t_t_o_oさんは書きました：
functionの中で、別のfunctionで定義したイベントリスナーをremoveしたいのですが、うまくいきません。
...[中略]...

var mc001:MovieClip = new MovieClip();
var mc002:MovieClip;
mc001.graphics.beginFill(0x0000FF);
mc001.graphics.drawRect(10, 10, 100, 100);
addChild(mc001);

aaa(mc001);
// bbb(mc002,1);

function aaa(mcName:MovieClip){
	mcName.addEventListener(MouseEvent.MOUSE_OVER, btnMoHandler);
	// mcName.addEventListener(MouseEvent.MOUSE_OUT, btnRoHandler);
}

function bbb(mcName:MovieClip,type:Number){
	if (type==1) {
	/*
		mcName.scaleX=2;
		mcName.scaleY=2;
		mcName.gotoAndPlay(2);
		mcName.addEventListener(MouseEvent.CLICK,btnClickHandler);
		*/
		mc001.removeEventListener(MouseEvent.MOUSE_OVER,btnMoHandler);
		/*
		mc001.removeEventListener(MouseEvent.MOUSE_OUT,btnRoHandler);
	}else{
		mcName.scaleX=2;
		mcName.scaleY=2;
		mcName.gotoAndPlay(2);
		mcName.addEventListener(MouseEvent.CLICK,btnClickHandler);
	*/
	}
}

function btnMoHandler(eventObject:MouseEvent):void {
	trace(eventObject);
	bbb(mc002,1);
}