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Thread: Passing Additional Parameters with Events

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  1. #1
    Senior Member
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    Jan 2006
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    Passing Additional Parameters with Events

    What's the best way to pass additional parameters with.. let's say.. a mouseclick?

    So, for example... the user clicks on a button and I want to pass the value 10 along with it.. so, whenever the buttonClicked function is called it has that value to use.

    I know that you can create custom events by making a subclass of the Event class. And I know that you can dispatch the custom events to where you can access additional parameters by doing something like:
    PHP Code:
    dispatchEvent(new CustomEvent("action"10)); 
    CustomEvent's constructor would look something like:
    PHP Code:
    public function CustomEvent(_type:String_val:Number);
       
    super(type);
       
    val _val;

    And later on you can access the val by doing something like:
    PHP Code:
    function buttonClicked(evt:CustomEvent) {
       
    trace(evt.val);

    But in order to do that, you'd have to do something like:
    PHP Code:
    button.addEventListener("buttonClick"buttonClicked);
    dipatchEvent(new CustomEvent("buttonClick"10)); 
    You have to dispatch the event yourself in order to pass that extra parameter.

    So, how could I pass parameters when the user actually does click on the button?

    I've thought about just adding a regular MouseEvent.MOUSE_DOWN and dispatching the event from that function... but I lose the values that I need to pass through.

    I've also thought about creating a local listener function.. something like
    PHP Code:
    var val:uint 10;
    button.addEventListener(MouseEvent.MOUSE_DOWN, function buttonClicked(e:Event):void dispatchEvent("buttonClick"val); }); 
    Would that work, though? I can't test it out right now. Only brainstorming.

    Any help is appreciated.
    Last edited by AfternoonDelite; 07-10-2007 at 01:25 PM.

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