knockout (BevelFilter.knockout property) -- Version 8

Applies a knockout effect (true), which effectively makes the object's fill transparent and reveals the background color of the document. The default value is false (no knockout).

Example

The following example changes the knockout property on the existing MovieClip instance (rect) when a user clicks it:

import flash.filters.BevelFilter;

var rect:MovieClip = createBevelRectangle("BevelKnockout");
rect.onRelease = function() {
    var filter:BevelFilter = this.filters[0];
    filter.knockout = true;
    this.filters = new Array(filter);
}

function createBevelRectangle(name:String):MovieClip {
    var w:Number = 100;
    var h:Number = 100;
    var bgColor:Number = 0x00CC00;

    var rect:MovieClip = this.createEmptyMovieClip(name, this.getNextHighestDepth());
    rect.beginFill(bgColor);
    rect.lineTo(w, 0);
    rect.lineTo(w, h);
    rect.lineTo(0, h);
    rect.lineTo(0, 0);
    rect._x = 20;
    rect._y = 20;

    var filter:BevelFilter = new BevelFilter(5, 45, 0xFFFF00, .8, 0x0000FF, .8, 20, 20, 1, 3, "inner", false);
    rect.filters = new Array(filter);
    return rect;
}