As3.0 鼠标滚轮控制文本滚动代码

bar.addEventListener(MouseEvent.MOUSE_WHEEL, mouseWheel);

if (e.delta < 0) {
//如果是向下滚动
moveScroll(bar[type.attribute] + bar[type.type] / 2 + _scrollNum);
}else {
//如果向上滚动
moveScroll(bar[type.attribute] + bar[type.type] / 2 - _scrollNum);
}