Question

public class KeyEvent {
        private Keys[] keys = null;
        public delegate void eventmethod();
        private eventmethod em;
        private object[] args;
        private bool thrown = false;
        public bool repeat = true;

        public bool isKey(Keys key) {
            if (keys == null) return true;
            foreach (Keys k in keys) {
                if (key == k) return true;
            }
            return false;
        }

        public void ThrowEvent() {
            if (!repeat && thrown) return;
            em.DynamicInvoke(args);
            this.thrown = true;
        }

        public KeyEvent(eventmethod D) {
            em = D;
        }
        public KeyEvent(Keys[] keys, eventmethod D) {
            this.keys = keys;
            this.KeyEvent(D);
        }
        public KeyEvent(eventmethod D, object[] args) {
            this.args = args;
            this.KeyEvent(D);
        }
        public KeyEvent(Keys[] keys, eventmethod D, object[] args) {
            this.args = args;
            this.KeyEvent(keys, D);
        }
    }

Hey, guys; this class won’t compile. The error I’m getting is:

‘BLBGameBase.KeyEvent’ does not
contain a definition for ‘KeyEvent’
and no extension method ‘KeyEvent’
accepting a first argument of type
‘BLBGameBase.KeyEvent’ could be found
(are you missing a using directive or
an assembly reference?)

Anyway, this error is thrown for the three lines that call “this.KeyEvent(D)” or similar.
I don’t understand the error, as it argues that no method accepts a first argument of a “KeyEvent”, but I’m not trying to call a method with a KeyEvent… Thank you.

Answer 1

To call one constructor from another, use this syntax:

public KeyEvent(Keys[] keys, eventmethod D)
    : this(D)
{
    this.keys = keys;
}

As your code stands, it is trying to call a regular method (non-constructor) called KeyEvent.