, then the KeyPress event will be canceled, which means that you have pressed a button, but the system does not process//, is equal to NOT press!!! 

C # masking Alt+f4, resolving alt+f4 when closing a form when the dialog box no, the thread does not exit the issue

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