Question

1st time using an EventListener for a KeyboardEvent and I cant make it work:

Here is the code:

stage.addEventListener(KeyboardEvent.KEY_DOWN, Cal);

function Cal(event:KeyboardEvent):void 
{
    if (event.keyCode == Keyboard.ENTER) {
        Calco();
    }
}

The errors I get are:

Scene 1, Layer ‘Actions’, Frame 1, Line 95 1136: Incorrect number of arguments. Expected 1.

line 94 is the if line and 95 the Calco thing…
I dont get where is the problem. I have another sample of code that works fine and I used it as an example.

Answer 1

Some thoughts… and working example:

import flash.events.KeyboardEvent;
import flash.ui.Keyboard;


// #1 - use the proper variables / function  names, upper and lower cases:
// Classes: Xxxxxx
// function : xxxxxx, xxxXxxxx
// variables : xxxxXxxx, xxxxx
// constants : XXXXXX
// #2 - use the readable function name, no shotcuts... ( just few advices );

stage.addEventListener(KeyboardEvent.KEY_DOWN, handleKeyboardDown);

function handleKeyboardDown(    e   :KeyboardEvent):void
{
    // #3 - for keyboard events use switch instead...

    // The error which was here is that the variable which parsed is named 'event' and you are using 'e',
    // you need to use the same name as it being initialized
    switch(e)
    {
        case Keyboard.ENTER :

            // the error for your 'Calco()' function, is because
            // function Calco (value.... expects for an variable.
                    // in this case this function does not required any variables
            calculate();
            break;
    }
}

function calculate():void
{
    trace (this);
}