DELETEKEY (Key.DELETEKEY プロパティ)

this.createEmptyMovieClip("canvas_mc", this.getNextHighestDepth());
var mouseListener: Object = new Object();
mouseListener.onMouseDown = function() {
    this.drawing = true;
    canvas_mc.moveTo(_xmouse, _ymouse);
    canvas_mc.lineStyle(3, 0x99CC00, 100);
};
mouseListener.onMouseUp = function() {
    this.drawing = false;
};
mouseListener.onMouseMove = function() {
    if (this.drawing) {
    canvas_mc.lineTo(_xmouse, _ymouse);
    }
    updateAfterEvent();
};
Mouse.addListener(mouseListener);
//
var keyListener: Object = new Object();
keyListener.onKeyDown = function() {
    if (Key.isDown(Key.DELETEKEY) || Key.isDown(Key.BACKSPACE)) {
    canvas_mc.clear();
    }
};
Key.addListener(keyListener);